Interoperability Between GSM and LTE Feature Parameter Description

9/26/2016

Interoperability Between GSM and LTE Feature Parameter Description

GSM BSS GBSS17.1

Interoperability Between GSM and LTE Feature Parameter Description Issue

02

Date

20151031

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2015. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.

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Website:

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Contents 1 About This Document 1.1 Scope 1.2 Intended Audience 1.3 Change History

2 Overview 2.1 Introduction 2.2 NEs Supporting the Feature

3 Related Concepts 3.1 SI2quater 3.2 Measurement of Neighboring LTE Cells 3.3 Reporting of Neighboring LTE Cell Information

4 InterRAT Cell Reselection Between GSM and LTE 4.1 Overview 4.2 Cell Reselection from LTE to GSM 4.2.1 LTEtoGSM Cell Reselection 4.2.2 LTEtoGSM eNACC 4.3 Cell Reselection from GSM to LTE 4.4 Cell Reselection Based on Cell Priority 4.5 eNC2 Between GSM and LTE 4.5.1 ServiceBased Cell Reselection Algorithm 4.5.2 QualityBased Cell Reselection Algorithm 4.5.3 LoadBased Cell Reselection Algorithm 4.5.4 CoverageBased Cell Reselection Algorithm 4.5.5 RAT PriorityBased Cell Reselection Algorithm 4.5.6 Neighboring Cell PriorityBased Cell Reselection Algorithm

5 GSM/LTE InterRAT PS Handover 5.1 GSMtoLTE PS Handover 5.1.1 Overview 5.1.2 Procedure 5.1.3 Fast PS Handover Between GSM and LTE 5.1.4 ServiceBased PS Handover 5.1.5 QualityBased PS Handover 5.1.6 LoadBased PS Handover 5.1.7 CoverageBased PS Handover 5.1.8 RAT PriorityBased PS Handover 5.1.9 Neighboring Cell PriorityBased PS Handover 5.2 PS Handover from LTE to GSM 5.2.1 Overview 5.2.2 Procedure

6 SRVCC 6.1 Overview 6.2 Procedure

7 Related Features 8 Network Impact 8.1 Cell Reselection Between GSM and LTE 8.1.1 System Capacity 8.1.2 Network Performance 8.2 PS Handover Between GSM and LTE Based on Coverage 8.2.1 System Capacity 8.2.2 Network Performance http://localhost:7890/pages/GEE1231L/Draft%20A/GEE1231L/Draft%20A/resources/enus_bookmap_0001793237.html?ft=0&fe=10&hib=3.5.5&id=ENUS_BO…

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8.3 PS Handover Between GSM and LTE Based on Quality 8.3.1 System Capacity 8.3.2 Network Performance 8.4 PS Handover Between GSM and LTE Based on Cell Load 8.4.1 System Capacity 8.4.2 Network Performance 8.5 PS Handover Between GSM and LTE Based on Mode Priority 8.5.1 System Capacity 8.5.2 Network Performance 8.6 GSM/LTE Service Based PS Handover 8.6.1 System Capacity 8.6.2 Network Performance 8.7 eNC2 Between GSM and LTE 8.7.1 System Capacity 8.7.2 Network Performance 8.8 eNACC Between GSM and LTE 8.8.1 System Capacity 8.8.2 Network Performance 8.9 SRVCC 8.9.1 System Capacity 8.9.2 Network Performance 8.10 Multi Technology Neighbour Cell Based Handover 8.10.1 System Capacity 8.10.2 Network Performance

9 Engineering Guidelines 9.1 When to Use Interoperability Between GSM and LTE 9.1.1 Cell Reselection Between GSM and LTE 9.1.2 PS Handover Between GSM and LTE Based on Coverage 9.1.3 PS Handover Between GSM and LTE Based on Quality 9.1.4 PS Handover Between GSM and LTE Based on Cell Load 9.1.5 PS Handover Between GSM and LTE Based on Mode Priority 9.1.6 GSM/LTE Service Based PS Handover 9.1.7 eNC2 Between GSM and LTE 9.1.8 eNACC Between GSM and LTE 9.1.9 SRVCC 9.1.10 Multi Technology Neighbour Cell Based Handover 9.2 Required Information 9.3 Network Planning 9.4 Overall Deployment Procedure 9.5 Deploying Cell Reselection Between GSM and LTE 9.5.1 Deployment Requirements 9.5.2 Activation 9.5.3 Activation Observation 9.5.4 Deactivation 9.6 Deploying PS Handover Between GSM and LTE Based on Coverage 9.6.1 Deployment Requirements 9.6.2 Precautions 9.6.3 Activation 9.6.4 Activation Observation 9.6.5 Deactivation 9.7 Deploying PS Handover Between GSM and LTE Based on Quality 9.7.1 Deployment Requirements 9.7.2 Precautions 9.7.3 Activation 9.7.4 Activation Observation 9.7.5 Deactivation 9.8 Deploying PS Handover Between GSM and LTE Based on Cell Load 9.8.1 Deployment Requirements 9.8.2 Precautions 9.8.3 Activation 9.8.4 Activation Observation http://localhost:7890/pages/GEE1231L/Draft%20A/GEE1231L/Draft%20A/resources/enus_bookmap_0001793237.html?ft=0&fe=10&hib=3.5.5&id=ENUS_BO…

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9.8.5 Deactivation 9.9 Deploying PS Handover Between GSM and LTE Based on Mode Priority 9.10 Deploying GSM/LTE Service Based PS Handover 9.10.1 Deployment Requirements 9.10.2 Precautions 9.10.3 Activation 9.10.4 Activation Observation 9.10.5 Deactivation 9.11 Deploying eNC2 Between GSM and LTE 9.11.1 Deployment Requirements 9.11.2 Activation 9.11.3 Activation Observation 9.11.4 Deactivation 9.12 Deploying eNACC Between GSM and LTE 9.12.1 Deployment Requirements 9.12.2 Precautions 9.12.3 Activation 9.12.4 Activation Observation 9.12.5 Deactivation 9.13 Deploying SRVCC 9.13.1 Deployment Requirements 9.13.2 Activation 9.13.3 Activation Observation 9.13.4 Deactivation 9.14 Deploying Multi Technology Neighbour Cell Based Handover 9.14.1 Deployment Requirements 9.14.2 Precautions 9.14.3 Activation 9.14.4 Activation Observation 9.14.5 Deactivation 9.15 Performance Optimization 9.16 Troubleshooting

10 Parameters 11 Counters 12 Glossary 13 Reference Documents

1 About This Document 1.1 Scope This document describes Interoperability Between GSM and LTE, including its technical principles, related features, network impact, and engineering guidelines. This document covers the following features: GBFD511301 Cell Reselection Between GSM and LTE GBFD511302 PS Handover Between GSM and LTE Based on Coverage GBFD511303 PS Handover Between GSM and LTE Based on Quality GBFD511304 PS Handover Between GSM and LTE Based on Cell Load GBFD511305 PS Handover Between GSM and LTE Based on Mode Priority GBFD511306 GSM/LTE Service Based PS Handover GBFD511307 eNC2 Between GSM and LTE GBFD511308 eNACC Between GSM and LTE GBFD511309 SRVCC GBFD511310 Multi Technology Neighbour Cell Based Handover

1.2 Intended Audience This document is intended for personnel who: Need to understand the features described herein Work with Huawei products

1.3 Change History This section provides information about the changes in different document versions. There are two types of changes, which are defined as follows:

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Feature change Change Type Change Description Feature BSC6900 Change Description BSC6910 Changes in features of a specific product version

GBTS

Parameter Change Parameter Change eGBTS

Editorial change Changes in wording or addition of information that was not described in the earlier version

02 (20151031) This issue includes the following changes. Change Type

Change Description

Parameter Change

Feature change

None

None

Editorial change

Changed the value of RimOnEcoSw(BSC6900,BSC6910) to ON(On) when the RIM procedure is implemented between the BSC and the eCoordinator in 4.2.2 LTEtoGSM eNACC.

None

01 (20150420) This issue does not include any changes.

Draft A (20150115) Compared with Issue 03 (20141230) of GBSS16.0, Draft A (20150115) of GBSS17.1 includes the following changes. Change Type

Change Description

Parameter Change

Feature change

Optimize the Packet Flow Context (PFC) procedure. Updated the following sections: 5.1.1 Overview 9.1 When to Use Interoperability Between GSM and LTE

Added the parameter PFCSwitch(BSC6900,BSC6910)

Changed the GSM/LTE interRAT cell reselection policies None when the GBFD171210 Flexible Camp Strategy Based on SPID or GBFD171209 IMSIbased Mobility Management for Multiple Operators feature is enabled. Updated the section 4.1 Overview. Editorial change

None

None

2 Overview 2.1 Introduction With the development of radio access technologies, the Global System for Mobile Communications (GSM) or Enhanced Data rates for GSM Evolution (EDGE) network is evolved to the Wideband Code Division Multiple Access (WCDMA) or Time DivisionSynchronous Code Division Multiple Access (TDSCDMA) network. Currently, mainstream operators start to deploy LTE networks. Actually, a continuous coverage cannot be achieved in the initial phase of LTE deployment. To achieve good network coverage, operators can use their GSM network as a supplement for the LTE network. Therefore, GSM/LTE interoperability is introduced. With this feature, mobile stations (MSs) in areas without LTE coverage or areas with heavy traffic load can reselect or be handed over to the GSM network. When the LTE network is deployed with the GSM network, MSs in idle mode can perform interRAT cell reselection; MSs in packet transfer mode can perform interRAT cell reselection and interRAT PS handover. Huawei provides the GSM/LTE interoperability feature, supporting bidirectional interRAT (GSM/LTE) cell reselection and bidirectional PS handover. The coexistence of the GSM, UMTS, and LTE is not described in this document. NOTE: All MSs involved in this feature are GSM/LTE dualmode MSs. The FDDbased LTE is not distinguished from the TDDbased LTE in this document. FDD stands for frequency division duplex, and TDD stands for time division duplex.

2.2 NEs Supporting the Feature Table 21 NEs supporting the feature Feature

BSC6900

BSC6910

GBTS

eGBTS

Cell Reselection Between GSM and LTE

√

√

√

√

PS Handover Between GSM and LTE Based on Coverage

√

√

√

√

PS Handover Between GSM and LTE Based on Quality

√

√

√

√

PS Handover Between GSM and LTE Based on Cell Load

√

√

√

√

PS Handover Between GSM and LTE Based on Mode Priority

√

√

√

√


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Cell Type GSM/LTE Service Based PS Maximum Number of Neighboring GSM Cell Frequencies √ √ Feature BSC6900 BSC6910 Handover

√ Remarks GBTS

√ eGBTS

eNC2 Between GSM and LTE

√

√

√

√

eNACC Between GSM and LTE

√

√

√

√

SRVCC

√

√

√

√

Multi Technology Neighbour Cell Based Handover

√

√

√

√

NOTE: √ indicates that the NE supports this feature. × indicates that the NE does not support this feature.

3 Related Concepts 3.1 SI2quater The System Information 2quater (SI2quater) is sent on the Broadcast Control Channel (BCCH) to all MSs in a cell. SI2quater contains the parameters related to the measurement of neighboring GSM and LTE cells and the measured results. There are 504 Physical Layer Cell Identities (PCIDs) in an LTE network. The SI2quater contains the LTE frequencies and the prohibited PCIDs if any corresponding to each frequency. All these frequencies and PCIDs are recorded in the LTE Cell Reselection List, which contains a maximum of eight frequencies. Priorities of neighboring cells are also broadcast to MSs through the SI2quater. The priority information is used for the prioritybased GSM or LTE cell reselection. The priority of neighboring GSM cells is determined by NCELLPRI(BSC6900,BSC6910) for neighboring GSM cells in the neighboring cell relationship; the priority of neighboring LTE cells is determined by NCELLPRI(BSC6900,BSC6910) for neighboring LTE cells in the neighboring cell relationship. The priority of neighboring GSM cells must be different from that of neighboring LTE cells The information about neighboring LTE cells can be split and transmitted through multiple consecutive SI2quaters. A start flag is marked in the first SI2quater containing the neighboring LTE cell information, and an end flag is marked in the last SI2quater containing the neighboring LTE cell information. In this way, the MS can decode these consecutive SI2quaters together to obtain the complete information about neighboring LTE cells. This accelerates the cell reselection. The information about neighboring LTE cells and network priorities is carried in the SI2quater when the parameter LTECELLRESELEN(BSC6900,BSC6910) is set to YES(Yes). When SI2QUATEROPTFORLTESW(BSC6900,BSC6910) is set to ON(On), the BSC sends MSs the neighboring LTE cell list in SI2Quater and Measurement Information using a dense coding scheme. This decreases the number of delivered SI2quater messages and shortens the PS service interruption duration. NOTE: As specified in 3GPP protocols, the BSC can send external neighboring cell information to MSs by using a maximum of 16 SI2Quater messages. If the number of external neighboring cells configured for a cell exceeds the maximum number of neighboring cells that can be contained in SI2Quater, the BSC will not send SI2Quater to MSs. Therefore, it is recommended that SI2QUATEROPTFORLTESW(BSC6900,BSC6910) be set to ON(On) to allow SI2Quater to contain information about more external neighboring cells.

3.2 Measurement of Neighboring LTE Cells The purpose of measuring neighboring LTE cells is to obtain the signal quality of neighboring LTE cells, ensuring that the MS can select a proper cell for cell reselection and handover. To facilitate MS performing GSM/LTE interRAT cell reselection and handover, related system information (SI) is required. It contains a list of neighboring LTE cells and parameters related to LTE cell reselection and handover, based on which the MS measures the signal quality of neighboring cells and performs cell reselection and handover. The SI is the SI2quater sent on the BCCH. The MSs in a GSM cell measure the signal quality of both neighboring GSM cells and neighboring interRAT cells. Neighboring interRAT cells include neighboring UMTS and LTE cells. In this document, however, only neighboring LTE cells are described. To reduce unnecessary measurements and power consumption of MSs, the BSS controls the neighboring cell measurement using the parameter THRPRISEARCH(BSC6900,BSC6910). The MS determines whether to measure neighboring LTE cells based on THRPRISEARCH(BSC6900,BSC6910) and receive level of the serving cell. The condition for triggering the measurement differs with the value of THRPRISEARCH(BSC6900,BSC6910). If THRPRISEARCH(BSC6900,BSC6910) is set to a value ranging from 0 to 14, the measurement is triggered when the receive level of the serving cell is lower than THRPRISEARCH(BSC6900,BSC6910). If THRPRISEARCH(BSC6900,BSC6910) is set to 15, MSs always measure the neighboring LTE cell information.

3.3 Reporting of Neighboring LTE Cell Information An MS reports the measured neighboring LTE cell information to the BSC. The BSC then appropriate neighboring LTE cell frequencies to the MS for cell reselection or handover. As specified in 10.5.2.20 Measurement Results in 3GPP TS 44.018 V10.8.0: When a cell is configured with neighboring LTE cells, the cell can be configured with a maximum of (31 – Number of neighboring LTE cell frequencies) neighboring GSM cell frequencies. If the number of configured neighboring GSM cell frequencies exceeds the preceding specifications, the MS will fail to report neighboring LTE cell information. To refrain the number of neighboring GSM cell frequencies from exceeding the protocol specifications, set CELL2GBA1OPTSW(BSC6900,BSC6910) and CELL2GBA2OPTSW(BSC6900,BSC6910) to ON(On) to allow the BSC to check the number of neighboring GSM cell frequencies. Table 31 lists the specifications of the number of neighboring GSM cell frequencies. Table 31 Specifications of the number of neighboring GSM cell frequencies Cell Type

Maximum Number of Neighboring GSM Cell Frequencies

Remarks

Common cell

MAX(31 – N, 28)

N indicates the total number of neighboring LTE cell frequencies. Its maximum number is 8. An MS can measure a maximum of three neighboring LTE cell frequencies.


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Cell Type

Maximum Number of Neighboring GSM Cell Frequencies

MOCNenable cell

Maximum number of neighboring GSM cell frequencies for configured for an operator: MAX(31 – N, 28)

Remarks

4 InterRAT Cell Reselection Between GSM and LTE 4.1 Overview GSM/LTE cell reselection involves the cell reselection from GSM to LTE and the cell reselection from LTE to GSM. Cell reselection is mainly performed by MSs. For an MS in idle mode, if the MS camps on a GSM cell, it can reselect an LTE cell; if the MS camps on an LTE cell, it can reselect a GSM cell. The MS measures the information about neighboring LTE cells, and then decides whether to reselect an LTE cell according to cell reselection parameters. For MSs in packet transfer mode, cell reselection modes include networkcontrolled mode 0 (NC0), networkcontrolled mode 1 (NC1), and external network controlled mode 2 (eNC2). The MS can reselect an LTE cell for PS services. NC0 cell reselection and NC1 cell reselection are performed by MSs without the intervention of the BSS. In eNC2 cell reselection, the BSS sends signaling to steer MSs towards desired camping cells. The LTECELLRESELEN(BSC6900,BSC6910) parameter specifies whether to enable GSM/LTE interRAT cell reselection. When LTECELLRESELEN(BSC6900,BSC6910) is set to NO(No), the BSS does not send the neighboring LTE cell list and the parameters related to GSM/LTE cell reselection. In this case, MSs in a GSM cell cannot reselect an LTE cell. When the GBFD171210 Flexible Camp Strategy Based on SPID feature is enabled, the BSS categorizes MSs by their characteristics based on subscriber profile IDs (SPIDs) and customizes GSM/LTE cell reselection policies based on MS categories. For details, see Flexible User Steering Feature Parameter Description. When the GBFD171209 IMSIbased Mobility Management for Multiple Operators feature is enabled, the BSS categorizes MSs by their operators based on international mobile subscriber identities (IMSIs) and customizes GSM/LTE cell reselection policies based on MS categories. For details, see IMSIbased Mobility Management for Multiple Operators Feature Parameter Description.

4.2 Cell Reselection from LTE to GSM 4.2.1 LTEtoGSM Cell Reselection When a UE in idle or connected mode moves from an LTE coverage area to a GSM coverage area, it may reselect a GSM cell. After reselecting a GSM cell, the UE initiates the location update and route area update in the GSM network. The GSM network handles the location update and route area update regardless of whether the UE is from an LTE cell or a GSM cell. For the BSS, the LTEtoGSM cell reselection procedure is the same as that between GSM cells. It is not described in this document.

4.2.2 LTEtoGSM eNACC This section describes the feature GBFD511308 eNACC Between GSM and LTE. The LTEtoGSM eNACC procedure is specified in 3GPP specifications. The GSMtoLTE eNACC procedure, however, is not specified in 3GPP specifications. The LTEtoGSM RIM procedure requires the BSC to support the RIM procedure. The BSC parameter RIMSUP(BSC6900,BSC6910) must be configured for a specific NSE to indicate whether the NSE supports the RIM procedure. The BSC supports the following RIM procedures: When RimOnEcoSw(BSC6900,BSC6910) is set to OFF(Off), the RIM procedure is implemented between the BSC and the SGSN over the Gb interface, as shown in Figure 41. When RimOnEcoSw(BSC6900,BSC6910) is set to ON(On), the RIM procedure is implemented between the BSC and the eCoordinator (a Huawei proprietary NE) over the SG interface, as shown in Figure 42. The RIM procedure is implemented between the BSC and the eCoordinator if both of the following conditions are met: The EUTRAN and GERAN devices are provided by Huawei and connected to the same eCoordinator. The CNs that the EUTRAN and GERAN devices are connected to do not support the RIM procedure. Alternatively, the RIM procedure is not enabled for both the EUTRAN and GERAN devices. The switches for the RIM procedure must be turned on for all NEs involved in the RIM procedure between the BSC and eCoordinator. Otherwise, the RIM cannot be implemented between the BSC and the eCoordinator. All NEs involved in the RIM procedure between the BSC and eCoordinator neither send RIM messages to the CN nor respond to the RIM messages from the CN.


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Figure 41 eNACC procedure with the RIM procedure implemented between the BSC and the SGSN

Figure 42 eNACC procedure with the RIM procedure implemented between the BSC and the eCoordinator

When the eNodeB decides to redirect or reselect the UE to a GSM cell, the redirection message RRC_CONN_REL or the cell reselection message Mobility From EUTRA Command carries the SI (including SI1, SI3, and SI13) about the target GSM cell. In addition, the value of the "purpose" information element (IE) in the Mobility From EUTRA Command message is cellChangeOrder. Upon receiving the RRC_CONN_REL or Mobility From EUTRA Command message, the UE can access the GSM cell without reading the SI, decreasing the access delay by about 1.8s. Before performing LTEtoGSM eNACC, the eNodeB obtains the SI of the target GSM cell through the RAN Information Management (RIM) procedure. RAN stands for radio access network. The RIM procedure consists of SI request and SI update procedures. SI request procedure: This procedure is initiated by the source eNodeB, requesting the SI about the target GSM cell. SI update procedure: This procedure is initiated by the target BSC, instructing the source eNodeB to update the SI about the target GSM cell.

4.3 Cell Reselection from GSM to LTE This section describes the feature GBFD511301 Cell Reselection Between GSM and LTE. This feature is introduced in 3GPP Release 8. 1. The BSC is configured with the following priority information for the cell reselection based on cell priority: LTE frequency priority, involving the parameter EUTRANPRI(BSC6900,BSC6910) or NCELLPRI(BSC6900,BSC6910). LTE frequency thresholds, involving parameters THRPRISEARCH(BSC6900,BSC6910), EUTRANQRXLEVMIN(BSC6900,BSC6910), THREUTRANHIGH(BSC6900,BSC6910), THREUTRANLOW(BSC6900,BSC6910), HPRIO(BSC6900,BSC6910), and


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Interoperability Between GSM and LTE Feature Parameter Description TRESEL(BSC6900,BSC6910). GSM serving cell priority, involving the GERANPRI(BSC6900,BSC6910) parameter. GSM serving cell threshold, involving the THRGSMLOW(BSC6900,BSC6910) parameter. where EUTRANPRI(BSC6900,BSC6910)is the common priority of LTE cells. NCELLPRI(BSC6900,BSC6910) is the common priority of LTE cells in neighboring relationship data. THRPRISEARCH(BSC6900,BSC6910) is the threshold for prioritybased interRAT cell search. If the receive level of the serving cell is higher than this threshold, MSs do not search for neighboring LTE cells whose priority is lower than that of the GSM serving cell. NOTE: THRPRISEARCH(BSC6900,BSC6910) does not take effect for neighboring cells whose priority is higher than the priority of the GSM serving cell. EUTRANQRXLEVMIN(BSC6900,BSC6910) is used to calculate the RSRP of the target cell during a GSMtoLTE cell reselection decision: RSRP = Measured RSRP – EUTRANQRXLEVMIN(BSC6900,BSC6910) THREUTRANHIGH(BSC6900,BSC6910) is the upper threshold for prioritybased GSMtoLTE cell reselections. MSs can reselect a neighboring LTE cell whose EUTRANPRI(BSC6900,BSC6910) is greater than GERANPRI(BSC6900,BSC6910) and whose RSRP is greater than THREUTRANHIGH(BSC6900,BSC6910). THREUTRANLOW(BSC6900,BSC6910) is the lower threshold for prioritybased GSMtoLTE cell reselections. If the receive levels of the serving cell and its neighboring GSM cells are lower than THRGSMLOW(BSC6900,BSC6910), MSs can reselect a neighboring LTE cell whose EUTRANPRI(BSC6900,BSC6910) is smaller than GERANPRI(BSC6900,BSC6910) and whose RSRP is greater than THREUTRANLOW(BSC6900,BSC6910). HPRIO(BSC6900,BSC6910) is the level hysteresis for prioritybased cell reselections. The MS is allowed to reselect a neighboring cell in UTRAN or EUTRAN whose priority is lower than the GERAN priority when all the following conditions are met: The receive levels of the serving cell and all neighboring GSM cells are lower thanTHRGSMLOW(BSC6900,BSC6910). The measured RSCP value of no neighboring UTRAN cell is higher than THRUTRANHIGH(BSC6900,BSC6910), and the measured RSRP value of no neighboring EUTRAN cell is higher than THREUTRANHIGH(BSC6900,BSC6910). The measured RSCP (or RSRP) value of one or more neighboring UTRAN (or EUTRAN) cells exceeds the measured receive level of the serving cell by at least the decibel value corresponding to the value of HPRIO(BSC6900,BSC6910). TRESEL(BSC6900,BSC6910) is the time hysteresis for prioritybased cell reselections. During prioritybased interRAT cell reselections, this parameter is used to specify the period for which the cell reselection condition must be met. GERANPRI(BSC6900,BSC6910) is the common priority of GSM cells. THRGSMLOW(BSC6900,BSC6910) is the lower threshold for GSM cells during prioritybased cell reselections. When C1 values of the serving cell and all measured neighboring GSM cells are lower than this threshold, MSs can reselect a neighboring LTE cell whose priority is lower than GERANPRI(BSC6900,BSC6910). 2. The MS has obtained the priority information for interRAT cell reselection. MSs in a GSM cell obtain the neighboring LTE cell list and cell reselection priorities from SI2quater, and then measure neighboring LTE cells according to the list and priorities. MSs in idle and packet transfer modes use the same GSMtoLTE NC0/NC1 cell reselection mechanism. 3. The MS supports prioritybased GSMtoLTE cell reselection. GSM/LTE dualmode MSs always support prioritybased GSMtoLTE cell reselection. The target cell in a prioritybased GSMtoLTE cell reselection is selected as follows: If within the period specified by TRESEL(BSC6900,BSC6910), multiple neighboring LTE cells meet the condition of EUTRANPRI(BSC6900,BSC6910) > GERANPRI(BSC6900,BSC6910) and RSRP > THREUTRANHIGH(BSC6900,BSC6910), the MS selects the neighboring LTE cell with the highest priority. If multiple cells have the highest priority, the MS selects the cell with the highest RSRP from these cells. If within the period specified by TRESEL(BSC6900,BSC6910), the serving GSM cell is lower than THRGSMLOW(BSC6900,BSC6910) of the serving GSM cell and all measured neighboring GSM cells, the MS reselects an LTE cell according to the following rules: If multiple neighboring LTE cells meet the conditions of EUTRANPRI(BSC6900,BSC6910) < GERANPRI(BSC6900,BSC6910) and RSRP > THREUTRANLOW(BSC6900,BSC6910) for the period specified by TRESEL(BSC6900,BSC6910), the MS selects the neighboring LTE cell with the highest priority. If multiple cells have the highest priority, the MS selects the cell with the highest RSRP from these cells. If no neighboring cells meet the preceding condition, the MS selects the neighboring LTE cell whose RSRP is greater than the receive level of the serving GSM cell plus HPRIO(BSC6900,BSC6910). If there are multiple cells whose RSRP is greater than the receive level of the serving GSM cell plus HPRIO(BSC6900,BSC6910), the MS selects the cell with the greatest RSRP from these cells.

When EUTRANPRI(BSC6900,BSC6910) is greater than GERANPRI(BSC6900,BSC6910), and THREUTRANHIGH(BSC6900,BSC6910) is small, the condition for prioritybased GSMtoLTE cell reselection is easy to meet. This decreases the number of MSs that camp on GSM cells.

4.4 Cell Reselection Based on Cell Priority GSMtoWCDMA After GBFD511301 Cell Reselection Between GSM and LTE is enabled, GSMtoWCDMA or GSMtoTDSCDMA prioritybased cell reselection for MSs in idle mode is enabled. The BSC reselects a target cell for an MS based on the configured WCDMA or TDSCDMA priority and related signal level thresholds. The prioritybased interRAT cell reselection algorithm is used for MSs during GSMtoWCDMA cell reselection if the following conditions are met: 1. The BSC is configured with the following priority information for the cell reselection based on cell priority: WCDMA frequency priority. Involved parameter: UTRANPRI(BSC6900,BSC6910). WCDMA frequency thresholds. Involved parameters: THRPRISEARCH(BSC6900,BSC6910), UTRANQRXLEVMIN(BSC6900,BSC6910), THRUTRANHIGH(BSC6900,BSC6910), THRUTRANLOW(BSC6900,BSC6910), HPRIO(BSC6900,BSC6910), and TRESEL(BSC6900,BSC6910). Priority of the GSM serving cell. Involved parameter: GERANPRI(BSC6900,BSC6910).


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Interoperability Between GSM and LTE Feature Parameter Description Serving cell threshold. Involved parameter: THRGSMLOW(BSC6900,BSC6910). Where, UTRANPRI(BSC6900,BSC6910) is the common priority of WCDMA cells. THRPRISEARCH(BSC6900,BSC6910) is the threshold for prioritybased interRAT cell search. If the receive level of the serving cell is higher than this threshold, MSs do not search for neighboring WCDMA cells whose priority is lower than that of the GSM serving cell. NOTE: THRPRISEARCH(BSC6900,BSC6910) does not take effect for neighboring cells whose priority is higher than the priority of the GSM serving cell. UTRANQRXLEVMIN(BSC6900,BSC6910) is used to calculate the RSCP of the target cell during a GSMtoWCDMA cell reselection decision: RSCP = Measured RSCP – UTRANQRXLEVMIN(BSC6900,BSC6910) THRUTRANHIGH(BSC6900,BSC6910) is the upper threshold for prioritybased GSMtoWCDMA cell reselections. MSs can reselect a neighboring WCDMA cell whose UTRANPRI(BSC6900,BSC6910)is greater than GERANPRI(BSC6900,BSC6910) and whose RSCP is greater than THRUTRANHIGH(BSC6900,BSC6910). THRUTRANLOW(BSC6900,BSC6910) is the lower threshold for prioritybased GSMtoWCDMA cell reselections. If the receive levels of the serving cell and all neighboring GSM cells are lower than THRGSMLOW(BSC6900,BSC6910), MSs can reselect a neighboring WCDMA cell whose UTRANPRI(BSC6900,BSC6910) is smaller than GERANPRI(BSC6900,BSC6910) and whose RSCP is greater than THRUTRANLOW(BSC6900,BSC6910). HPRIO(BSC6900,BSC6910) is the level hysteresis for prioritybased cell reselections. TRESEL(BSC6900,BSC6910) is the time hysteresis for prioritybased cell reselections. During prioritybased interRAT cell reselections, this parameter is used to specify the period for which the cell reselection condition must be met. GERANPRI(BSC6900,BSC6910) is the common priority of GSM cells. THRGSMLOW(BSC6900,BSC6910) is the lower threshold for GSM cells during prioritybased cell reselections. When C1 values of the serving cell and all measured neighboring GSM cells are lower than this threshold, MSs can reselect a neighboring WCDMA cell whose priority is lower than GERANPRI(BSC6900,BSC6910). 2. The MS has obtained the priority information for interRAT cell reselection. MSs in a GSM cell obtain the neighboring WCDMA cell list and cell reselection priorities from SI2quater, and then measure neighboring WCDMA cells according to the list and priorities. MSs in idle and packet transfer modes use the same GSMtoWCDMA NC0/NC1 cell reselection mechanism. 3. The MS supports prioritybased GSMtoWCDMA cell reselection.

GSM/WCDMA/LTE triplemode MSs always support prioritybased GSMtoWCDMA cell reselection. GSM/WCDMA dualmode MSs support prioritybased GSM toWCDMA cell reselection only in given scenarios. The support for prioritybased interRAT cell reselection is bidirectional. This means that if an MS supports prioritybased cell reselection from GSM to WCDMA, the MS also supports prioritybased cell reselection from WCDMA to GSM, and vice versa. The target cell in a prioritybased GSMtoWCDMA cell reselection is selected as follows: If within the period specified by TRESEL(BSC6900,BSC6910), multiple neighboring WCDMA cells meet both the following conditions, the MS selects the neighboring WCDMA cell with the highest priority: UTRANPRI(BSC6900,BSC6910)> GERANPRI(BSC6900,BSC6910) RSCP > THRUTRANHIGH(BSC6900,BSC6910) If multiple cells have the highest priority, the MS selects the cell with the highest RSCP from these cells. If within the period specified by TRESEL(BSC6900,BSC6910), the receive level of the serving GSM cell is lower than THRGSMLOW(BSC6900,BSC6910) of the serving GSM cell and all measured neighboring GSM cells, the MS reselects a WCDMA cell according to the following rules: If multiple neighboring WCDMA cells meet both the following conditions, the MS selects the neighboring WCDMA cell with the highest priority: UTRANPRI(BSC6900,BSC6910) < GERANPRI(BSC6900,BSC6910) RSCP > THRUTRANLOW(BSC6900,BSC6910) If multiple cells have the highest priority, the MS selects the cell with the highest RSCP from these cells. If no neighboring cells meet the preceding condition, the MS selects the neighboring WCDMA cell whose RSCP is greater than the receive level of the serving GSM cell plus HPRIO(BSC6900,BSC6910). If multiple cells have an RSCP greater than the receive level of the serving GSM cell plus HPRIO(BSC6900,BSC6910), the MS selects the cell with the greatest RSCP from these cells. When UTRANPRI(BSC6900,BSC6910) is greater than GERANPRI(BSC6900,BSC6910), and THRUTRANHIGH(BSC6900,BSC6910) is small, the condition for prioritybased GSMtoWCDMA cell reselection is easy to meet. In this case, there is a decrease in the number of MSs that camp on GSM cells.

GSMtoTDSCDMA The prioritybased interRAT cell reselection algorithm is used for MSs during GSMtoTDSCDMA cell reselection if the following conditions are met: 1. The BSC is configured with the following priority information for the cell reselection based on cell priority: TDSCDMA frequency priority. Involved parameter: UTRANPRI(BSC6900,BSC6910). TDSCDMA frequency thresholds. Involved parameters: THRPRISEARCH(BSC6900,BSC6910), UTRANQRXLEVMIN(BSC6900,BSC6910), THRUTRANHIGH(BSC6900,BSC6910), THRUTRANLOW(BSC6900,BSC6910), HPRIO(BSC6900,BSC6910), and TRESEL(BSC6900,BSC6910). Priority of the GSM serving cell. Involved parameter: GERANPRI(BSC6900,BSC6910). Serving cell threshold. Involved parameter: THRGSMLOW(BSC6900,BSC6910). where UTRANPRI(BSC6900,BSC6910) is the common priority of TDSCDMA cells. THRPRISEARCH(BSC6900,BSC6910) is the threshold for prioritybased interRAT cell search. If the receive level of the serving cell is higher than this threshold, MSs do not search for neighboring TDSCDMA cells whose priority is lower than that of the GSM serving cell.

http://localhost:7890/pages/GEE1231L/Draft%20A/GEE1231L/Draft%20A/resources/enus_bookmap_0001793237.html?ft=0&fe=10&hib=3.5.5&id=ENUS_B…

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Interoperability Between GSM and LTE Feature Parameter Description NOTE: THRPRISEARCH(BSC6900,BSC6910) does not take effect for neighboring cells whose priority is higher than the priority of the GSM serving cell. UTRANQRXLEVMIN(BSC6900,BSC6910) is used to calculate the RSCP of the target cell during a GSM to TDSCDMA cell reselection decision: RSCP = Measured RSCP – UTRANQRXLEVMIN(BSC6900,BSC6910) THRUTRANHIGH(BSC6900,BSC6910) is the upper threshold for prioritybased GSM to TDSCDMA cell reselections. MSs can reselect a neighboring TDSCDMA cell whose UTRANPRI(BSC6900,BSC6910) is greater than GERANPRI(BSC6900,BSC6910) and whose RSCP is greater than THRUTRANHIGH(BSC6900,BSC6910). THRUTRANLOW(BSC6900,BSC6910) is the lower threshold for prioritybased GSM to TDSCDMA cell reselections. If the receive levels of the serving cell and all neighboring GSM cells are lower than THRGSMLOW(BSC6900,BSC6910), MSs can reselect a neighboring TDSCDMA cell whose UTRANPRI(BSC6900,BSC6910) is smaller than GERANPRI(BSC6900,BSC6910) and whose RSCP is greater than THRUTRANLOW(BSC6900,BSC6910). HPRIO(BSC6900,BSC6910) is the level hysteresis for prioritybased cell reselections. TRESEL(BSC6900,BSC6910) is the time hysteresis for prioritybased cell reselections. During prioritybased interRAT cell reselections, this parameter is used to specify the period for which the cell reselection condition must be met. GERANPRI(BSC6900,BSC6910) is the common priority of GSM cells. THRGSMLOW(BSC6900,BSC6910) is the lower threshold for GSM cells during prioritybased cell reselections. When C1 values of the serving cell and all measured neighboring GSM cells are lower than this threshold, MSs can reselect a neighboring TDSCDMA cell whose priority is lower than GERANPRI(BSC6900,BSC6910). 2. The MS has obtained the priority information for interRAT cell reselection. MSs in a GSM cell obtain the neighboring TDSCDMA cell list and cell reselection priorities from SI2quater, and then measure neighboring TD SCDMA cells according to the list and priorities. MSs in idle and packet transfer modes use the same GSMtoTDSCDMA NC0/NC1 cell reselection mechanism. 3. The MS supports prioritybased cell reselection from GSM to TDSCDMA.

GSM/TDSCDMA/LTE triplemode MSs always support prioritybased GSMtoTDSCDMA cell reselection. MSs support prioritybased GSM to TDSCDMA cell reselection only in given scenarios. The support for prioritybased interRAT cell reselection is bidirectional. This means that if an MS supports prioritybased cell reselection from GSM to TDSCDMA, the MS also supports prioritybased cell reselection from TDSCDMA to GSM, and vice versa. The target cell in a prioritybased GSM to TDSCDMA cell reselection is selected as follows: If many neighboring TDSCDMA cells meet the condition of UTRANPRI(BSC6900,BSC6910)greater than GERANPRI(BSC6900,BSC6910) and RSCP greater than THRUTRANHIGH(BSC6900,BSC6910) for the period specified by TRESEL(BSC6900,BSC6910), the MS selects the neighboring TDSCDMA cell with the highest priority. If multiple cells have the highest priority, the MS selects the cell with the highest RSCP from these cells. If the receive level of the serving GSM cell is lower than THRGSMLOW(BSC6900,BSC6910) of the serving GSM cell and all measured neighboring GSM cells, the MS reselects a TDSCDMA cell according to the following rules: If many neighboring TDSCDMA cells meet the condition of UTRANPRI(BSC6900,BSC6910) greater than GERANPRI(BSC6900,BSC6910) and RSCP greater than THRUTRANLOW(BSC6900,BSC6910) for the period specified by TRESEL(BSC6900,BSC6910) the MS selects the neighboring TDSCDMA cell with the highest priority. If multiple cells have the highest priority, the MS selects the cell with the highest RSCP from these cells. If no neighboring cells meet the preceding condition, the MS selects the neighboring TDSCDMA cell whose RSCP is greater than the receive level of the serving GSM cell plus HPRIO(BSC6900,BSC6910). If multiple cells have an RSCP greater than the receive level of the serving GSM cell plus HPRIO(BSC6900,BSC6910), the MS selects the cell with the greatest RSCP from these cells. When UTRANPRI(BSC6900,BSC6910) is greater than GERANPRI(BSC6900,BSC6910), and THRUTRANHIGH(BSC6900,BSC6910) is small, the condition for prioritybased GSM to TDSCDMA cell reselection is easy to meet. In this case, there is a decrease in the number of MSs that camp on GSM cells.

4.5 eNC2 Between GSM and LTE This section describes the feature GBFD511307 eNC2 Between GSM and LTE. MSs in packet transfer mode can perform eNC2 interRAT cell reselection. The GSMtoLTE eNC2 cell reselection is triggered by the BSC. NC2 is enabled when NCO(BSC6900,BSC6910) is set to NC2(NC2) and NC2SPT and eNC2SPT are set to YES(Yes). In eNC2 mode, an MS performs interRAT neighboring LTE cell measurements based on QPEUTRAN(BSC6900,BSC6910), BESTEUTRANCELLNUM(BSC6900,BSC6910), and THREUTRANRPT(BSC6900,BSC6910) and reports the measurement reports (MRs). QPEUTRAN(BSC6900,BSC6910) is the threshold for MSs in packet transfer mode to search for LTE cells. MSs start to search for neighboring LTE cells when the level of the serving GSM cell is lower than the value of QPEUTRAN(BSC6900,BSC6910) (when QPEUTRAN(BSC6900,BSC6910) is set to a value within the range of 0 to 6) or higher than the value of QPEUTRAN(BSC6900,BSC6910) (when QPEUTRAN(BSC6900,BSC6910) is set to a value within the range of 8 to 14). When QPEUTRAN(BSC6900,BSC6910) is set to 7, MSs always search for neighboring LTE cells. BESTEUTRANCELLNUM(BSC6900,BSC6910) is the number of LTE cells that should be contained in the best cell list which is carried in the MR from an MS. THREUTRANRPT(BSC6900,BSC6910) is the threshold for reporting the LTE cell information. The MS reports only the information of LTE cells whose received signal code power (RSCP) is greater than this threshold. Figure 42 shows the procedure for eNC2 cell reselection from GSM to LTE.


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Figure 43 eNC2 cell reselection from GSM to LTE Coding Bits

Semantic

1. An MS in the GMM Ready state periodically sends Packet Measurement Report messages or Packet Enhanced Measurement Report messages to the BSC. These MRs contain the RSRP of neighboring LTE cells. 2. After receiving a packet MR, the BSC processes the measurement results. Then, the BSC determines whether to perform a cell reselection. 3. If the BSC determines to initiate a cell reselection, it sends the Packet Cell Change Order message to the MS to instruct the MS to reselect the specified target LTE cell. Target cell reselection is based on the eNC2 cell reselection algorithm. 4. If a cell reselection fails, the MS sends the Packet Cell Change Failure message to the BSC. After receiving this message, the BSC subtracts PENALTYRXLEV(BSC6900,BSC6910) from the receive level of the target cell. If the receive level of the target cell is less than PENALTYRXLEV(BSC6900,BSC6910), the BSC sets the receive level of the target cell to 0. The eNC2 cell reselection algorithms include the servicebased eNC2 cell reselection algorithm, qualitybased eNC2 cell reselection algorithm, loadbased eNC2 cell reselection algorithm, RATbased eNC2 cell reselection algorithm, and neighboring cell prioritybased eNC2 cell reselection algorithm.

4.5.1 ServiceBased Cell Reselection Algorithm The servicebased cell reselection is activated when TrafficReselAllow(BSC6900,BSC6910) is set to PERMIT(Permit). The BSC may find the IE "Service UTRAN CCO" in multiple DLUNITDATA PDUs, CREATEBSSPFC PDUs, or PSHANDOVERREQUEST PDUs sent from the serving GPRS support node (SGSN). The BSS considers that the last received IE "Service UTRAN CCO" is of the highest priority. The IE "Service UTRAN CCO" carries Service UTRAN CCO Value part and Service EUTRAN CCO Value part, which indicates the most suitable RAT for the current service. Table 41 and Table 42 respectively describe the values of Service UTRAN CCO Value part and Service EUTRAN CCO Value part and their meanings. Table 41 Values of Service UTRAN CCO Value part and their meanings Coding Bits

Semantic

000

Network initiated cell change order to universal terrestrial radio access network (UTRAN) or PS handover to UTRAN procedure should be performed

001

Network initiated cell change order to UTRAN or PS handover to UTRAN procedure should not be performed

010


111

If received, should be interpreted as no information available (bits 45 valid)

Other values

If received, should be interpreted as no information available

Table 42 Values of Service EUTRAN CCO Value part and their meanings Coding Bits

Semantic

01

Network initiated cell change order to evolved UTRAN (EUTRAN) or PS handover to EUTRAN procedure should be performed

10

Network initiated cell change order to EUTRAN or PS handover to EUTRAN procedure should not be performed

11


00


If the value of Service UTRAN CCO Value part is 000 or the value of Service EUTRAN CCO Value part is 01, the MS triggers a servicebased cell reselection. If the value of Service EUTRAN CCO Value part is 01, the MS selects a neighboring LTE cell with the highest neighboring cell priority and the best receive quality. If no neighboring LTE cells are available, the MS proceeds to perform a qualitybased, loadbased, or coveragebased eNC2 cell reselection. If the value of Service UTRAN CCO Value part is not 000 and the value of Service EUTRAN CCO Value part is not 01, the MS triggers a qualitybased, loadbased, or coveragebased cell reselection.


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4.5.2 QualityBased Cell Reselection Algorithm The qualitybased cell reselection is activated when URGENTRESELALLOW(BSC6900,BSC6910) is set to PERMIT(Permit). When the conditions for triggering a servicebased cell reselection are not met, the BSC determines whether to initiate a cell reselection based on the receive quality of the radio link on the Um interface. The MRs or bit error rate (BER) indicates the receive quality on the radio link. If the BER increases, the possible cause is that the signal level is too low or there is interference on the channel. In this case, the BSC instructs the MS to reselect a neighboring cell with higher signal level. In a receive quality measurement period, if the MS receive quality deterioration ratio is greater than the CELLRXQUALWORSENRATIOTHRSH(BSC6900,BSC6910) parameter, a qualitybased cell reselection is initiated. MS receive quality deterioration ratio = Times of bad radio link quality/Number of radio link quality MRs The MS selects the highest level candidate cell within the highest priority cells as the target cell. When Service EUTRAN CCO Value part is 10 or 11, none of LTE cells can be selected as a target cell.

4.5.3 LoadBased Cell Reselection Algorithm The loadbased cell reselection is activated when LOADRESELALLOW(BSC6900,BSC6910) is set to PERMIT(Permit). When neither the conditions for initiating a servicebased cell reselection nor the conditions for initiating a qualitybased cell reselection are met, a loadbased cell reselection is initiated to balance the load among the cells in the network. In a loadbased cell reselection, some MSs in cells with heavy load are reselected to cells. In addition, the MSs in neighboring cells should not be reselected to these heavilyloaded cells. Figure 43 shows the loadbased cell reselection. Figure 44 Loadbased cell reselection

When the serving cell is overloaded and the receive level in this cell is lower than LOADRESELMAXRXLEV(BSC6900,BSC6910), loadbased cell reselection is triggered. If the channel multiplexing rate of a cell is higher than the value of LOADRESELSTARTTHRSH(BSC6900,BSC6910), the load in the cell is heavy. Then, the loadbased cell reselection should be enabled. In a loadbased cell reselection, only the MS whose signal level is lower than LOADRESELMAXRXLEV(BSC6900,BSC6910) can be reselected to a neighboring cell. The MS selects the highest level candidate cell within the highest priority cells as the target cell. When the value of Service EUTRAN CCO Value part is 10 or 11, none of LTE cells can be selected as a target cell.

4.5.4 CoverageBased Cell Reselection Algorithm The coveragebased cell reselection is activated when NORMALRESELALLOW(BSC6900,BSC6910) is set to PERMIT(Permit). A coveragebased cell reselection is initiated when none of the conditions for initiating a servicebased, qualitybased, and loadbased cell reselection are met and the P/N criterion for initiating a coveragebased cell reselection is met. The P/N criterion for initiating a coveragebased eNC2 cell reselection is as follows: In the period specified by RESELWATCHPERIOD(BSC6900,BSC6910), the number of times that the receive level of the serving cell is lower than the value of MINACCRXLEV(BSC6900,BSC6910) reaches the value of RESELWORSENLEVTHRSH(BSC6900,BSC6910). The MS selects the highest level candidate cell within the highest priority cells as the target cell. When the value of Service EUTRAN CCO Value part is 10 or 11, none of LTE cells can be selected as a target cell.

4.5.5 RAT PriorityBased Cell Reselection Algorithm In the RAT prioritybased cell reselection algorithm, neighboring cells are ranked based on their RAT priorities. The RAT prioritybased neighboring cell ranking is applicable to qualitybased, loadbased, and coveragebased eNC2 cell reselections. The value of GERANPRI(BSC6900,BSC6910) or EUTRANPRI(BSC6900,BSC6910) (depends on the RAT of the cell) is used as the RAT priority of a cell. The priority of neighboring GSM cells must be different from that of neighboring LTE cells. If the priority of GSM is higher than that of LTE, then a neighboring GSM cell is preferentially selected as a candidate cell. If the priority of LTE is higher than that of GSM, then a neighboring LTE cell is preferentially selected as a candidate cell. If UTRANPRI(BSC6900,BSC6910) is configured, the RAT prioritybased NC2 cell reselection algorithm can be used for GSMtoWCDMA or GSMtoTDSCDMA cell reselection. If the GERAN priority is higher than the WCDMA priority, a neighboring GSM cell is preferentially selected as a candidate cell. If the WCDMA priority is higher than the GSM priority, a neighboring WCDMA cell is preferentially selected as a candidate cell. The values of GERANPRI(BSC6900,BSC6910), UTRANPRI(BSC6900,BSC6910), and EUTRANPRI(BSC6900,BSC6910) must be different.

4.5.6 Neighboring Cell PriorityBased Cell Reselection Algorithm In the neighboring cell prioritybased cell reselection algorithm, neighboring cells are ranked based on their priorities. The neighboring cell prioritybased neighboring cell ranking is involved in qualitybased, loadbased, and coveragebased eNC2 cell reselections. Neighboring cell priority is determined by the NCELLPRI(BSC6900,BSC6910) parameter. When NCELLPRI(BSC6900,BSC6910) is set to an invalid value, the value of GERANPRI(BSC6900,BSC6910) or EUTRANPRI(BSC6900,BSC6910) (depends on the RAT of the cell) is used as the value of this parameter. For example, if NCELLPRI(BSC6900,BSC6910) is set to an invalid value for a neighboring cell, the value of EUTRANPRI(BSC6900,BSC6910) (for the same RAT) is used as the value of this parameter. The priority of neighboring GSM cells must be different from that of neighboring LTE cells. Neighboring cells with the highest priority are selected as candidate cells.


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If a GSM cell is configured with neighboring WCDMA cells or neighboring TDSCDMA cells and these neighboring cells are configured with NCELLPRI(BSC6900,BSC6910), the neighboring cell prioritybased NC2 cell reselection algorithm can be used for GSMtoWCDMA or GSMtoTDSCDMA cell reselection. If the priority of a neighboring GSM cell is higher than that of a neighboring WCDMA or TDSCDMA cell, the neighboring GSM cell is preferentially selected as a candidate cell. If the priority of a neighboring WCDMA or TDSCDMA cell is higher than that of a GSM cell, the neighboring WCDMA or TDSCDMA cell is preferentially selected as a candidate cell. NCELLPRI(BSC6900,BSC6910) for the neighboring GSM, WCDMA, and TDSCDMA cells must be different.

5 GSM/LTE InterRAT PS Handover GSM/LTE interRAT PS handover is introduced in 3GPP Release 8. GSM/LTE interRAT PS handover involves LTEtoGSM and GSMtoLTE PS handovers.

5.1 GSMtoLTE PS Handover This section describes the features GBFD511302 PS Handover Between GSM and LTE Based on Coverage, GBFD511303 PS Handover Between GSM and LTE Based on Quality, GBFD511304 PS Handover Between GSM and LTE Based on Cell Load, GBFD511305 PS Handover Between GSM and LTE Based on Mode Priority, GBFD511306 GSM/LTE Service Based PS Handover, and GBFD511310 Multi Technology Neighbour Cell Based Handover.

5.1.1 Overview The PS handover from GSM to LTE is initiated by the BSC. PS handovers have two phases: handover preparation and handover execution. The GSMtoLTE PS handover is supported when SPTLTEOUTBSCPSHO(BSC6900,BSC6910) is set to SUPPORT(Support). The triggering conditions of a GSMtoLTE handover are as follows: The MS supports PS handover. The radio access capability reported by the MS contains the PS handover field, which indicates that the MS supports the PS handover. The BSC supports PS handover. The BSC supports PS handover when PSHOSUP(BSC6900,BSC6910) is set to YES(Support), and SPTLTEOUTBSCPSHO(BSC6900,BSC6910) is set to SUPPORT(Support). NACCSPT(BSC6900,BSC6910) and eNACCSPT(BSC6900,BSC6910) are set to YES(Yes) if NCO(BSC6900,BSC6910) is set to NC0(NC0) or NC1(NC1). NC2SPT(BSC6900,BSC6910) and eNC2SPT(BSC6900,BSC6910) are set to YES(Yes) if NCO(BSC6900,BSC6910) is set to NC2(NC2). The SGSN supports PS handover. The BVC RESET and BVC RESET ACK messages sent over the Gb interface contain the Extended Feature Bitmap field, which specifies whether the NSE supports PS handover: If the BVC RESET or BVC RESET ACK message sent by the SGSN does not contain the Extended Feature Bitmap field, or if the Extended Feature Bitmap field specifies that PS handover is not supported, none of the cells under the NSE of the SGSN supports PS handover. That is, the source cell does not support PS handover. If the Extended Feature Bitmap field specifies that PS handover is supported, all cells under the NSE of the SGSN support PS handover. That is, the source cell supports PS handover. Through the preceding negotiation procedure, the BSC determines whether the SGSN supports PS handover. The BSC and the SGSN support the packet flow context (PFC) procedure. PFCSUP(BSC6900,BSC6910) is set to YES(Support). PFCSwitch(BSC6900,BSC6910) is set to ON(On). When PFCSUP(BSC6900,BSC6910)is set to YES(Support) for an NSE, PFCSwitch(BSC6900,BSC6910)must be set to ON(On) for all the cells under the NSE. Otherwise, PS services in the cells whose PFCSwitch(BSC6900,BSC6910)is set to OFF(Off) will fail. The triggering conditions for a GSMtoLTE PS handover vary according to the setting of NCO(BSC6900,BSC6910): When NCO(BSC6900,BSC6910) is set to NC0(NC0) or NC1(NC1): NACCSPT(BSC6900,BSC6910) and eNACCSPT(BSC6900,BSC6910) are set to YES(Yes). The MS sends the BSC a PACKET CELL CHANGE NOTIFICATION message. SPTLTEOUTBSCPSHO(BSC6900,BSC6910) is set to SUPPORT(Support). NOTE: The purpose of setting NACCSPT(BSC6900,BSC6910) to YES(Yes) when NCO(BSC6900,BSC6910) is set to NC0(NC0) or NC1(NC1) is to enable MSs to send the BSC PACKET CELL CHANGE NOTIFICATION messages rather than to use the NACC feature. With the PACKET CELL CHANGE NOTIFICATION message, MSs can perform GSMtoLTE PS handovers. When NCO(BSC6900,BSC6910) is set to NC2(NC2): NC2SPT(BSC6900,BSC6910) and eNC2SPT(BSC6900,BSC6910) are set to YES(Yes). The MS sends the BSC an MR, and the BSC detects that the target cell is an LTE cell using the PS handover algorithm. SPTLTEOUTBSCPSHO(BSC6900,BSC6910) is set to SUPPORT(Support). The BSC determines whether the handover is a servicebased handover based on the DLUNITDATA PDU, CREATEBSSPFC PDU, or PSHANDOVER REQUEST PDU sent by the SGSN. If the handover is not a servicebased handover, the BSC selects the neighboring cell with the highest priority in the MR, and then initiates a qualitybased, loadbased, or coveragebased PS handover to that neighboring cell. The priority of a neighboring cell is specified by NCELLPRI(BSC6900,BSC6910). When NCELLPRI(BSC6900,BSC6910) is set to an invalid value, the value of GERANPRI(BSC6900,BSC6910), UTRANPRI(BSC6900,BSC6910), or EUTRANPRI(BSC6900,BSC6910) (depends on the RAT of the cell) is used as the value of this parameter. For example, if NCELLPRI(BSC6900,BSC6910) is set to an invalid value for a neighboring GSM cell, the value of GERANPRI(BSC6900,BSC6910) (for the same RAT) is used as the value of this parameter.

5.1.2 Procedure On the BSS side, the GSMtoLTE PS handover procedure is similar to the interBSC PS handover procedure. The differences are as follows:


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Interoperability Between GSM and LTE Feature Parameter Description The target cell is an LTE cell. The PS Handover Required message carries the Source BSC to Target eNodeB Transparent Container, which contains such IEs as MS radio access capability, Inter RAT handover Info, LTE INTER RAT HANDOVER INFO, and target cell. The PS Handover Required Acknowledge message carries the Source eNodeB to Target BSC Transparent Container, which contains IEs such as handover command and RRCConnectionReconfiguration.

Figure 51 shows the signaling procedure during GSMtoLTE PS handover preparation. Figure 51 Signaling procedure during GSMtoLTE PS handover preparation

1. The source BSS decides to initiate a PS handover to an LTE cell. At this point both uplink and downlink user data is transmitted through the following: Bearers between MS and Source BSS, BSSGP PFC tunnel(s) between source BSS and source SGSN, GTP tunnels between Source SGSN, Serving GW and PDN GW. 2. The source BSS sends the PS handover Required message to the source SGSN to request the core network (CN) to reserve resources in the target eNodeB, target MME, and the serving GW. 3. The source SGSN analyzes the IE "Target eNodeB Identifier" and determines that the type of handover is an interRAT PS handover to LTE. The source SGSN sends a Forward Relocation Request message which carries a PFI list to the target MME, requesting the target MME to reserve resources for the service. The target MME determines if the serving GW is to be relocated, for example, due to public land mobile network (PLMN) change. If the serving GW is to be relocated, the target MME selects the target serving GW and then sends a Create Bearer Request message to the target serving GW. 4a. The target serving GW allocates its local resources and returns them the target MME with a Create Bearer Response message carrying the address of the serving GW. 5. The target MME requests the target eNodeB to establish the bearer(s) by sending the message Handover Request to the target eNodeB. 5a. The target eNodeB allocates the request resources and returns the applicable parameters to the target MME in the message Handover Request Acknowledge (Target to Source Transparent Container, S1AP Cause, EPS Bearers setup list, EPS Bearers failed to setup list). Upon sending the Handover Request Acknowledge message the target eNodeB should be prepared to receive downlink GTP PDUs from the Serving GW for the accepted EPS bearers. 6./6a. If indirect forwarding is applied, the target MME starts to create an indirect data forwarding tunnel. 7. The target MME sends the Forward Relocation Response message to the source SGSN. Serving GW change indication indicates whether a new Serving GW has been selected. 8./8a. If indirect forwarding is applied, the source SGSN starts to create an indirect data forwarding tunnel. Figure 52 shows the GSMtoLTE PS handover execution.


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Figure 52 GSMtoLTE PS handover execution

The source SGSN continues to receive downlink and uplink user plane PDUs. When the source SGSN receives the Forward Relocation Response message it may start downlink NPDU relay, make a copy, and send the copy to the target eNodeB (for direct forwarding) or through the serving GW (for indirect forwarding), and the target eNodeB may start blind transmission of downlink user data towards the MS over the allocated radio channels. 1. The source SGSN completes the preparation phase towards source BSS by sending the PS HO Required Acknowledge message. This message includes all PFIs that could be established on the target side. The SGSN may suspend downlink data transfer before sending the PS HO Required Acknowledge message. The PS HO Required Acknowledge message also carries the handover command. The BSS attempts to empty the downlink buffer related to PFCs before sending the handover command to the MS. 2. The source BSS sends a PS Handover Command message, instructing the MS to hand over to the target LTE cell. 3. The MS moves to the LTE cell and performs access procedures toward the target eNodeB. 4. When the MS has got access to the target eNodeB, it sends the RRCConnectionReconfigurationComplete message to the target eNodeB. 5. When the MS has successfully accessed the target eNodeB, the target eNodeB sends a Handover Notify message to the target MME. 6./6a. After detecting that the MS has accessed the target cell, the target MME sends a Forward Relocation Complete message to the source SGSN. The source SGSN then responds with a Forward Relocation Complete Acknowledge message. After that, the source SGSN stops forwarding data to the source MME. 7./7a. The target MME completes the handover. 8. The source SGSN releases related resources through the BSS packet flow delete procedure. 9. The MS initiates the tracking area update procedure.

5.1.3 Fast PS Handover Between GSM and LTE Fast handover from GSM to LTE is applicable to the GSM/LTE cosite and cocoverage scenarios. It is also involved in the features GBFD511302 PS Handover Between GSM and LTE Based on Coverage, GBFD511303 PS Handover Between GSM and LTE Based on Quality, GBFD511304 PS Handover Between GSM and LTE Based on Cell Load, GBFD511306 GSM/LTE Service Based PS Handover. To enable the fast handover from GSM to LTE, set NACCSPT(BSC6900,BSC6910) and eNACCSPT(BSC6900,BSC6910) to NO(No), set NCO(BSC6900,BSC6910) to NC0(NC0) or NC1(NC1), set PSHOSUP(BSC6900,BSC6910) to YES(Support), set SPTBLINDHO(BSC6900,BSC6910) to SUPPORT(SUPPORT), and set SPTLTEOUTBSCPSHO(BSC6900,BSC6910) to SUPPORT(Support). The target cell for a fast PS handover from GSM to LTE is the neighboring LTE cell with the highest priority configured on the GSM network. NCELLPRI(BSC6900,BSC6910) specifies the priority of a neighboring LTE cell.

5.1.4 ServiceBased PS Handover This section describes the feature GBFD511306 GSM/LTE Service Based PS Handover.


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The servicebased PS handover is activated when TrafficReselAllow(BSC6900,BSC6910) is set to PERMIT(Permit). Coding Bits Semantic The BSC may find the IE "Service UTRAN CCO" in multiple DLUNITDATA PDUs, CREATEBSSPFC PDUs, or PSHANDOVERREQUEST PDUs sent from the SGSN. The BSS considers that the last received IE "Service UTRAN CCO" is of the highest priority. The IE "Service UTRAN CCO" carries Service UTRAN CCO Value part and Service EUTRAN CCO Value part, which indicates the most suitable RAT for the current service. Table 51 and Table 52 respectively describe the values of Service UTRAN CCO Value part and Service EUTRAN CCO Value part and their meanings. Table 51 Values of Service UTRAN CCO Value part and their meanings Coding Bits

Semantic

000

Network initiated cell change order to UTRAN or PS handover to UTRAN procedure should be performed

001


010


111

If received, should be interpreted as no information available (bits 45 valid)

Other values


Table 52 Values of Service EUTRAN CCO Value part and their meanings Coding Bits

Semantic

01

Network initiated cell change order to EUTRAN or PS handover to EUTRAN procedure should be performed

10


11


00


If the value of Service UTRAN CCO Value part is 000 or the value of Service EUTRAN CCO Value part is 01, the MS triggers a servicebased PS handover. If the value of Service EUTRAN CCO Value part is 01, the MS selects a neighboring LTE cell with the highest neighboring cell priority and the best receive quality. If no neighboring LTE cell is unavailable, the MS proceeds to perform a qualitybased, loadbased, or coveragebased PS handover. If the value of Service UTRAN CCO Value part is not 000 and the value of Service EUTRAN CCO Value part is not 01, the MS triggers a qualitybased, loadbased, or coveragebased PS handover.

5.1.5 QualityBased PS Handover This section describes the feature GBFD511303 PS Handover Between GSM and LTE Based on Quality. The qualitybased PS handover is activated when URGENTRESELALLOW(BSC6900,BSC6910) is set to PERMIT(Permit). When the conditions for triggering a servicebased PS handover are not met, the BSC determines whether to initiate a PS handover based on the receive quality of the radio link on the Um interface. The MRs or BER indicates the receive quality of a radio link. If the BER increases, the signal level may be too low or interference exists on the channel. In this case, the BSC instructs the MS to reselect a neighboring cell with higher signal level. Within a receive quality measurement period, if the MS receive quality deterioration ratio is greater than CELLRXQUALWORSENRATIOTHRSH(BSC6900,BSC6910), a qualitybased PS handover is initiated. MS receive quality deterioration ratio = Times of bad radio link quality/Number of radio link quality MRs The MS selects the highest level candidate cell within the highest priority cells as the target cell. When the value of Service EUTRAN CCO Value part is 10 or 11, none of LTE cells can be selected as a target cell.

5.1.6 LoadBased PS Handover This section describes the feature GBFD511304 PS Handover Between GSM and LTE Based on Cell Load. The loadbased PS handover is activated when LOADRESELALLOW(BSC6900,BSC6910) is set to PERMIT(Permit). When neither the conditions for initiating a servicebased PS handover nor the conditions for initiating a qualitybased PS handover are met, a loadbased PS handover is initiated to balance the load among the cells in the network. In a loadbased PS handover, some MSs in cells with heavy load are handed over to cells with light load. In addition, the MSs in neighboring cells should not be handed over to these heavilyloaded cells. Figure 53 shows the loadbased PS handover. Figure 53 Loadbased PS handover

When the serving cell is overloaded and the receive level in this cell is lower than LOADRESELMAXRXLEV(BSC6900,BSC6910), loadbased PS handover is triggered. If the channel multiplexing rate of a cell is higher than the value of the LOADRESELSTARTTHRSH(BSC6900,BSC6910) parameter, the load in the cell is heavy, and the loadbased PS handover should be enabled.


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Interoperability Between GSM and LTE Feature Parameter Description In a loadbased PS handover, only the MS whose signal level is lower than LOADRESELMAXRXLEV(BSC6900,BSC6910) can be handed over to a neighboring cell.

The MS selects the highest level candidate cell within the highest priority cells as the target cell. When the value of Service EUTRAN CCO Value part is 10 or 11, none of LTE cells can be selected as a target cell.

5.1.7 CoverageBased PS Handover This section describes the feature GBFD511302 PS Handover Between GSM and LTE Based on Coverage. The coveragebased PS handover is activated when NORMALRESELALLOW(BSC6900,BSC6910) is set to PERMIT(Permit). When none of the conditions for initiating a servicebased, qualitybased, and loadbased PS handover are met and the P/N criterion for initiating a coveragebased PS handover is met, a coveragebased PS handover is initiated. The P/N criterion for initiating a coveragebased PS handover is as follows: In the period specified by RESELWATCHPERIOD(BSC6900,BSC6910), the number of times that the receive level of the serving cell is lower than the value of MINACCRXLEV(BSC6900,BSC6910) reaches the value of RESELWORSENLEVTHRSH(BSC6900,BSC6910). The MS selects the highest level candidate cell within the highest priority cells as the target cell. When the value of Service EUTRAN CCO Value part is 10 or 11, none of LTE cells can be selected as a target cell.

5.1.8 RAT PriorityBased PS Handover This section describes the feature GBFD511305 PS Handover Between GSM and LTE Based on Mode Priority. In the RAT prioritybased PS handover algorithm, neighboring cells are ranked based on their RAT priorities. The RAT prioritybased neighboring cell ranking is applicable to qualitybased, loadbased, and coveragebased PS handovers. The value of GERANPRI(BSC6900,BSC6910) or EUTRANPRI(BSC6900,BSC6910) (depends on the RAT of the cell) is used as the RAT priority of a neighboring cell. The priority of neighboring GSM cells must be different from that of neighboring LTE cells. If the priority of GSM is higher than that of LTE, then a neighboring GSM cell is preferentially selected as a candidate cell. If the priority of LTE is higher than that of GSM, then a neighboring LTE cell is preferentially selected as a candidate cell.

5.1.9 Neighboring Cell PriorityBased PS Handover This section describes the feature GBFD511310 Multi Technology Neighbour Cell Based Handover. In the neighboring cell prioritybased PS handover algorithm, neighboring cells are ranked based on their priorities. The neighboring cell prioritybased neighboring cell ranking is applicable to qualitybased, loadbased, and coveragebased PS handovers. Neighboring cell priority is specified by the NCELLPRI(BSC6900,BSC6910) parameter. When NCELLPRI(BSC6900,BSC6910) is set to an invalid value, the value of GERANPRI(BSC6900,BSC6910) or EUTRANPRI(BSC6900,BSC6910) (depends on the RAT of the cell) is used as the value of this parameter. For example, if NCELLPRI(BSC6900,BSC6910) is set to an invalid value for a neighboring LTE cell, the value of EUTRANPRI(BSC6900,BSC6910) (for the same RAT) is used as the value of this parameter. The priority of neighboring GSM cells must be different from that of neighboring LTE cells. Neighboring cells with the highest priority are selected as candidate cells.

5.2 PS Handover from LTE to GSM 5.2.1 Overview The handover from LTE to GSM is triggered by the eNodeB. The LTEtoGSM PS handover is activated when SPTLTEINBSCPSHO(BSC6900,BSC6910) is set to SUPPORT(Support).

5.2.2 Procedure On the BSS side, the LTEtoGSM PS handover procedure is similar to the interBSC PS handover procedure. The differences are as follows: The PS Handover Request message carries the Source to Target Transparent Container, which contains IEs such as UE radio access capability, Inter RAT handover Info, LTE INTER RAT HANDOVER INFO, and the target cell. The PS Handover Request Acknowledge message carries the Source to Target Transparent Container, which contains IEs such as MobilityFromEUTRACommand and the ciphering algorithm. Figure 54 shows the signaling procedure during LTEtoGSM handover preparation.


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Figure 54 LTEtoGSM PS handover preparation

1. The source eNodeB decides to initiate a PS handover to a GSM cell. At this point both uplink and downlink user data is transmitted over the following: bearer(s) between UE and source eNodeB, GTP tunnel(s) between source eNodeB, serving GW and PDN GW. 2. The source eNodeB sends the source MME a Handover Required message which carries the target BSC identifier, source eNodeB identifier, and transparent container. 3. Based on the target BSC identifier, the source MME detects that the UE needs to be handed over to GSM and then sends a Forward Relocation Request message to the target SGSN. The target SGSN maps the EPS bearers to PDP contexts onetoone and maps the EPS Bearer QoS parameter values of an EPS bearer to the preRel8 QoS parameter values of a bearer context 4. The target SGSN determines whether the Serving GW is to be relocated, for example, due to PLMN change. If the serving GW is to be relocated, the target SGSN selects the target serving GW, and sends a Create Session Request message to the target serving GW. 4a. The target serving GW allocates resources to the service and then sends a Create Session Response message to the target SGSN. 5. The target SGSN creates the EPS Bearer context(s), and then sends a PS Handover Request to the target BSS, requesting the target BSS to set up PFC resources for the service. Based upon the aggregate BSS QoS profile (ABQP) for each PFC the target BSS decides about which PFCs to assign radio resources. Then, the target BSS allocates TBFs for each PFC that it can accommodate and prepares the Target to Source Transparent Container. 5a. The target BSS sends a PS Handover Request Acknowledge message, which carries the handover command, to the target SGSN. Upon sending the PS Handover Request Acknowledge message the target BSS should be prepared to receive downlink LLC PDUs from the target SGSN for the accepted PFCs. 6./6a. If indirect forwarding is applied, the target SGSN starts to create an indirect data forwarding tunnel. 7. The target SGSN sends the source MME a Forward Relocation Response message which carries the Target to Source Transparent Container. 8./8a. If indirect forwarding is applied, the source MME starts to create an indirect data forwarding tunnel. Figure 55 shows the signaling procedure during handover execution.


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Figure 55 LTEtoGSM PS handover execution

1. The Source MME completes the preparation phase towards source eNodeB by sending the Handover Command message that carries the Target to Source Transparent Container (PS Handover Command, PFI list). 2. The source eNodeB sends the MobilityFromEUTRACommand message to the UE, instructing the UE to hand over to the target access system. Upon the reception of that message, the UE associates its bearer IDs to the respective PFIs and suspends the uplink transmission of the user plane data. 3. The UE moves to the target GSM system and executes the handover. 4. After accessing the cell, the UE sends an XID response message to the target SGSN, and recovers the data transfer. 5. After receiving the first correct RLC/MAC block from the UE, the target BSS informs the target SGSN by sending the PS Handover Complete message. 6. The target BSS also relays the XID Response message to the target SGSN. Note that the message in step 6 and 7 may arrive in any order in the target SGSN. 7.8. After receiving the PS Handover Complete message, the target SGSN informs the source MME by sending the Forward Relocation Complete Notification message. The source MME then responds with a Forward Relocation Complete Acknowledge message. 9.10. The CN adjusts the user plane bearer. At this stage the user plane path is established for all EPS Bearer contexts between the MS, Target BSS, Target SGSN, Target Serving GW and PDN GW. The SGSN releases the nonaccepted EPS Bearer contexts. 11./12. The target SGSN may initiate an LLC/SNDCP XID negotiation. 13. The UE updates the routing area. 14. After receiving the PS Handover Complete message with Request for Inter RAT Handover Info setting to 1, the target SGSN returns a PS Handover Complete Acknowledge message, which carries the INTER RAT HANDOVER INFO. If the target SGSN cannot identify the Request for Inter RAT Handover Info, it does not return the PS Handover Complete Acknowledge message. If the target BSS receives the PS Handover Complete Acknowledge message, it sets the IE "Reliable INTER RAT HANDOVER" in the PS Handover Required message to 1. If the PS Handover Complete Acknowledge message is not received, the target BSS sets the IE "Reliable INTER RAT HANDOVER" to 0. 15. The source MME requests the source eNodeB and source serving GW to release related resources. If indirect forwarding was applied, the source MME release temporary resources used for indirect forwarding.

6 SRVCC 6.1 Overview This section describes the feature GBFD511309 SRVCC. In Single Radio Voice Call Continuity (SRVCC), speech services are implemented in LTE PS network, so technically the SRVCC feature can be regarded as a real LTE voice over IP (VoIP) technique. The SRVCC feature enables the speech services that are carried on the IP Multimedia Subsystem (IMS) to be handed over to a GSM network, maintaining the speech services. The SRVCC feature supports only handover of speech services from LTE to GSM that covers the same area. The SRVCC feature is activated when SRVCCHOEN(BSC6900,BSC6910) is set to YES(Yes). In addition, the parameters LTESAIMCC(BSC6900,BSC6910), LTESAIMNC(BSC6900,BSC6910), LTESAILAC(BSC6900,BSC6910), and LTESAISAC(BSC6900,BSC6910) must be set based on the setting of these parameters on the MSC server. The IMS must be deployed at the CN and must be capable of providing speech services to implement the SRVCC feature. With the assistance of the IMS in VoIP speech service routing, control, and triggering, and the assistance of the Mobile Management Entity (MME) in handover control, the speech service in the LTE network can be handed over to the GSM smoothly.


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Figure 61 shows the Network Elements (NEs) involved in SRVCC. Figure 61 NEs involved in SRVCC

6.2 Procedure On the BSS side, the SRVCC procedure is similar to the handover preparation and handover execution of an incoming GSM interRAT handover. The difference is that in SRVCC procedure, the source cell service area identifier (SAI) carried in the Handover Request is the default SAI configured in SRVCC. If the source cell SAI carried in the Handover Request is not the default SAI configured in SRVCC, the BSC handles the SRVCC as a normal incoming interRAT handover and sends a handover response message to the MSC. Figure 62 shows the procedure of LTEtoGSM SRVCC.


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Figure 62 SRVCC from LTE to GSM without DTM/PSHO support

1. The source LTE decides to perform a handover to the GSM based on MRs from the MS. 2. The source LTE sends a Handover Required message that carries the Source to Target Transparent Container to the MME. This message also shows that the SRVCC procedure is applied. 3. The MME separates speech data from other data based on the QoS Class Identifier (QCI) and the SRVCC handover indication. Then, the MME sends a Forward Relocation Request message to the MSC server to start a PS handover for speech data. The Forward Relocation Request message carries the VDN, MSISDN, Source to Target Transparent Container, and MM Context. 4. The MSC server handles the handover as an interMSC CS handover, and sends a Prepare Handover Request message to the target MSC. 5. The target MSC starts resource reservation in the target BSS cell. That is, the MSC sends a Handover Request message to the BSS, and then the BSS responds with a Handover Acknowledge message. 6. After resources are reserved in the target BSS cell, the target MSC sends a Prepare Handover Response message to the source MSC server. 7. The source MSC server sets up the circuit connection between the target MSC and the MGW associated with the MSC server. 8. The MSC server sends the ISUP IAM (VDN) to initiate the session transfer from IMS to CS domain. 9. The MSC server sends the MME a Forward Relocation Response message that carries the Target to Source Transparent Container, which contains resource information of the target cell. 10a. The source MME sends the source LTE a Handover Command message that carries the Target to Source Transparent Container to the source LTE. This handover involves only CS services. 10b. The source MME instructs the serving GW to release all S1U bearers of the EPS Bearer to deactivate CS bearers and keep the nonGBR bearers. After that, the MME does not send paging messages to the MS after receiving the paging data from the serving GW. 11. The source LTE sends a Handover from LTE Command message to instruct the MS to start handover. 12. The MS starts to access the GSM cell.


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13. After detecting that the MS has accessed the target cell, the target BSS sends a Handover Complete message to the target MSC. Feature Prerequisite Feature Mutually Exclusive Feature Impacted Feature 14. The target MSC sends an SES (Handover Complete) message to the MSC server. 15. The circuit connection between the target MSC and the MGW associated with the MSC server is released. For example, the target MSC sends the MSC server an ISDN User Part (ISUP) Answer message. 16. The MSC server sends a Forward Relocation Complete message to inform the source MME that the MS has accessed the target cell. The source MME then responds with a Forward Relocation Complete Acknowledge message. 17. The MSC server may start the MAP Update Location procedure to update the MS location information in the home subscriber server (HSS) or home location register (HLR).

7 Related Features Table 71 Related features Feature

Prerequisite Feature

Mutually Exclusive Feature

Impacted Feature


None

None

GBFD511403 Extended BCCH NOTE It is recommended that the Cell Reselection Between GSM and LTE be used together with the GBFD 511403 Extended BCCH feature to reduce the delay in LTEtoGSM cell reselection and increase the CS paging success rate.

PS Handover Between GSM and LTE Based on Coverage

GBFD511301 Cell Reselection Between GSM and LTE GBFD119502 PS Handover

None

None

PS Handover Between GSM and LTE Based on Quality


None

None

PS Handover Between GSM and LTE Based on Cell Load


None

None

PS Handover Between GSM and LTE Based on Mode Priority


None

None

GSM/LTE Service Based PS Handover GBFD511301 Cell Reselection Between GSM and LTE GBFD119502 PS Handover

None

None

eNC2 Between GSM and LTE

GBFD511301 Cell Reselection None Between GSM and LTE GBFD116201 NetworkControlled Cell Reselection (NC2)

None

eNACC Between GSM and LTE

GBFD511301 Cell Reselection Between GSM and LTE

None

None

SRVCC

None

None

If SRVCC is enabled with the GBFD 118702 MOCN Shared Cell feature, the values of LTESAIMCC(BSC6910,BSC6900), LTESAIMNC(BSC6910,BSC6900), LTESAILAC(BSC6910,BSC6900), and LTESAISAC(BSC6910,BSC6900) parameters on the BSC must be consistent with those on the MSC server.

Multi Technology Neighbour Cell Based Handover

GBFD511302 PS Handover Between GSM and LTE Based on Coverage, GBFD511303 PS Handover Between GSM and LTE Based on Quality, or GBFD511304 PS Handover Between GSM and LTE Based on Cell Load

None

None

8 Network Impact 8.1 Cell Reselection Between GSM and LTE 8.1.1 System Capacity The Cell Reselection Between GSM and LTE feature enables GSM/LTE dualmode MSs to reselect LTE cells in areas covered by an LTE network. This increases overall capacities of GSM and LTE networks.

8.1.2 Network Performance http://localhost:7890/pages/GEE1231L/Draft%20A/GEE1231L/Draft%20A/resources/enus_bookmap_0001793237.html?ft=0&fe=10&hib=3.5.5&id=ENUS_B…

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This feature enables GSM/LTE dualmode MSs to reselect LTE cells in areas covered by an LTE network, which increases PS data rates. In addition, this feature enables GSM/LTE dualmode MSs to reselect or hand over to GSM cells in areas not covered by an LTE network. This ensures service continuity.

8.2 PS Handover Between GSM and LTE Based on Coverage 8.2.1 System Capacity None

8.2.2 Network Performance The PS Handover Between GSM and LTE Based on Coverage feature enables GSM/LTE dualmode MSs to hand over to LTE cells when the LTE signal level is high. This increases PS data rates.

8.3 PS Handover Between GSM and LTE Based on Quality 8.3.1 System Capacity None

8.3.2 Network Performance The PS Handover Between GSM and LTE Based on Quality feature enables GSM/LTE dualmode MSs to hand over to LTE cells when transmission quality is poor. This increases PS data rates.

8.4 PS Handover Between GSM and LTE Based on Cell Load 8.4.1 System Capacity The PS Handover Between GSM and LTE Based on Cell Load feature enables GSM/LTE dualmode MSs to hand over to LTE cells when traffic load is heavy on the GSM network. This increases overall capacities of GSM and LTE networks.

8.4.2 Network Performance This feature enables GSM/LTE dualmode MSs to hand over to LTE cells when traffic load is heavy on the GSM network. This increases PS data rates.

8.5 PS Handover Between GSM and LTE Based on Mode Priority 8.5.1 System Capacity None

8.5.2 Network Performance The PS Handover Between GSM and LTE Based on Mode Priority feature enables GSM/LTE dualmode MSs to hand over to LTE cells when the LTE signal level is high. This increases PS data rates.

8.6 GSM/LTE Service Based PS Handover 8.6.1 System Capacity None

8.6.2 Network Performance The GSM/LTE Service Based PS Handover feature enables GSM/LTE dualmode MSs to hand over to LTE cells based on service requirements from the SGSN. This increases PS data rates.

8.7 eNC2 Between GSM and LTE 8.7.1 System Capacity None

8.7.2 Network Performance The eNC2 Between GSM and LTE feature enables GSM/LTE dualmode MSs to reselect an LTE network in eNC2 mode if one of the following conditions is met: The LTE signal level is high. The transmission quality on the GSM network is poor. The load on the GSM network is heavy. This feature increases PS data rates.

8.8 eNACC Between GSM and LTE 8.8.1 System Capacity None

8.8.2 Network Performance The eNACC Between GSM and LTE feature enables GSM/LTE dualmode MSs to obtain system information about GSM cells before reselecting these cells. This reduces service interruption duration.

8.9 SRVCC 8.9.1 System Capacity http://localhost:7890/pages/GEE1231L/Draft%20A/GEE1231L/Draft%20A/resources/enus_bookmap_0001793237.html?ft=0&fe=10&hib=3.5.5&id=ENUS_B…

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The SRVCC feature enables VoIP services performed by GSM/LTE dualmode MSs to hand over from LTE cells to GSM cells. This increases overall capacities of GSM and LTE networks.

8.9.2 Network Performance None

8.10 Multi Technology Neighbour Cell Based Handover 8.10.1 System Capacity None

8.10.2 Network Performance The Multi Technology Neighbour Cell Based Handover feature enables GSM/LTE dualmode MSs to hand over to LTE cells when the GSM signal level is low but the LTE signal level is high. This increases PS data rates.

9 Engineering Guidelines 9.1 When to Use Interoperability Between GSM and LTE 9.1.1 Cell Reselection Between GSM and LTE The Cell Reselection Between GSM and LTE feature can be used only if neighboring LTE cells are configured. Each GSM cell can be configured with a maximum of 64 neighboring LTE cells. These neighboring cells can use a maximum of eight frequencies, with each frequency supporting a maximum of 16 neighboring cells that do not support cell reselection.

9.1.2 PS Handover Between GSM and LTE Based on Coverage The PS Handover Between GSM and LTE Based on Mode Priority feature can be used only if both the BSC and SGSN support the PFC and PS handover procedures. The PFCSwitch(BSC6900,BSC6910), PFCSUP(BSC6900,BSC6910) and PSHOSUP(BSC6900,BSC6910) parameters are configured on the BSC side to indicate the support of the PFC and PS handover by the NSE. When PFCSUP(BSC6900,BSC6910)is set to YES(Support) for an NSE, PFCSwitch(BSC6900,BSC6910)must be set to ON(On) for all the cells under the NSE. Otherwise, PS services in the cells whose PFCSwitch(BSC6900,BSC6910)is set to OFF(Off) will fail.

9.1.3 PS Handover Between GSM and LTE Based on Quality The PS Handover Between GSM and LTE Based on Mode Priority feature can be used only if both the BSC and SGSN support the PFC and PS handover procedures. The PFCSwitch(BSC6900,BSC6910), PFCSUP(BSC6900,BSC6910) and PSHOSUP(BSC6900,BSC6910) parameters are configured on the BSC side to indicate the support of the PFC and PS handover by the NSE. When PFCSUP(BSC6900,BSC6910)is set to YES(Support) for an NSE, PFCSwitch(BSC6900,BSC6910)must be set to ON(On) for all the cells under the NSE. Otherwise, PS services in the cells whose PFCSwitch(BSC6900,BSC6910)is set to OFF(Off) will fail.

9.1.4 PS Handover Between GSM and LTE Based on Cell Load The PS Handover Between GSM and LTE Based on Mode Priority feature can be used only if both the BSC and SGSN support the PFC and PS handover procedures. The PFCSwitch(BSC6900,BSC6910), PFCSUP(BSC6900,BSC6910) and PSHOSUP(BSC6900,BSC6910) parameters are configured on the BSC side to indicate the support of the PFC and PS handover by the NSE. When PFCSUP(BSC6900,BSC6910)is set to YES(Support) for an NSE, PFCSwitch(BSC6900,BSC6910)must be set to ON(On) for all the cells under the NSE. Otherwise, PS services in the cells whose PFCSwitch(BSC6900,BSC6910)is set to OFF(Off) will fail.

9.1.5 PS Handover Between GSM and LTE Based on Mode Priority The PS Handover Between GSM and LTE Based on Mode Priority feature can be used only if both the BSC and SGSN support the PFC and PS handover procedures. The PFCSwitch(BSC6900,BSC6910), PFCSUP(BSC6900,BSC6910) and PSHOSUP(BSC6900,BSC6910) parameters are configured on the BSC side to indicate the support of the PFC and PS handover by the NSE. When PFCSUP(BSC6900,BSC6910)is set to YES(Support) for an NSE, PFCSwitch(BSC6900,BSC6910)must be set to ON(On) for all the cells under the NSE. Otherwise, PS services in the cells whose PFCSwitch(BSC6900,BSC6910)is set to OFF(Off) will fail.

9.1.6 GSM/LTE Service Based PS Handover The PS Handover Between GSM and LTE Based on Mode Priority feature can be used only if both the BSC and SGSN support the PFC and PS handover procedures. The PFCSwitch(BSC6900,BSC6910), PFCSUP(BSC6900,BSC6910) and PSHOSUP(BSC6900,BSC6910) parameters are configured on the BSC side to indicate the support of the PFC and PS handover by the NSE. When PFCSUP(BSC6900,BSC6910)is set to YES(Support) for an NSE, PFCSwitch(BSC6900,BSC6910)must be set to ON(On) for all the cells under the NSE. Otherwise, PS services in the cells whose PFCSwitch(BSC6900,BSC6910)is set to OFF(Off) will fail.

9.1.7 eNC2 Between GSM and LTE None

9.1.8 eNACC Between GSM and LTE The eNACC Between GSM and LTE feature can be used only if the BSC supports the RIM procedure. To support the RIM procedure, set the RIMSUP(BSC6900,BSC6910) parameter for the NSE to indicate whether the RIM procedure is supported.

9.1.9 SRVCC None

9.1.10 Multi Technology Neighbour Cell Based Handover None

9.2 Required Information N/A


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9.3 Network Planning Aspect

Requirement Plan an appropriate number of neighboring GSM cell frequencies. To ensure that MSs can properly report neighboring LTE cell information after the following features are enabled, For details about the specifications of the number of neighboring GSM cell frequencies, see 3.3 Reporting of Neighboring LTE Cell Information. This ensures that MSs properly report neighboring LTE cell information after the following features are enabled: GBFD511302 PS Handover Between GSM and LTE Based on Coverage GBFD511303 PS Handover Between GSM and LTE Based on Quality GBFD511304 PS Handover Between GSM and LTE Based on Cell Load GBFD511305 PS Handover Between GSM and LTE Based on Mode Priority GBFD511306 GSM/LTE Service Based PS Handover GBFD511307 eNC2 Between GSM and LTE GBFD511310 Multi Technology Neighbour Cell Based Handover

9.4 Overall Deployment Procedure The Cell Reselection Between GSM and LTE feature, which is a basic function of Interoperability between GSM and LTE, must be deployed preferentially. Other features are optional function and can be enabled based on individual needs.

9.5 Deploying Cell Reselection Between GSM and LTE 9.5.1 Deployment Requirements Table 91 Deployment requirements Aspect

Requirement

Related features

See 7 Related Features.

BSC

None

BTS

The 3900 series base stations are used because only this type of base stations supports this feature. NOTE: The BTS3900B and BTS3900E do not support this feature.

GSM networking

None

MS

MSs support both GSM and LTE networks and bidirectional cell reselection between GSM and LTE.

MSC

None

License

The license controlling this feature has been activated. For details on how to activate the license, see License Management Feature Parameter Description. For details about license items, see License Control Item Description.

Others

The base station subsystem (BSS) and network subsystem (NSS) support cell reselection between GSM and LTE. The packet control unit (PCU), SGSN, gateway GPRS support node (GGSN), and HLR support this feature.

9.5.2 Activation Using MML Commands On the BSC LMT, perform the following steps: 1. Run the ADD GEXTLTECELL command to add an external LTE cell. In this step, set EUTRAN Cell Type according to onsite requirements. 2. Run the SET GCELLHOBASIC command with LTE Cell Reselection Allowed set to YES(Yes) for the target GSM cell. 3. Run the SET GCELLPRIEUTRANSYS command with GERAN Priority set to a value less than that of EUTRAN Priority. 4. Run the ADD GLTENCELL command to add a neighboring LTE cell. In this step, set the parameters as follows: Set Source Cell Index to the index of the cell to be verified. Set Neighbor Cell Index to the index of the added LTE cell. Set Support Cell Reselection to SUPPORT(SUPPORT). 5. Run the SET OTHSOFTPARA command with Support Sent 2QUATER set to YES(Yes).

MML Command Examples //Adding an external LTE cell ADD GEXTLTECELL: EXTLTECELLID=8048, EXTLTECELLNAME="cell", MCC="460", MNC="188", ENODEBTYPE=HOME, CI=0, TAC=1, FREQ=2, PCID=3, EUTRANTYPE=FDD; //Enabling LTE cell reselection SET GCELLHOBASIC: IDTYPE=BYID, CELLID=0, LTECELLRESELEN=YES; //Setting the cell priority and the parameters about EUTRAN system information SET GCELLPRIEUTRANSYS: IDTYPE=BYID, CELLID=0, GERANPRI=1, EUTRANPRI=7, THREUTRANHIGH=2, EUTRANQRXLEVMIN=10;


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//Enabling cell reselection from a GSM cell to a specific neighboring LTE cell SN Managed Object (MO) NE Parameter Name Parameter ID ADD GLTENCELL: IDTYPE=BYID, SRCLTENCELLID=0, NBRLTENCELLID=8048, SPTRESEL=SUPPORT; //Enabling the sending of System Information 2Quater

Configurable in CME Batch Modification Center

SET OTHSOFTPARA: Send2QuterFlag=YES;

Using the CME (Method 1) NOTE: When configuring the GSM/WCDMA Interoperability feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 92. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 92 Configuring parameters on the CME SN

Managed Object (MO)

NE

Parameter Name

Parameter ID


1

GEXTLTECELL

BSC6900/BSC6910

EUTRAN Cell Type

EUTRANTYPE

Yes

2

GCELLHOBASIC

BSC6900/BSC6910

LTE Cell Reselection Allowed

LTECELLRESELEN

Yes

3

GCELLPRIEUTRANSYS BSC6900/BSC6910

GERAN Priority

GERANPRI

Yes

BSC6900/BSC6910

EUTRAN Priority

UTRANPRI

Yes

BSC6900/BSC6910

Source Cell Index

SRCLTENCELLID

No

Neighbor Cell Index

NBRLTENCELLID

4

GLTENCELL

Support Cell Reselection SPTRESEL 5

OTHSOFTPARA

BSC6900/BSC6910

Support Sent 2QUATER

Send2QuterFlag

Yes

Using the CME (Method 2) This feature can be batch activated using the CME. For detailed operations, see the following section in the CME product documentation or online help: CME Management > CME Guidelines > Enhanced Feature Management > Feature Operation and Maintenance.

9.5.3 Activation Observation 1. On the BSC LMT, run the LST GCELLHOBASIC command to query the value of LTE Cell Reselection Allowed. Expected result: The value of LTE Cell Reselection Allowed is Yes. 2. Use a dualmode MS to camp on a GSM cell. On the BSC LMT, trace CS RSL messages over the Abis interface. On the RSL tab page, set Filter Flag to Cell and Cell ID (cell1, cell2, ...cell16) to the index of the cell to be verified. Then, click Submit. Expected result: The MS successfully reselects to an LTE cell. The RSL message tracing result indicates that the BCCH Information message is traced and its message type is System Information 2Quater.

9.5.4 Deactivation Using MML Commands On the BSC LMT, perform the following steps: 1. Run the SET GCELLHOBASIC command to disable cell reselection from a GSM cell to all neighboring LTE cells. In this step, set LTE Cell Reselection Allowed to NO(No). 2. (Optional) To disable cell reselection from a GSM cell to a specific LTE cell, run the MOD GLTENCELL command with Support Cell Reselection set to UNSUPPORT(UNSUPPORT).

MML Command Examples //Disabling cell reselection from a GSM cell to all neighboring LTE cells SET GCELLHOBASIC: IDTYPE=BYID, CELLID=0, LTECELLRESELEN=NO; //Disabling cell reselection from a GSM cell to a specific neighboring LTE cell MOD GLTENCELL: IDTYPE=BYID, SRCLTENCELLID=0, NBRLTENCELLID=8048, SPTRESEL=UNSUPPORT;

Using the CME NOTE:


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When configuring the Cell Reselection Between GSM and LTE feature on the CME, you must perform a single configuration first, and then perform batch SN Aspect MO NE Parameter Name Requirement Parameter ID Configurable in CME modifications if required. Batch Modification Configure the parameters of a single object before a batch modification. Perform a batch modification before logging out of the parameter setting interface. Center 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 93. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 93 Configuring parameters on the CME SN

MO

NE

Parameter Name

Parameter ID


1

GCELLHOBASIC

BSC6900/BSC6910

LTE Cell Reselection Allowed

LTECELLRESELEN

Yes

2 (Optional)

GLTENCELL

BSC6900/BSC6910

Support Cell Reselection SPTRESEL

No

NOTE: Configure this MO when cell reselection from a GSM cell to a specific LTE cell is disabled.

9.6 Deploying PS Handover Between GSM and LTE Based on Coverage 9.6.1 Deployment Requirements Table 94 Deployment requirements Aspect

Requirement

Related features


BSC

None

BTS

None

GSM networking

None

MS

MSs support PS Handover Between GSM and LTE Based on Coverage.

MSC

None

License


Others

The SGSN supports PS handover between GSM and LTE. The SGSN supports the packet flow context (PFC) procedure. A GSM cell is configured with a neighboring LTE cell, and the neighboring LTE cell supports cell reselection. NOTE: To add an external LTE cell and enable the LTE cell reselection, perform the following steps: 1. Run the ADD GEXTLTECELL command to add an external LTE cell. In this step, set EUTRAN Cell Type based on actual conditions. 2. Run the SET GCELLHOBASIC command with LTE Cell Reselection Allowed set to YES(Yes). An LTE cell is configured with a neighboring GSM cell. In addition, the LTE cell supports PS Handover Between GSM and LTE Based on Coverage.

9.6.2 Precautions When an NSE supports PS handover, all the cells under the NSE support PS handover.

9.6.3 Activation Using MML Commands Activating PS handover from GSM to LTE based on coverage On the BSC LMT, perform the following steps: 1. Run the SET GCELLGPRS command with its parameters set as follows:


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Interoperability Between GSM and LTE Feature Parameter Description Set GPRS to SupportAsInnPcu(Support as builtin PCU). Managed Object (MO) NE Parameter Name Set Support NC2 to YES(Yes).

SN

Parameter ID

Set Support Out LTE Intercell PS Handover to SUPPORT(Support).


2. Run the SET GCELLPSBASE command with Network Control Mode set to NC2(NC2). 3. Run the SET GCELLNC2PARA command. In this step, set Cell Normal Reselection Allowed to PERMIT(Permit), and set the following parameters according to onsite requirements: Normal Cell Reselection Watch Period Cell Reselection Hysteresis Cell Penalty Duration Normal Cell Reselection Worsen Level Threshold Cell Reselection Level Threshold Cell Penalty Level Allowed Measure Report Missed Number Filter Window Size Cell Reselect Interval 4. Run the SET GCELLPRIEUTRANSYS command with EUTRAN Priority set to 7. 5. Run the SET GCELL2GBA1 command with 2G BA1 Neighboring Cell Optimization Switch set to ON(On). 6. Run the SET GCELLHO2GBA2 command with 2G BA2 Neighboring Cell Optimization Switch set to ON(On). Activating PS handover from LTE to GSM based on coverage On the BSC LMT, run the SET GCELLGPRS command with GPRS set to SupportAsInnPcu(Support as builtin PCU) and Support In LTE Inter cell PS Handover set to SUPPORT(Support).

MML Command Examples //Activating PS handover from GSM to LTE based on coverage SET GCELLGPRS: IDTYPE=BYID, CELLID=0, GPRS=SupportAsInnPcu, NC2SPT=YES, SPTLTEOUTBSCPSHO=SUPPORT; SET GCELLPSBASE: IDTYPE=BYID, CELLID=0, NCO=NC2; SET GCELLNC2PARA: IDTYPE=BYID, CELLID=0, MINACCRXLEV=15, RESELHYST=6, PENALTYRXLEV=30, PENALTYLASTTM=10, ALLOWEDMEASRPTMISSEDNUM=4, FILTERWNDSIZE=6, NORMALRESELALLOW=PERMIT, RESELWATCHPERIOD=10, RESELWORSENLEVTHRSH=1, RESELINTERVAL=2; SET GCELLPRIEUTRANSYS: IDTYPE=BYID, CELLID=0, EUTRANPRI=7; SET GCELL2GBA1: IDTYPE=BYID, CELLID=0, CELL2GBA1OPTSW=ON; SET GCELLHO2GBA2: IDTYPE=BYID, CELLID=0, CELL2GBA2OPTSW=ON; //Activating PS handover from LTE to GSM based on coverage SET GCELLGPRS: IDTYPE=BYID, CELLID=0, GPRS=SupportAsInnPcu, SPTLTEINBSCPSHO=SUPPORT;

Using the CME NOTE: When configuring the PS Handover Between GSM and LTE Based on Coverage feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 95 or Table 96. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Activating PS handover from GSM to LTE based on coverage Table 95 Configuring parameters on the CME SN

Managed Object (MO)

NE

Parameter Name

Parameter ID


1

GCELLGPRS

BSC6900/BSC6910

GPRS

GPRS

Yes

Support NC2

NC2SPT

Support Out LTE Inter SPTLTEOUTBSCPSHO cell PS Handover 2

GCELLPSBASE

BSC6900/BSC6910

Network Control Mode NCO

Yes


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Interoperability Between GSM and LTE Feature Parameter Description SN

3

Managed Object (MO) MO

NE

NE

GCELLNC2PARA

BSC6900/BSC6910

Parameter Name Parameter Name Parameter IDParameter ID

Configurable in CME Supports CME Batch Modification Batch Modification Center Center

Cell Normal Reselection Allowed

NORMALRESELALLOW

Yes

Cell Reselection Hysteresis

RESELHYST

Normal Cell Reselection Watch Period

RESELWATCHPERIOD

Cell Penalty Duration

PENALTYLASTTM

Normal Cell Reselection Worsen Level Threshold

RESELWORSENLEVTHRSH

Cell Reselection Level MINACCRXLEV Threshold Cell Penalty Level

PENALTYRXLEV

Allowed Measure Report Missed Number

ALLOWEDMEASRPTMISSEDNUM

Filter Window Size

FILTERWNDSIZE

Cell Reselect Interval

RESELINTERVAL

4


EUTRAN Priority

EUTRANPR

Yes

5

GCELL2GBA1

BSC6900/BSC6910

2G BA1 Neighboring Cell Optimization Switch

CELL2GBA1OPTSW

No

6

GCELLHO2GBA2

BSC6900/BSC6910


CELL2GBA2OPTSW

No

Activating PS handover from LTE to GSM based on coverage Table 96 Configuring parameters on the CME SN

MO

NE

Parameter Name

Parameter ID

Supports CME Batch Modification Center

1

GCELLGPRS

BSC6900/BSC6910

GPRS

GPRS

Yes

BSC6900/BSC6910

Support In LTE Inter cell PS Handover

SPTLTEINBSCPSHO

9.6.4 Activation Observation Verifying PS handover from GSM to LTE based on coverage 1. On the BSC LMT, run the SET GCELLNC2PARA command with Cell Urgent Reselection Allowed, Cell Load Reselection Allowed, and Cell Service Reselection Allowed set to FORBID(Forbid). 2. Use an MS that camps on the serving GSM cell to upload or download data. On the BSC LMT, trace PS messages over the Um interface and PTP messages over the Gb interface. 3. Move the MS or increase the power of the target LTE cell so that the receive level of the target LTE cell is higher than that of the serving GSM cell. 4. Check the messages traced over the Um and Gb interfaces. If all the following messages are available, the PS handover from GSM to LTE Based on Coverage has been enabled: PS Handover Required message over the Gb interface: sent from the BSC to the SGSN PS Handover Required Acknowledge message over the Gb interface: sent from the SGSN to the BSC PS Handover Command message over the Um interface: sent from the BSC to MSs Verifying PS handover from LTE to GSM based on coverage 1. Use an MS that camps on the serving LTE cell to upload or download data. On the BSC LMT, trace PTP messages over the Gb interface for the target GSM cell. 2. Move the MS or increase the power of the target GSM cell so that the receive level of the target GSM cell is higher than that of the serving LTE cell. 3. Check the PS services over the Um interface and the messages traced over the Gb interface in the target GSM cell. If all the following messages over the Gb interface are available, the PS handover from LTE to GSM based on coverage has been enabled: PS Handover Request message: sent from the SGSN to the BSC PS Handover Request Acknowledge message: sent from the BSC to the SGSN PS Handover Complete message: sent from the BSC to the SGSN


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SN NOTE: MO NE Parameter Name Parameter ID Configurable in CME Aspect Requirement Batch Modification Before the verification, set Support In LTE Intercell PS Handover to UNSUPPORT(Not Support) for all cells except the target GSM cell. After the verification, Center set Support In LTE Intercell PS Handover back to SUPPORT(Support) for these cells.

9.6.5 Deactivation Using MML Commands On the BSC LMT, run the SET GCELLGPRS command with Support Out LTE Intercell PS Handover and Support In LTE Intercell PS Handover set to UNSUPPORT(Not Support).

MML Command Examples SET GCELLGPRS: IDTYPE=BYID, CELLID=0, GPRS=SupportAsInnPcu, SPTLTEINBSCPSHO=UNSUPPORT, SPTLTEOUTBSCPSHO=UNSUPPORT;

Using the CME NOTE: When configuring the PS Handover Between GSM and LTE Based on Coverage feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 97. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 97 Configuring parameters on the CME SN

MO

NE

Parameter Name

Parameter ID


1

GCELLGPRS

BSC6900/BSC6910

Support Out LTE Inter cell PS Handover

SPTLTEOUTBSCPSHO Yes

BSC6900/BSC6910

Support In LTE Intercell PS Handover

SPTLTEINBSCPSHO

9.7 Deploying PS Handover Between GSM and LTE Based on Quality 9.7.1 Deployment Requirements Table 98 Deployment requirements Aspect

Requirement

Related features


BSC

None

BTS

None

GSM networking

None

MS

MSs support PS Handover Between GSM and LTE Based on Quality.

MSC

None

License



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Aspect

Requirement

Others

The SGSN supports PS handover between GSM and LTE. The SGSN supports the packet flow context (PFC) procedure. A GSM cell is configured with a neighboring LTE cell, and the neighboring LTE cell supports cell reselection. NOTE: To add an external LTE cell and enable the LTE cell reselection, perform the following steps: 1. Run the ADD GEXTLTECELL command to add an external LTE cell. In this step, set EUTRAN Cell Type based on actual conditions. 2. Run the SET GCELLHOBASIC command with LTE Cell Reselection Allowed set to YES(Yes). An LTE cell is configured with a neighboring GSM cell. In addition, the LTE cell supports PS Handover Between GSM and LTE Based on Quality.


9.7.3 Activation Using MML Commands Activating PS handover from GSM to LTE based on quality On the BSC LMT, perform the following steps: 1. Run the SET GCELLGPRS command with its parameters set as follows: Set GPRS to SupportAsInnPcu(Support as builtin PCU). Set Support NC2 to YES(Yes). Set Support Out LTE Intercell PS Handover to SUPPORT(Support). 2. Run the SET GCELLPSBASE command with Network Control Mode set to NC2(NC2). 3. Run the SET GCELLNC2PARA command. In this step, set Cell Urgent Reselection Allowed to PERMIT(Permit), and set the following parameters according to onsite requirements: MS Rx Quality Statistic Threshold Cell Rx Quality Worsen Ratio Threshold EDGE GMSK Quality Threshold EDGE 8PSK Quality Threshold Set GPRS Quality Threshold to an appropriate value, for example, 5. Cell Reselection Level Threshold Cell Reselection Hysteresis Cell Penalty Level Cell Penalty Duration. Allowed Measure Report Missed Number Filter Window Size Cell Reselect Interval 4. Run the SET GCELLPRIEUTRANSYS command with EUTRAN Priority set to 7. 5. Run the SET GCELL2GBA1 command with 2G BA1 Neighboring Cell Optimization Switch set to ON(On). 6. Run the SET GCELLHO2GBA2command with 2G BA2 Neighboring Cell Optimization Switch set to ON(On). Activating PS handover from LTE to GSM based on quality On the BSC LMT, run the SET GCELLGPRS command with GPRS set to SupportAsInnPcu(Support as builtin PCU) and Support In LTE Inter cell PS Handover set to SUPPORT(Support).

MML Command Examples //Activating PS handover from GSM to LTE based on quality SET GCELLGPRS: IDTYPE=BYID, CELLID=0, GPRS=SupportAsInnPcu, NC2SPT=YES, SPTLTEOUTBSCPSHO=SUPPORT; SET GCELLPSBASE: IDTYPE=BYID, CELLID=0, NCO=NC2; SET GCELLNC2PARA: IDTYPE=BYID, CELLID=0, MINACCRXLEV=15, RESELHYST=6, PENALTYRXLEV=30, PENALTYLASTTM=10, ALLOWEDMEASRPTMISSEDNUM=4, FILTERWNDSIZE=6, MSRXQUALSTATTHRSH=200, CELLRXQUALWORSENRATIOTHRSH=30, URGENTRESELALLOW=PERMIT, RESELINTERVAL=2, EGPRSBEPLIMITGMSK=7, EGPRSBEPLIMIT8PSK=16, GPRSRXQUALLIMIT=5; SET GCELLPRIEUTRANSYS: IDTYPE=BYID, CELLID=0, EUTRANPRI=7; SET GCELL2GBA1: IDTYPE=BYID, CELLID=0, CELL2GBA1OPTSW=ON; SET GCELLHO2GBA2: IDTYPE=BYID, CELLID=0, CELL2GBA2OPTSW=ON;


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//Activating PS handover from LTE to GSM based on quality SN Managed Object (MO) NE Parameter Name Parameter ID SET GCELLGPRS: IDTYPE=BYID, CELLID=0, GPRS=SupportAsInnPcu, SPTLTEINBSCPSHO=SUPPORT;

Using the CME


NOTE: When configuring the PS Handover Between GSM and LTE Based on Quality feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 99 or Table 910. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Activating PS handover from GSM to LTE based on quality Table 99 Configuring parameters on the CME SN

Managed Object (MO)

NE

Parameter Name

Parameter ID


1

GCELLGPRS

BSC6900/BSC6910

GPRS

GPRS

Yes

Support NC2

NC2SPT

Support Out LTE Intercell PS Handover

SPTLTEOUTBSCPSHO

2

GCELLPSBASE

BSC6900/BSC6910

Network Control Mode

NCO

Yes

3

GCELLNC2PARA

BSC6900/BSC6910

Cell Urgent Reselection Allowed

URGENTRESELALLOW

Yes

MS Rx Quality MSRXQUALSTATTHRSH Statistic Threshold Cell Rx Quality Worsen Ratio Threshold

CELLRXQUALWORSENRATIOTHRSH

EDGE GMSK Quality Threshold

EGPRSBEPLIMITGMSK

EDGE 8PSK Quality Threshold

EGPRSBEPLIMIT8PSK

GPRS Quality Threshold

GPRSRXQUALLIMIT

Cell Reselection Level Threshold

MINACCRXLEV


RESELHYST

Cell Penalty Level

PENALTYRXLEV


PENALTYLASTTM



Filter Window Size FILTERWNDSIZE Cell Reselect Interval

RESELINTERVAL

4


EUTRAN Priority

EUTRANPRI

Yes

5

GCELL2GBA1


CELL2GBA1OPTSW

No

BSC6900/BSC6910


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MO Managed Object (MO)

6

GCELLHO2GBA2

NE NE

BSC6900/BSC6910

Parameter Name Parameter Name Parameter ID Parameter ID


Configurable in CME Configurable in Batch Modification CME Batch CenterModification Center

CELL2GBA2OPTSW

No

Activating PS handover from LTE to GSM based on quality Table 910 Configuring parameters on the CME SN

MO

NE

Parameter Name

Parameter ID


1

GCELLGPRS

BSC6900/BSC6910

GPRS

GPRS

Yes

BSC6900/BSC6910


SPTLTEINBSCPSHO

9.7.4 Activation Observation Verifying PS handover from GSM to LTE based on quality 1. On the BSC LMT, run the SET GCELLNC2PARA command with Cell Normal Reselection Allowed, Cell Load Reselection Allowed, and Cell Service Reselection Allowed set to FORBID(Forbid). 2. Use an MS that camps on the serving GSM cell to upload or download data. On the BSC LMT, trace PS messages over the Um interface and PTP messages over the Gb interface. 3. Move the MS or increase the power of the target LTE cell so that the receive level of the target LTE cell is higher than that of the serving GSM cell. 4. Check the messages traced over the Um and Gb interfaces. If all the following messages are available, the PS handover from GSM to LTE based on quality has been enabled: PS Handover Command message over the Um interface: sent from the BSC to MSs PS Handover Required message over the Gb interface: sent from the BSC to the SGSN PS Handover Required Acknowledge message over the Gb interface: sent from the SGSN to the BSC Verifying PS handover from LTE to GSM based on quality 1. Use an MS that camps on the serving LTE cell to upload or download data. On the BSC LMT, trace PTP messages over the Gb interface for the target GSM cell. 2. Move the MS or increase the power of the target GSM cell so that the receive level of the target GSM cell is higher than that of the serving LTE cell. 3. Check the PS services over the Um interface and the messages traced over the Gb interface in the target GSM cell. If all the following messages over the Gb interface are available, the PS handover from LTE to GSM based on quality has been enabled. PS Handover Request message: sent from the SGSN to the BSC PS Handover Request Acknowledge message: sent from the BSC to the SGSN PS Handover Complete message: sent from the BSC to the SGSN NOTE: Before the verification, set Support In LTE Intercell PS Handover to UNSUPPORT(Not Support) for all cells except the target GSM cell. After the verification, set Support In LTE Intercell PS Handover back to SUPPORT(Support) for these cells.

9.7.5 Deactivation Using MML Commands On the BSC LMT, run the SET GCELLGPRS command with its parameters set as follows: Set GPRS to SupportAsInnPcu(Support as builtin PCU). Set Support In LTE Intercell PS Handover to UNSUPPORT(Not Support). Set Support Out LTE Intercell PS Handover to UNSUPPORT(Not Support).


Using the CME NOTE: When configuring the PS Handover Between GSM and LTE Based on Quality feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration)


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Set parameters on the CME configuration interface according to the operation sequence described in Table 911. For the method of performing the SN MO NE Parameter Name Parameter ID Configurable in CME Aspect Requirement CME single configuration, see CME Single Configuration Operation Guide. Batch Modification 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) Center To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 911 Configuring parameters on the CME SN

MO

NE

Parameter Name

Parameter ID


1

GCELLGPRS

BSC6900/BSC6910



BSC6900/BSC6910


SPTLTEINBSCPSHO

9.8 Deploying PS Handover Between GSM and LTE Based on Cell Load 9.8.1 Deployment Requirements Table 912 Deployment requirements Aspect

Requirement

Related features


BSC

None

BTS

None

GSM networking

None

MS

MSs support PS Handover Between GSM and LTE Based on Cell Load.

MSC

None

License



9.8.3 Activation Using MML Commands Activating PS handover from GSM to LTE based on cell load On the BSC LMT, perform the following steps: 1. Run the SET GCELLGPRS command with its parameters set as follows: Set GPRS to SupportAsInnPcu(Support as builtin PCU). Set Support NC2 to YES(Yes). Set Support Out LTE Intercell PS Handover to SUPPORT(Support). 2. Run the SET GCELLPSBASE command with Network Control Mode set to NC2(NC2). 3. Run the SET GCELLNC2PARA command. In this step, set Cell Load Reselection Allowed to PERMIT(Permit), and set the following parameters according to onsite requirements: Load Reselection Start Threshold Load Reselection Receive Threshold Load Reselect Level Threshold Cell Reselection Level Threshold Cell Reselection Hysteresis Cell Penalty Level Cell Penalty Duration Allowed Measure Report Missed Number Filter Window Size Cell Reselect Interval 4. Run the SET GCELLPRIEUTRANSYS command with EUTRAN Priority set to 7. 5. Run the SET GCELL2GBA1 command with 2G BA1 Neighboring Cell Optimization Switch set to ON(On). 6. Run the SET GCELLHO2GBA2 command with 2G BA2 Neighboring Cell Optimization Switch set to ON(On). Activating PS handover from LTE to GSM based on cell load


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On the BSC LMT, run the SET GCELLGPRS command with GPRS set to SupportAsInnPcu(Support as builtin PCU) and Support In LTE Inter SN Managed Object (MO) NE Parameter Name Parameter ID Configurable in cell PS Handover set to SUPPORT(Support). CME Batch Modification MML Command Examples Center //Activating PS handover from GSM to LTE based on cell load SET GCELLGPRS: IDTYPE=BYID, CELLID=0, GPRS=SupportAsInnPcu, NC2SPT=YES, SPTLTEOUTBSCPSHO=SUPPORT; SET GCELLPSBASE: IDTYPE=BYID, CELLID=0, NCO=NC2; SET GCELLNC2PARA: IDTYPE=BYID, CELLID=0, MINACCRXLEV=15, RESELHYST=6, PENALTYRXLEV=30, PENALTYLASTTM=10, ALLOWEDMEASRPTMISSEDNUM=4, FILTERWNDSIZE=6, LOADRESELSTARTTHRSH=85, LOADRESELRXTHRSH=6, LOADRESELALLOW=PERMIT, RESELINTERVAL=2, LOADRESELMAXRXLEV=40; SET GCELLPRIEUTRANSYS: IDTYPE=BYID, CELLID=0, EUTRANPRI=7; SET GCELL2GBA1: IDTYPE=BYID, CELLID=0, CELL2GBA1OPTSW=ON; SET GCELLHO2GBA2: IDTYPE=BYID, CELLID=0, CELL2GBA2OPTSW=ON; //Activating PS handover from LTE to GSM based on cell load SET GCELLGPRS: IDTYPE=BYID, CELLID=0, GPRS=SupportAsInnPcu, SPTLTEINBSCPSHO=SUPPORT;

Using the CME NOTE: When configuring the PS Handover Between GSM and LTE Based on Cell Load feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 913 or Table 914. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Activating PS handover from GSM to LTE based on cell load Table 913 Configuring parameters on the CME SN

Managed Object (MO)

NE

Parameter Name

Parameter ID


1

GCELLGPRS

BSC6900/BSC6910

GPRS

GPRS

Yes

Support NC2

NC2SPT

Support Out LTE Intercell PS Handover

SPTLTEOUTBSCPSHO

2

GCELLPSBASE

BSC6900/BSC6910


NCO

Yes

3

GCELLNC2PARA

BSC6900/BSC6910

Cell Load Reselection Allowed

LOADRESELALLOW

Yes

Load Reselection Start Threshold

LOADRESELSTARTTHRSH

Load Reselection Receive Threshold

LOADRESELRXTHRSH

Load Reselect Level Threshold

LOADRESELMAXRXLEV

Cell Reselection Level Threshold

MINACCRXLEV


RESELHYST

Cell Penalty Level

PENALTYRXLEV


PENALTYLASTTM



Filter Window Size

FILTERWNDSIZE


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MO Managed Object (MO) NENE

Parameter Name Parameter Name

Parameter ID Parameter ID

Cell Reselect Interval

RESELINTERVAL

Configurable in CME Configurable in Batch Modification CME Batch Center Modification Center

4


EUTRAN Priority

EUTRANPRI

Yes

5

GCELL2GBA1

BSC6900/BSC6910


CELL2GBA1OPTSW

No

6

GCELLHO2GBA2

BSC6900/BSC6910


CELL2GBA2OPTSW

No

Activating PS handover from LTE to GSM based on cell load Table 914 Configuring parameters on the CME SN

MO

NE

Parameter Name

Parameter ID


1

GCELLGPRS

BSC6900/BSC6910

GPRS

GPRS

Yes

BSC6900/BSC6910


SPTLTEINBSCPSHO

9.8.4 Activation Observation Verifying PS handover from GSM to LTE based on cell load On the BSC LMT, perform the following steps: 1. On the BSC LMT, run the SET GCELLNC2PARA command with Cell Normal Reselection Allowed, Cell Urgent Reselection Allowed, and Cell Service Reselection Allowed set to FORBID(Forbid). 2. Use an MS that camps on the serving GSM cell to upload or download data. On the BSC LMT, trace PS messages over the Um interface and PTP messages over the Gb interface. 3. Use more MSs to perform GPRS services in the serving cell. 4. Check the messages traced over the Um and Gb interfaces. If all the following messages are available, the PS handover from GSM to LTE based on cell load has been enabled: PS Handover Command message over the Um interface: sent from the BSC to MSs PS Handover Required message over the Gb interface: sent from the BSC to the SGSN PS Handover Required Acknowledge message over the Gb interface: sent from the SGSN to the BSC Verifying PS handover from LTE to GSM based on cell load 1. Use an MS that camps on the serving LTE cell to upload or download data. On the BSC LMT, trace PTP messages over the Gb interface for the target GSM cell. 2. Use more MSs to perform GPRS services in the serving cell. 3. Check the PS services over the Um interface and the messages traced over the Gb interface in the target GSM cell. If all the following messages are available, the PS handover from LTE to GSM based on cell load has been enabled. PS Handover Request message: sent from the SGSN to the BSC PS Handover Request Acknowledge message: sent from the BSC to the SGSN PS Handover Complete message: sent from the BSC to the SGSN NOTE: Before the verification, set Support In LTE Intercell PS Handover to UNSUPPORT(Not Support) for all cells except the target GSM cell. After the verification, set Support In LTE Intercell PS Handover back to SUPPORT(Support) for these cells.

9.8.5 Deactivation Using MML Commands On the BSC LMT, run the SET GCELLGPRS command with its parameters set as follows: Set GPRS to SupportAsInnPcu(Support as builtin PCU). Set Support In LTE Intercell PS Handover to UNSUPPORT(Not Support). Set Support Out LTE Intercell PS Handover to UNSUPPORT(Not Support).



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Using the CME Aspect SN

MO

NE

Requirement Parameter Name

Parameter ID

NOTE:


When configuring the PS Handover Between GSM and LTE Based on Cell Load feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 915. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 915 Configuring parameters on the CME SN

MO

NE

Parameter Name

Parameter ID


1

GCELLGPRS

BSC6900/BSC6910



BSC6900/BSC6910


SPTLTEINBSCPSHO

9.9 Deploying PS Handover Between GSM and LTE Based on Mode Priority None.

9.10 Deploying GSM/LTE Service Based PS Handover 9.10.1 Deployment Requirements Table 916 Deployment requirements Aspect

Requirement

Related features


BSC

None

BTS

None

GSM networking

None

MS

MSs support PS Handover Between GSM and LTE Based on Cell Load.

MSC

None

License



9.10.3 Activation Using MML Commands Activating PS handover from GSM to LTE based on service On the BSC LMT, perform the following steps: 1. Run the SET GCELLGPRS command with its parameters set as follows: Set GPRS to SupportAsInnPcu(Support as builtin PCU). Set Support NC2 to YES(Yes). Set Support Out LTE Intercell PS Handover to SUPPORT(Support). 2. Run the SET GCELLPSBASE command with Network Control Mode set to NC2(NC2). 3. Run the SET GCELLNC2PARA command with Cell Service Reselection Allowed set to PERMIT(Permit). 4. Run the SET GCELL2GBA1 command with 2G BA1 Neighboring Cell Optimization Switch set to ON(On). 5. Run the SET GCELLHO2GBA2 command with 2G BA2 Neighboring Cell Optimization Switch set to ON(On). Activating PS handover from LTE to GSM based on service On the BSC LMT, run the SET GCELLGPRS command with GPRS set to SupportAsInnPcu(Support as builtin PCU) and Support In LTE Inter cell PS Handover set to SUPPORT(Support).


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MML Command Examples SN

Managed Object (MO) NE MO NE

Parameter Name Parameter Name

Parameter ID Parameter ID

SET GCELLGPRS: IDTYPE=BYID, CELLID=0, GPRS=SupportAsInnPcu, NC2SPT=YES, SPTLTEOUTBSCPSHO=SUPPORT; SET GCELLPSBASE: IDTYPE=BYID, CELLID=0, NCO=NC2;


SET GCELLNC2PARA: IDTYPE=BYID, CELLID=0, TrafficReselAllow=PERMIT; SET GCELLGPRS: IDTYPE=BYID, CELLID=0, GPRS=SupportAsInnPcu, SPTLTEINBSCPSHO=SUPPORT; SET GCELL2GBA1: IDTYPE=BYID, CELLID=0, CELL2GBA1OPTSW=ON; SET GCELLHO2GBA2: IDTYPE=BYID, CELLID=0, CELL2GBA2OPTSW=ON;

Using the CME When configuring the GSM/LTE Service Based PS Handover feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 917 or Table 918. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Activating PS handover from GSM to LTE based on service Table 917 Configuring parameters on the CME SN

Managed Object (MO) NE

Parameter Name

Parameter ID


1

GCELLGPRS

GPRS

GPRS

Yes

Support NC2

NC2SPT


SPTLTEOUTBSCPSHO

BSC6900/BSC6910

2

GCELLPSBASE

BSC6900/BSC6910


NCO

Yes

3

GCELLNC2PARA

BSC6900/BSC6910

Cell Service Reselection Allowed

TrafficReselAllow

Yes

4

GCELL2GBA1

BSC6900/BSC6910


CELL2GBA1OPTSW

No

5

GCELLHO2GBA2

BSC6900/BSC6910


CELL2GBA2OPTSW

No

Activating PS handover from LTE to GSM based on service Table 918 Configuring parameters on the CME SN

MO

NE

Parameter Name

Parameter ID


1

GCELLGPRS

BSC6900/BSC6910

GPRS

GPRS

Yes

BSC6900/BSC6910

Support In LTE Inter cell PS Handover

SPTLTEINBSCPSHO

9.10.4 Activation Observation Verifying PS handover from GSM to LTE based on service 1. On the BSC LMT, run the SET GCELLNC2PARA command with Cell Normal Reselection Allowed, Cell Urgent Reselection Allowed, and Cell Load Reselection Allowed set to FORBID(Forbid). 2. Use an MS that camps on the serving GSM cell to upload or download data. On the BSC LMT, trace PS messages over the Um interface and PTP messages over the Gb interface. 3. Inform an engineer at the NSE to configure the subscription information of this MS to ensure that the LTE network is preferentially selected. NOTE: The DLUNITDATA message sent from the SGSN to the BSC can be traced over the Gb interface. This message contains the Service EUTRAN CCO IE whose value is "Network initiated cell change order to EUTRAN or PS handover to EUTRAN procedure should be performed." 4. Check the messages traced over the Um and Gb interfaces. If all the following messages are available, the PS handover from GSM to LTE based on service has been enabled: PS Handover Required message over the Gb interface: sent from the BSC to the SGSN


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Interoperability Between GSM and LTE Feature Parameter Description PS Handover Required Acknowledge message over the Gb interface: sent from the SGSN to the BSC Requirement MO NE Parameter Name Parameter ID PS Handover Command message over the Um interface: sent from the BSC to MSs

Aspect SN

Verifying PS handover from LTE to GSM based on service


1. Use an MS that camps on the serving LTE cell to upload or download data. On the BSC LMT, trace PTP messages over the Gb interface for the target GSM cell. 2. Inform an engineer at the LTE side to trigger an LTEtoGSM handover for this service. 3. Check the PS services over the Um interface and the messages traced over the Gb interface in the target GSM cell. If all the following messages are available, the PS handover from LTE to GSM based on service has been enabled: PS Handover Request message: sent from the SGSN to the BSC PS Handover Request Acknowledge message: sent from the BSC to the SGSN PS Handover Complete message: sent from the BSC to the SGSN NOTE: Before the verification, set Support In LTE Intercell PS Handover to UNSUPPORT(Not Support) for all cells except the target GSM cell. After the verification, set Support In LTE Intercell PS Handover back to SUPPORT(Support) for these cells.

9.10.5 Deactivation Using MML Commands On the BSC LMT, run the SET GCELLGPRS command with Support Out LTE Intercell PS Handover and Support In LTE Intercell PS Handover set to UNSUPPORT(Not Support).


Using the CME When configuring the GSM/LTE Service Based PS Handover feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 919. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 919 Configuring parameters on the CME SN

MO

NE

Parameter Name

Parameter ID


1

GCELLGPRS

BSC6900/BSC6910



BSC6900/BSC6910


SPTLTEINBSCPSHO

9.11 Deploying eNC2 Between GSM and LTE 9.11.1 Deployment Requirements Table 920 Deployment requirements Aspect

Requirement

Related features


BSC

BSC6900 The BSC6900 is configured with the DPU board that supports a builtin packet control unit (PCU). BSC6910 None

BTS

None

GSM networking

None

MS

None


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Interoperability Between GSM and LTE Feature Parameter Description Managed Object (MO)

NE

MSC

Requirement Parameter Name Parameter ID

Configurable in CME Batch Modification Center The license controlling this feature has been activated. For details on how to activate the license, see License Management Feature Parameter Description. For details about license items, see License Control Item Description. None

License

9.11.2 Activation Using MML Commands On the BSC LMT, perform the following steps: 1. Run the SET GCELLGPRS command with its parameters set as follows: Set GPRS to SupportAsInnPcu(Support as builtin PCU). Set Support NC2 to YES(Yes). Set Support eNC2 to YES(Yes). 2. Run the SET GCELLPSBASE command with Network Control Mode set to NC2(NC2). 3. Run the SET GCELLNC2PARA command with its parameters set as follows: SetCell Service Reselection Allowed to PERMIT(Permit) to enable the servicebased cell reselection algorithm. SetCell Urgent Reselection Allowed to PERMIT(Permit) to enable the qualitybased cell reselection algorithm. SetCell Load Reselection Allowed to PERMIT(Permit) to enable the loadbased cell reselection algorithm. SetCell Normal Reselection Allowed to PERMIT(Permit) to enable the coveragebased cell reselection algorithm. Set other cell reselection parameters according to network planning.. 4. Run the SET GCELLPRIEUTRANSYS command with EUTRAN Priority set to 7. 5. Run the SET GCELL2GBA1 command with 2G BA1 Neighboring Cell Optimization Switch set to ON(On). 6. Run the SET GCELLHO2GBA2 command with 2G BA2 Neighboring Cell Optimization Switch set to ON(On).

MML Command Examples SET GCELLGPRS: IDTYPE=BYID, CELLID=0, GPRS=SupportAsInnPcu, NC2SPT=YES, eNC2SPT=YES; SET GCELLPSBASE: IDTYPE=BYID, CELLID=0, NCO=NC2; SET GCELLNC2PARA: IDTYPE=BYID, CELLID=0, URGENTRESELALLOW=PERMIT, LOADRESELALLOW=PERMIT, NORMALRESELALLOW=PERMIT, TRAFFICRESELALLOW=PERMIT; SET GCELLPRIEUTRANSYS: IDTYPE=BYID, CELLID=0, EUTRANPRI=7; SET GCELL2GBA1: IDTYPE=BYID, CELLID=0, CELL2GBA1OPTSW=ON; SET GCELLHO2GBA2: IDTYPE=BYID, CELLID=0, CELL2GBA2OPTSW=ON;

Using the CME When configuring the eNC2 Between GSM and LTE feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 921. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 921 Configuring parameters on the CME SN

Managed Object (MO)

NE

Parameter Name Parameter ID


1

GCELLGPRS

BSC6900/BSC6910

GPRS

GPRS

Yes

Support NC2

NC2SPT

Support eNC2

eNC2SPT

2

GCELLPSBASE

BSC6900/BSC6910


NCO

Yes

3

GCELLNC2PARA

BSC6900/BSC6910

Cell Service Reselection Allowed

TrafficReselAllow

Yes


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Interoperability Between GSM and LTE Feature Parameter Description Managed Object (MO) MO

NENE

Parameter Name Parameter ID Parameter ID

Cell Urgent Reselection Allowed

URGENTRESELALLOW

Cell Load Reselection Allowed

LOADRESELALLOW

Cell Normal Reselection Allowed

NORMALRESELALLOW

Configurable in CME Configurable in Batch Modification CME Batch Center Modification Center

4

GCELLPRIEUTRANSYS

BSC6900/BSC6910

EUTRAN Priority

EUTRANPRI

Yes

5

GCELL2GBA1

BSC6900/BSC6910


CELL2GBA1OPTSW

No

6

GCELLHO2GBA2

BSC6900/BSC6910


CELL2GBA2OPTSW

No

9.11.3 Activation Observation 1. Use an MS that camps on the serving GSM cell to perform GPRS services. On the BSC LMT, trace PS messages over the Um interface. 2. Move the MS or increase the power of the target LTE cell so that the receive level of the target LTE cell is higher than that of the serving GSM cell, or increase the number of MSs in the serving GSM cell. 3. Check the PS messages traced over the Um interface. If both the following messages are available, eNC2 Between GSM and LTE has been enabled: Packet Measurement Report message: periodically sent by an MS to the BSC. Packet Cell Change Order message: sent by the BSC to MSs

9.11.4 Deactivation Using MML Commands On the BSC LMT, run the SET GCELLGPRS command with its parameters set as follows: Set GPRS to SupportAsInnPcu(Support as builtin PCU). Set Support NC2 to NO(No). Set Support eNC2 to NO(No).

MML Command Examples SET GCELLGPRS: IDTYPE=BYID, CELLID=0, GPRS=SupportAsInnPcu, NC2SPT=NO, eNC2SPT=NO;

Using the CME When configuring the eNC2 Between GSM and LTE feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 922. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 922 Configuring parameters on the CME SN

MO

NE

Parameter Name

Parameter ID


1

GCELLGPRS

BSC6900/BSC6910

GPRS

GPRS

Yes

Support NC2

NC2SPT

Support eNC2

eNC2SPT

9.12 Deploying eNACC Between GSM and LTE http://localhost:7890/pages/GEE1231L/Draft%20A/GEE1231L/Draft%20A/resources/enus_bookmap_0001793237.html?ft=0&fe=10&hib=3.5.5&id=ENUS_B…

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9.12.1 Deployment Requirements Aspect Table 923 Deployment requirements

Requirement

Aspect

Requirement

Related features


BSC

BSC6900 The BSC6900 is configured with the DPU board that supports a builtin packet control unit (PCU). BSC6910 The BSC6910 is connected to the eCoordinator if the RIM procedure between the BSC6910 and eCoordinator is required.

BTS

None

GSM networking

None

MS

None

MSC

None

License


Others

The Gb interface is configured. For details about how to configure the Gb interface, see "Configuring the Gb Interface (Gb over FR)" in BSC6900 GSM Initial Configuration Guide or "Configuring the Gb Interface (Gb over IP)" in BSC6910 GSM Initial Configuration Guide. The GSM cell is configured with neighboring LTE cells that allow GSMtoLTE cell reselections. The switches for the RIM procedure are turned on for all NEs involved in the RIM procedure between the BSC and eCoordinator. NOTE: To add a neighboring LTE cell, run the ADD GEXTLTECELL command with EUTRAN Cell Type set to an appropriate value based on the types of surrounding cells. To allow cell reselections from GSM cells to the neighboring LTE cells, run the SET GCELLHOBASIC command with LTE Cell Reselection Allowed set to YES(Yes).

9.12.2 Precautions The eNACC between EUTRAN and GERAN supports only the relocation of MSs from EUTRAN to GERAN. Perform the verification immediately after the activation procedure. Otherwise, the verification cannot be performed.

9.12.3 Activation Using MML Commands 1. (Optional) If the RIM procedure between the BSC and eCoordinator is required, on the BSC LMT, run the MOD BSCPSSOFTPARA command with Support RIM by eCoordinator Switch set to ON(On) on the BSC LMT. 2. (Optional) If the RIM procedure between the BSC and eCoordinator is required, on the eCoordinator , run the SET ECOMMONCTRL command with Process Switch set to RIM_SWITCH(RIM Switch). 3. On the BSC LMT, run the MOD NSE command with RIM Support set to YES(Support).

CAUTION: Perform 4 when the traffic is light because it affects the services of all cells under the NSE. 4. Run the RST SIGBVC command to reset the SIG BVC. 5. Run the SET GCELLGPRS command with Support eNACC set to YES(Yes).

MML Command Examples //Setting Support RIM by eCoordinator Switch to ON(On) if the RIM procedure between the BSC and eCoordinator is required MOD BSCPSSOFTPARA: RimOnEcoSw =ON; //Setting Process Switch to RIM_SWITCH1 if the RIM procedure between the BSC and eCoordinator is required SET ECOMMONCTRL: PROCESSSWITCH=RIM_SWITCH1; MOD NSE: NSEI=0, RIMSUP=YES; RST SIGBVC: NSEI=0; SET GCELLGPRS: IDTYPE=BYID, CELLID=0, GPRS=SupportAsInnPcu, eNACCSPT=YES;

Using the CME (Method 1) NOTE:


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When configuring the GSM/WCDMA Interoperability feature on the CME, you must perform a single configuration first, and then perform batch modifications if SN Managed Object (MO) NE Parameter Name Parameter ID Configurable in CME required. Batch Modification You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging Center out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 924. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 924 Configuring parameters on the CME SN

Managed Object (MO)

NE

Parameter Name

Parameter ID


1

BSCPSSOFTPARA

BSC6900/BSC6910

Support RIM by eCoordinator Switch

RimOnEcoSw

Yes

2

ECOMMONCTRL

BSC6900/BSC6910

Process Switch

PROCESSSWITCH

No

3

NSE

BSC6900/BSC6910

RIM Support

RIMSUP

Yes

4

GCELLGPRS

BSC6900/BSC6910

Support eNACC

eNACCSPT

Yes

NOTE: Run the RST SIGBVC command to reset the SIG BVC. Perform this step when the traffic is light because it affects the services of all cells under the NSE.

Using the CME (Method 2) This feature can be batch activated using the CME. For detailed operations, see the following section in the CME product documentation or online help: CME Management > CME Guidelines > Enhanced Feature Management > Feature Operation and Maintenance.

9.12.4 Activation Observation If the RIM procedure is implemented between the BSC and the SGSN: 1. On the BSC LMT, trace SIG messages over the Gb interface. 2. Check the SIG messages traced over the Gb interface. If both the following messages are available, eNACC Between GSM and LTE has been enabled: RAN INFORMATION REQ message: sent from the SGSN to the BSC RAN INFORMATION message: sent from the BSC to the SGSN If the RIM procedure is implemented between the BSC and the eCoordinator: 1. On the BSC LMT, trace messages over the SG interface. 2. Check the messages traced over the SG interface. If both the following messages are available, eNACC Between GSM and LTE has been enabled: ECO DIRECT INFORMATION TRANSFER(RAN INFORMATION REQ) message: sent from the eCoordinator to the BSC BSC DIRECT INFORMATION TRANSFER (RAN INFORMATION) message: sent from the BSC to the eCoordinator

9.12.5 Deactivation Using MML Commands On the BSC LMT, perform the following steps: 1. (Optional) To disable the RIM procedure between the BSC and the eCoordinator, run the MOD BSCPSSOFTPARA command with Support RIM by eCoordinator Switch set to OFF(Off). 2. Run the MOD NSE command with RIM Support set to NO(No Support).

CAUTION: Perform 3 when the traffic is light because it affects the services of all cells under the NSE. 3. Run the RST SIGBVC command to reset the SIG BVC. 4. Run the SET GCELLGPRS command with Support eNACC set to NO(No).

MML Command Examples //Setting Support RIM by eCoordinator Switch to OFF(Off) to disable the RIM procedure between the BSC and the eCoordinator MOD BSCPSSOFTPARA: RimOnEcoSw =OFF; MOD NSE: NSEI=0, RIMSUP=NO; RST SIGBVC: NSEI=0; SET GCELLGPRS: IDTYPE=BYID, CELLID=0, GPRS=SupportAsInnPcu, eNACCSPT=NO;


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Using the CME SN Aspect

Managed Object (MO)

NE

Requirement Parameter Name

Parameter ID

NOTE:


When configuring the GSM/WCDMA Interoperability feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 925. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 925 Configuring parameters on the CME SN

Managed Object (MO)

NE

Parameter Name

Parameter ID


1

BSCPSSOFTPARA

BSC6900/BSC6910

Support RIM by eCoordinator Switch

RimOnEcoSw

Yes

2

GCELLGPRS

BSC6900/BSC6910

Support eNACC

eNACCSPT

Yes

NOTE: Run the RST SIGBVC command to reset the SIG BVC. Perform this step when the traffic is light because it affects the services of all cells under the NSE.

9.13 Deploying SRVCC 9.13.1 Deployment Requirements Table 926 Deployment requirements Aspect

Requirement

Related features


BSC

None

BTS

None

GSM networking

This feature can only be enabled when the LTE network covers the same area as the GSM network.

MS

MSs support GSM and LTE networks and SRVCC.

MSC

The MSC supports SRVCC.

License

The license controlling this feature has been activated. For details on how to activate the license, see License Management Feature Parameter Description. For details about license items, seeLicense Control Item Description.

Others

The SRVCC feature supports only handovers of speech services from EUTRAN to GERAN. It is available only when the EUTRAN and the GERAN cover the same area.

9.13.2 Activation Using MML Commands On the BSC LMT, run the SET GCELLHOBASIC command with SRVCC Handover Allowed set to YES(Yes) and the following parameters set to the values the same as those on the MSC server: LTE SAI MCC LTE SAI MNC LTE SAI LAC LTE SAI SAC

MML Command Examples SET GCELLHOBASIC: IDTYPE=BYID, CELLID=0, SRVCCHOEN=YES, LTESAIMCC=538, LTESAIMNC=735, LTESAILAC=2497, LTESAISAC=3685;

Using the CME NOTE: When configuring the SRVCC feature on the CME, you must perform a single configuration first, and then perform batch modifications if required.


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You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging SN Managed Object (MO) MO NE Parameter Name Parameter ID Configurable in CME Aspect Requirement out of the parameter setting interface. Batch Modification Center 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 927. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 927 Configuring parameters on the CME SN

Managed Object (MO)

NE

Parameter Name

Parameter ID


1

GCELLHOBASIC

BSC6900/BSC6910

SRVCC Handover Allowed

SRVCCHOEN

Yes

LTE SAI MCC

LTESAIMCC

LTE SAI MNC

LTESAIMNC

LTE SAI LAC

LTESAILAC

LTE SAI SAC

LTESAISAC

9.13.3 Activation Observation 1. On the BSC LMT, run the LST GCELLHOBASIC command to query the values of SRVCC Handover Allowed, LTE SAI MCC, LTE SAI MNC, LTE SAI LAC, and LTE SAI SAC. Expected result: The value of SRVCC Handover Allowed is Yes. The value of LTE SAI MCC, LTE SAI MNC, LTE SAI LAC, and LTE SAI SAC are consistent with the values configured on the MSC server side. 2. On the BSC LMT, doubleclick A Interface Trace to trace messages over the A interface. On the Basic tab page, specify the destination point code (DPC) of the test cell in the DPC(HEX) text box, and select BSSAP in the Trace Type area. On the BSSAP tab page, specify the ID of the test cell in the Cell ID (cell1, cell2, ...cell16): text box. Then, click Submit. 3. After opening the A Interface Trace window, use an MS that camps on an LTE cell to initiate a call. After the call is initiated properly, move the MS to a coverage area with strong GSM signals. Expected result: The Handover Request and Handover Complete messages are traced over the A interface.

9.13.4 Deactivation Using MML Commands Run the SET GCELLHOBASIC command with SRVCC Handover Allowed set to NO(No).

MML Command Examples SET GCELLHOBASIC: IDTYPE=BYID, CELLID=0, SRVCCHOEN=NO;

Using the CME NOTE: When configuring the SRVCC feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 928. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 928 Configuring the parameter on the CME SN

MO

NE

Parameter Name

Parameter ID


1

GCELLHOBASIC

BSC6900/BSC6910

SRVCC Handover Allowed

SRVCCHOEN

Yes

9.14 Deploying Multi Technology Neighbour Cell Based Handover 9.14.1 Deployment Requirements Table 929 Deployment requirements


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Aspect SN Aspect

Managed Object (MO)

NE

Requirement Parameter Name Requirement

Parameter ID


Related features


BSC

None

BTS

None

GSM networking

None

MS

MSs support the PS handover.

MSC

None

License


Others

The SGSN supports the PS handover. Neighboring GSM cells, neighboring UMTS cells, or neighboring LTE cells have been configured.

9.14.2 Precautions The following procedures exemplify the configuration of the serving GSM cell and two neighboring LTE cells. Before performing the following procedures, configure two LTE external cells (cell 1 and cell 2) and the neighboring relationship between the serving GSM cell and the two LTE external cells.

9.14.3 Activation Using MML Commands On the BSC LMT, perform the following steps: 1. Run the MOD GLTENCELL command with its parameters set as follows: Set Index Type to BYID(By Index). Set Source Cell Index to the index of the serving GSM cell. Set Neighbor Cell Index to the index of neighboring LTE cell 1. Set Neighboring Cell Priority to 4. 2. Run the MOD GLTENCELL command with its parameters set as follows: Set Index Type to BYID(By Index). Set Source Cell Index to the index of the serving GSM cell. Set Neighbor Cell Index to the index of neighboring LTE cell 2. Set Neighboring Cell Priority to 5. 3. Run the SET GCELL2GBA1 command with 2G BA1 Neighboring Cell Optimization Switch set to ON(On). 4. Run the SET GCELLHO2GBA2 command with 2G BA2 Neighboring Cell Optimization Switch set to ON(On).

MML Command Examples MOD GLTENCELL: IDTYPE=BYID, SRCLTENCELLID=0, NBRLTENCELLID=9001, NCELLPRI=4; MOD GLTENCELL: IDTYPE=BYID, SRCLTENCELLID=0, NBRLTENCELLID=9002, NCELLPRI=5; SET GCELL2GBA1: IDTYPE=BYID, CELLID=0, CELL2GBA1OPTSW=ON; SET GCELLHO2GBA2: IDTYPE=BYID, CELLID=0, CELL2GBA2OPTSW=ON;

Using the CME NOTE: When configuring the Multi Technology Neighbour Cell Based Handover feature on the CME, you must perform a single configuration first, and then perform batch modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 930. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 930 Configuring parameters on the CME SN

Managed Object (MO)

NE

Parameter Name

Parameter ID



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SN

Managed Object (MO)

NE

Parameter Name

Parameter ID


1

GLTENCELL

BSC6900/BSC6910

Index Type

IDTYPE

No

Source Cell Index

SRCLTENCELLID

Neighbor Cell Index

NBRLTENCELLID

Neighboring Cell Priority

NCELLPRI

Index Type

IDTYPE

Source Cell Index

SRCLTENCELLID

Neighbor Cell Index

NBRLTENCELLID


NCELLPRI

2

GLTENCELL

BSC6900/BSC6910

No

3

GCELL2GBA1

BSC6900/BSC6910

2G BA1 Neighboring Cell CELL2GBA1OPTSW Optimization Switch

No

4

GCELLHO2GBA2

BSC6900/BSC6910

2G BA2 Neighboring Cell CELL2GBA2OPTSW Optimization Switch

No

9.14.4 Activation Observation 1. Use an MS that camps on the serving GSM cell to download data. 2. On the BSC LMT, trace PTP messages over the Gb interface and PS messages over the Um interface. 3. Move the MS to trigger a PS handover. 4. Check the messages traced over the Um and Gb interfaces. If all the following messages are available, the MS has been handed over to neighboring LTE cell 2 to download data: PS Handover Required message over the Gb interface: sent from the BSC to the SGSN. In this message, the value of the Target eNB identifier IE is neighboring LTE cell 2. PS Handover Required Acknowledge message over the Gb interface: sent from the SGSN to the BSC PS Handover Command message over the Um interface: sent from the BSC to MSs 5. Run the MOD GLTENCELL command with its parameters set as follows: Set Index Type to BYID(By Index). Set Source Cell Index to the index of the serving GSM cell. Set Neighbor Cell Index to the index of neighboring LTE cell 2. Set Neighboring Cell Priority to 2. 6. Use the MS that camps on the serving GSM cell to download data. Then, move the MS to trigger a PS handover. 7. Check the messages traced over the Um and Gb interfaces. If all the following messages are available, the MS has been handed over to neighboring LTE cell 1 to download data. PS Handover Required message over the Gb interface: sent from the BSC to the SGSN. In this message, the value of the Target eNB identifier IE is neighboring LTE cell 1. PS Handover Required Acknowledge message over the Gb interface: sent from the SGSN to the BSC. PS Handover Command message over the Um interface: sent from the BSC to MSs.

9.14.5 Deactivation Using MML Commands 1. Run the MOD GLTENCELL command with its parameters set as follows: Set Index Type to BYID(By Index). Set Source Cell Index to the index of the serving GSM cell. Set Neighbor Cell Index to the index of neighboring LTE cell 1. Set Neighboring Cell Priority to 255. 2. Run the MOD GLTENCELL command with its parameters set as follows: Set Index Type to BYID(By Index). Set Source Cell Index to the index of the serving GSM cell. Set Neighbor Cell Index to the index of neighboring LTE cell 2. Set Neighboring Cell Priority to 255.

MML Command Examples MOD GLTENCELL: IDTYPE=BYID, SRCLTENCELLID=0, NBRLTENCELLID=9001, NCELLPRI=255; MOD GLTENCELL: IDTYPE=BYID, SRCLTENCELLID=0, NBRLTENCELLID=9002, NCELLPRI=255;

Using the CME


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Parameter ID NE MML Command Feature Feature Name Parameter ID Description SN NOTE: MO NE Parameter Name Configurable in CME ID Batch Modification When configuring the Multi Technology Neighbour Cell Based Handover feature on the CME, you must perform a single configuration first, and then perform batch Center modifications if required. You must perform a single configuration for a parameter before batch modifications of the parameter. You are advised to perform batch modifications before logging out of the parameter setting interface. 1. Configure a single object on the CME. (CME single configuration) Set parameters on the CME configuration interface according to the operation sequence described in Table 931. For the method of performing the CME single configuration, see CME Single Configuration Operation Guide. 2. (Optional) Modify objects in batches on the CME. (CME batch modification center) To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the CME configuration interface to start the batch modification wizard. For the method of performing batch modifications through the CME batch modification center, press F1 on the wizard interface to obtain online help. Table 931 Configuring parameters on the CME SN

MO

NE

Parameter Name

Parameter ID


1

GLTENCELL

BSC6900/BSC6910

Index Type

IDTYPE

No

Source Cell Index

SRCLTENCELLID

Neighbor Cell Index

NBRLTENCELLID


NCELLPRI

Index Type

IDTYPE

Source Cell Index

SRCLTENCELLID

Neighbor Cell Index

NBRLTENCELLID


NCELLPRI

2

GLTENCELL

BSC6900/BSC6910

No

9.15 Performance Optimization None

9.16 Troubleshooting None

10 Parameters Table 101 Parameters Parameter ID

NE

MML Command

Feature ID

Feature Name Description

PENALTYRXLEV

BSC6900

SET GCELLNC2PARA

GBFD 114301 GBFD 511310 GBFD 511303 GBFD 511302 GBFD 511306 GBFD 116201 GBFD 511304

GSM/WCDMA Interoperability Multi Technology Neighbour Cell Based Handover PS Handover Between GSM and LTE Based on Quality PS Handover Between GSM and LTE Based on Coverage GSM/LTE Service Based PS Handover Network Controlled Cell Reselection (NC2) PS Handover Between GSM and LTE Based on Cell Load

Meaning: When the cell reselection failure message is received or the load cell reselection is initiated, the "Cell Penalty Level" is subtracted from the receive level of the target cell to avoid that cell reselection failure occurs repeatedly or that multiple MSs are reselected to the same target cell. This parameter is valid only within "Cell Penalty Duration". GUI Value Range: 0~63 Unit: None Actual Value Range: 0~63 Default Value: 30


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Parameter ID

NE

MML Command

Feature ID


PENALTYRXLEV

BSC6910

SET GCELLNC2PARA


GSM/WCDMA Interoperability Multi Technology Neighbour Cell Based Handover PS Handover Between GSM and LTE Based on Quality PS Handover Between GSM and LTE Based on Coverage GSM/LTE Service Based PS Handover Network Controlled Cell Reselection (NC2) PS Handover Between GSM and LTE Based on Cell Load

Meaning: When the cell reselection failure message is received or the load cell reselection is initiated, the "Cell Penalty Level" is subtracted from the receive level of the target cell to avoid that cell reselection failure occurs repeatedly or that multiple MSs are reselected to the same target cell. This parameter is valid only within "Cell Penalty Duration". GUI Value Range: 0~63 Unit: None Actual Value Range: 0~63 Default Value: 30

FASTRETURNMEASSPT

BSC6900

SET GBFD GCELLPRIEUTRANSYS 511312

Fast LTE Reselection at 2G CS Call Release

Meaning: Method of fast reselection to neighboring LTE cells. If this parameter is set to ON, MI contains the frequencies and measurement information of neighboring LTE cells, and the BSC selects an neighboring LTE cell based on the measurement result of the MS. If this parameter is set to OFF, the BSC selects the configured neighboring LTE cell.This parameter is invalid for SRVCC calls when the SRVCC Fast Reselect Meas Optimize Switch parameter is set to ON(On). GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

FASTRETURNMEASSPT

BSC6910



Meaning: Method of fast reselection to neighboring LTE cells. If this parameter is set to ON, MI contains the frequencies and measurement information of neighboring LTE cells, and the BSC selects an neighboring LTE cell based on the measurement result of the MS. If this parameter is set to OFF, the BSC selects the configured neighboring LTE cell.This parameter is invalid for SRVCC calls when the SRVCC Fast Reselect Meas Optimize Switch parameter is set to ON(On). GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

DecodeCSFBInd

BSC6900

SET AITFOTHPARA


Meaning: Whether to determine a CSFB call based on the CSFB Indication information element (IE) in the Clear Command message and prohibit a nonCSFB call from performing a quick reselection to a neighboring LTE cell. If this parameter is set to ON, the BSC determines that the call is a CSFB call when the Clear Command message carries the CSFB Indication IE. Furthermore, if the quick reselection function is enabled, quick reselection is performed only on CSFB calls. If this parameter is set to OFF and the quick reselection function is enabled, quick reselection is performed on all GSMLTE dualband MSs. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

GBFD 511312


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Parameter ID

NE

MML Command

Feature ID


DecodeCSFBInd

BSC6910

SET AITFOTHPARA

GBFD 511312


Meaning: Whether to determine a CSFB call based on the CSFB Indication information element (IE) in the Clear Command message and prohibit a nonCSFB call from performing a quick reselection to a neighboring LTE cell. If this parameter is set to ON, the BSC determines that the call is a CSFB call when the Clear Command message carries the CSFB Indication IE. Furthermore, if the quick reselection function is enabled, quick reselection is performed only on CSFB calls. If this parameter is set to OFF and the quick reselection function is enabled, quick reselection is performed on all GSMLTE dualband MSs. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

SI2QUATEROPTFORLTESW

BSC6900



Meaning: Whether to optimize the neihboring LTE cell information in SI 2Quarter. When this parameter is set to ON, the neighboring LTE cell information is encoded in dense coding mode, thereby decreasing the number of SI 2Quater messages. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

SI2QUATEROPTFORLTESW

BSC6910



Meaning: Whether to optimize the neihboring LTE cell information in SI 2Quarter. When this parameter is set to ON, the neighboring LTE cell information is encoded in dense coding mode, thereby decreasing the number of SI 2Quater messages. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

FASTRETURNFILTERSW

BSC6900



Meaning: Whether to filter neighboring LTE cells of an MOCNenabled cell based on shared handover areas (SHAs) of operators. When this parameter is set to ON(On), the BSC filters neighboring LTE cells based on the SHAs of different operators and sends candidate neighboring LTE cells for cell reselection to MSs. When this parameter is set to OFF(Off), the BSC does not filter neighboring LTE cells based on the SHAs of different operators but sends MSs candidate neighboring LTE cells for cell reselection based on configured neighboring cells. This parameter is invalid for SRVCC calls when the SRVCC Fast Reselect Meas Optimize Switch parameter is set to ON(On). GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: ON(On)


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Parameter ID

NE

MML Command

Feature ID

FASTRETURNFILTERSW

BSC6910



Meaning: Whether to filter neighboring LTE cells of an MOCNenabled cell based on shared handover areas (SHAs) of operators. When this parameter is set to ON(On), the BSC filters neighboring LTE cells based on the SHAs of different operators and sends candidate neighboring LTE cells for cell reselection to MSs. When this parameter is set to OFF(Off), the BSC does not filter neighboring LTE cells based on the SHAs of different operators but sends MSs candidate neighboring LTE cells for cell reselection based on configured neighboring cells. This parameter is invalid for SRVCC calls when the SRVCC Fast Reselect Meas Optimize Switch parameter is set to ON(On). GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: ON(On)

CELL2GBA1OPTSW

BSC6900

SET GCELL2GBA1

System Information Sending

Meaning: As stipulated in 3GPP TS 44.018, if a cell is configured with neighboring UMTS cells, the cell can be configured with a maximum of 31 neighboring GSM cell frequencies; if a cell is configured with neighboring LTE cells, the cell can be configured with a maximum of (31 Number of neighboring LTE cell frequencies) neighboring GSM cell frequencies. If the number of configured neighboring GSM cell frequencies violates this stipulation, the reporting of information about neighboring UMTS or LTE cells will fail. When a cell is configured with neighboring LTE cells, this parameter indicates whether the configuration of neighboring GSM cell frequencies takes the neighboring LTE cells into account. If this parameter is set to ON, the maximum number of neighboring GSM cell frequencies in the GSM BA1 list is (31 Number of neighboring LTE cell frequencies). The maximum number of neighboring LTE cell frequencies is 6 if "CELL2GBA1OPTENHSW" is set to ON or is 3 if "CELL2GBA1OPTENHSW" is set to OFF. If this parameter is set to OFF, the maximum number of neighboring GSM cell frequencies in the GSM BA1 list is 31 (neighboring UMTS cells are configured) or 32 (neighboring UMTS cells are not configured). GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: ON(On)

GBFD 111101



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Parameter ID

NE

MML Command

Feature ID


CELL2GBA1OPTSW

BSC6910

SET GCELL2GBA1

GBFD 111101


Meaning: As stipulated in 3GPP TS 44.018, if a cell is configured with neighboring UMTS cells, the cell can be configured with a maximum of 31 neighboring GSM cell frequencies; if a cell is configured with neighboring LTE cells, the cell can be configured with a maximum of (31 Number of neighboring LTE cell frequencies) neighboring GSM cell frequencies. If the number of configured neighboring GSM cell frequencies violates this stipulation, the reporting of information about neighboring UMTS or LTE cells will fail. When a cell is configured with neighboring LTE cells, this parameter indicates whether the configuration of neighboring GSM cell frequencies takes the neighboring LTE cells into account. If this parameter is set to ON, the maximum number of neighboring GSM cell frequencies in the GSM BA1 list is (31 Number of neighboring LTE cell frequencies). The maximum number of neighboring LTE cell frequencies is 6 if "CELL2GBA1OPTENHSW" is set to ON or is 3 if "CELL2GBA1OPTENHSW" is set to OFF. If this parameter is set to OFF, the maximum number of neighboring GSM cell frequencies in the GSM BA1 list is 31 (neighboring UMTS cells are configured) or 32 (neighboring UMTS cells are not configured). GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: ON(On)

CELL2GBA2OPTSW

BSC6900

SET GCELLHO2GBA2

GBFD 111101


Meaning: As stipulated in 3GPP TS 44.018, if a cell is configured with neighboring UMTS cells, the cell can be configured with a maximum of 31 neighboring GSM cell frequencies; if a cell is configured with neighboring LTE cells, the cell can be configured with a maximum of (31 Number of neighboring LTE cell frequencies) neighboring GSM cell frequencies. If the number of configured neighboring GSM cell frequencies violates this stipulation, the reporting of information about neighboring UMTS or LTE cells will fail. When a cell is configured with neighboring LTE cells, this parameter indicates whether the configuration of neighboring GSM cell frequencies takes the neighboring LTE cells into account. For a common cell: If this parameter is set to ON, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is (31 Number of neighboring LTE cell frequencies). Furthermore, if "CELL2GBA2TAG" is set to AUTO and the number of neighboring GSM cell frequencies exceeds the maximum number, the BSC sorts the neighboring GSM cell frequencies based on their "GNCELLRANKPRI" values in ascending order. If "GNCELLRANKPRI" is set to the same value for these neighboring cells, the BSC sorts the neighboring cell frequencies in ascending order of ARFCNs. After the sorting, the BSC selects an appropriate number of frequencies to generate the GSM BA2 list. If this parameter is set to OFF, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 31 (neighboring UMTS cells are configured) or 32 (neighboring UMTS cells are not configured). For an MOCN cell: If "MocnCmCell" is set to YES and this parameter is set to ON, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 64. After neighboring cells are filtered, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is (31 Number of neighboring LTE cell frequencies). The maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 64 when all of the following conditions are met:


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Parameter ID

NE

MML Command

Feature ID

CELL2GBA2OPTSW

BSC6910

SET GCELLHO2GBA2

GBFD 111101

1. This parameter is set to OFF. Feature Name Description 2. "MocnCmCell" is set to YES. 3. "GHoFilterOpt" is set to ON. After neighboring cells are filtered, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 31 (neighboring UMTS cells are configured) or 32 (neighboring UMTS cells are not configured). If "MocnCmCell" is set to YES, this parameter is set to OFF, and if "GHoFilterOpt" is set to OFF, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 64. After neighboring cells are filtered, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 32 (regardless of whether neighboring UMTS cells are configured). If "MOCNIISw" is set to ON and this parameter is set to ON, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 64. After neighboring cells are filtered, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is (31 Number of neighboring LTE cell frequencies). If "MOCNIISw" is set to ON and this parameter is set to OFF, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 64. After neighboring cells are filtered, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 31 (neighboring UMTS cells are configured) or 32 (neighboring UMTS cells are not configured). where the maximum number of neighboring LTE cell frequencies is 6 (if "CELL2GBA2OPTENHSW" is set to ON) or 3 (if "CELL2GBA2OPTENHSW" is OFF). GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: ON(On) System Information Sending

Meaning: As stipulated in 3GPP TS 44.018, if a cell is configured with neighboring UMTS cells, the cell can be configured with a maximum of 31 neighboring GSM cell frequencies; if a cell is configured with neighboring LTE cells, the cell can be configured with a maximum of (31 Number of neighboring LTE cell frequencies) neighboring GSM cell frequencies. If the number of configured neighboring GSM cell frequencies violates this stipulation, the reporting of information about neighboring UMTS or LTE cells will fail. When a cell is configured with neighboring LTE cells, this parameter indicates whether the configuration of neighboring GSM cell frequencies takes the neighboring LTE cells into account. For a common cell: If this parameter is set to ON, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is (31 Number of neighboring LTE cell frequencies). Furthermore, if "CELL2GBA2TAG" is set to AUTO and the number of neighboring GSM cell frequencies exceeds the maximum number, the BSC sorts the neighboring GSM cell frequencies based on their "GNCELLRANKPRI" values in ascending order. If "GNCELLRANKPRI" is set to the same value for these neighboring cells, the BSC sorts the neighboring cell frequencies in ascending order of ARFCNs. After the sorting, the BSC selects an appropriate number of frequencies to generate the GSM BA2 list. If this parameter is set to OFF, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 31 (neighboring UMTS cells are configured) or 32 (neighboring UMTS cells are not configured). For an MOCN cell: If "MocnCmCell" is set to YES and this parameter is set to ON, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 64. After neighboring cells are filtered, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is (31 Number of neighboring LTE cell frequencies).


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Interoperability Between GSM and LTE Feature Parameter Description Feature ID

The maximum number of neighboring GSM cell Feature Name Description frequencies in the GSM BA2 list is 64 when all of the following conditions are met: 1. This parameter is set to OFF. 2. "MocnCmCell" is set to YES. 3. "GHoFilterOpt" is set to ON. After neighboring cells are filtered, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 31 (neighboring UMTS cells are configured) or 32 (neighboring UMTS cells are not configured). If "MocnCmCell" is set to YES, this parameter is set to OFF, and if "GHoFilterOpt" is set to OFF, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 64. After neighboring cells are filtered, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 32 (regardless of whether neighboring UMTS cells are configured). If "MOCNIISw" is set to ON and this parameter is set to ON, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 64. After neighboring cells are filtered, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is (31 Number of neighboring LTE cell frequencies). If "MOCNIISw" is set to ON and this parameter is set to OFF, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 64. After neighboring cells are filtered, the maximum number of neighboring GSM cell frequencies in the GSM BA2 list is 31 (neighboring UMTS cells are configured) or 32 (neighboring UMTS cells are not configured). where the maximum number of neighboring LTE cell frequencies is 6 (if "CELL2GBA2OPTENHSW" is set to ON) or 3 (if "CELL2GBA2OPTENHSW" is OFF). GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: ON(On)

Parameter ID

NE

MML Command

RimOnEcoSw

BSC6900

SET BSCPSSOFTPARA None

None

Meaning: Whether the BSC supports the RIM procedure through the eCoordinator. When this parameter is set to ON, the BSC transmits RIM messages through the eCoordinator. When this parameter is set to OFF, the BSC transmits RIM messages through the CN. This parameter is an advanced parameter. To change the parameter settings, ask Huawei Customer Center for help. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

RimOnEcoSw

BSC6910

SET BSCPSSOFTPARA None

None

Meaning: Whether the BSC supports the RIM procedure through the eCoordinator. When this parameter is set to ON, the BSC transmits RIM messages through the eCoordinator. When this parameter is set to OFF, the BSC transmits RIM messages through the CN. This parameter is an advanced parameter. To change the parameter settings, ask Huawei Customer Center for help. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)


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Parameter ID

NE

MML Command

Feature ID


PFCSwitch

BSC6900

SET GCELLPSOTHERPARA

GBFD 119502 GBFD 119905 GBFD 119907 GBFD 119906 GBFD 119902

PS Handover PoC QoS PS Service in Priority Conversational QoS QoS ARP&THP

Meaning: Whether a cell supports the Packet Flow Context (PFC) procedure that can improve Quality of Service (QoS) of packet services. The PFC procedure takes effect when a cell, the network service entity (NSE) the cell belongs to, and the SGSN support PFC. The NSE supports PFC when "PFCSUP" is set to YES. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

PFCSwitch

BSC6910

SET GCELLPSOTHERPARA


PS Handover PoC QoS PS Service in Priority Conversational QoS QoS ARP&THP

Meaning: Whether a cell supports the Packet Flow Context (PFC) procedure that can improve Quality of Service (QoS) of packet services. The PFC procedure takes effect when a cell, the network service entity (NSE) the cell belongs to, and the SGSN support PFC. The NSE supports PFC when "PFCSUP" is set to YES. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

NCELLPRI

BSC6900

ADD G2GNCELL MOD G2GNCELL

GBFD 110402

Basic Cell Re Meaning: Common priority of the neighboring 2G selection cell. Value 0 indicates the lowest priority, and value 7 indicates the highest priority. Value 255 is invalid. GUI Value Range: 0~7;255 Unit: None Actual Value Range: 0~7, 255 Default Value: 255

NCELLPRI

BSC6910

ADD G2GNCELL MOD G2GNCELL

GBFD 110402

Basic Cell Re Meaning: Common priority of the neighboring 2G selection cell. Value 0 indicates the lowest priority, and value 7 indicates the highest priority. Value 255 is invalid. GUI Value Range: 0~7;255 Unit: None Actual Value Range: 0~7, 255 Default Value: 255

NCELLPRI

BSC6900

ADD GLTENCELL MOD GLTENCELL

GBFD 511301


Meaning: Common priority of a neighboring LTE cell. Value 0 indicates the lowest priority, value 7 indicates the highest priority, and value 255 is invalid. GUI Value Range: 0~7;255 Unit: None Actual Value Range: 0~7, 255 Default Value: 255

NCELLPRI

BSC6910


GBFD 511301


Meaning: Common priority of a neighboring LTE cell. Value 0 indicates the lowest priority, value 7 indicates the highest priority, and value 255 is invalid. GUI Value Range: 0~7;255 Unit: None Actual Value Range: 0~7, 255 Default Value: 255

LTECELLRESELEN

BSC6900

SET GCELLHOBASIC

GBFD 511301 GBFD 511312

Cell Reselection Between GSM and LTE Fast LTE Reselection at 2G CS Call Release

Meaning: Whether to allow cell reselection from GSM to LTE cells. When this parameter is set to YES, cell reselection from GSM to LTE cells is allowed. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: NO(No)

LTECELLRESELEN

BSC6910

SET GCELLHOBASIC

GBFD 511301 GBFD 511312


Meaning: Whether to allow cell reselection from GSM to LTE cells. When this parameter is set to YES, cell reselection from GSM to LTE cells is allowed. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: NO(No)


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Parameter ID

NE

MML Command

Feature ID


THRPRISEARCH

BSC6900



Meaning: When the receive level of the serving cell is higher than the value of this parameter, the MS does not search for neighboring cells in UTRAN or EUTRAN whose priority is lower than the GERAN priority. The values of this parameter correspond to the following decibel values: 0: 98 dBm, 1: 95 dBm, 2: 92 dBm, ..., 13: 59 dBm, 14: 56 dBm, 15: (always), that is, the MS always searches for neighboring cells in UTRAN or EUTRAN whose priority is lower than the GERAN priority. GUI Value Range: 0~15 Unit: None Actual Value Range: 0~15 Default Value: 15

THRPRISEARCH

BSC6910



Meaning: When the receive level of the serving cell is higher than the value of this parameter, the MS does not search for neighboring cells in UTRAN or EUTRAN whose priority is lower than the GERAN priority. The values of this parameter correspond to the following decibel values: 0: 98 dBm, 1: 95 dBm, 2: 92 dBm, ..., 13: 59 dBm, 14: 56 dBm, 15: (always), that is, the MS always searches for neighboring cells in UTRAN or EUTRAN whose priority is lower than the GERAN priority. GUI Value Range: 0~15 Unit: None Actual Value Range: 0~15 Default Value: 15

RIMSUP

BSC6900

ADD NSE MOD NSE

GBFD 511308 GBFD 116301

eNACC Between GSM and LTE Network Assisted Cell Change (NACC)

Meaning: Whether to support RAN information management (RIM). In the RIM procedure, RANs (Radio Access Network) can exchange messages through the core network. GUI Value Range: NO(No Support), YES(Support) Unit: None Actual Value Range: NO, YES Default Value: NO(No Support)

RIMSUP

BSC6910

ADD NSE MOD NSE

GBFD 511308 GBFD 116301

eNACC Between GSM and LTE Network Assisted Cell Change (NACC)

Meaning: Whether to support RAN information management (RIM). In the RIM procedure, RANs (Radio Access Network) can exchange messages through the core network. GUI Value Range: NO(No Support), YES(Support) Unit: None Actual Value Range: NO, YES Default Value: NO(No Support)

EUTRANPRI

BSC6900

SET GBFD GCELLPRIEUTRANSYS 511301 GBFD 511312


Meaning: Common priority of EUTRAN. Value 0 indicates the lowest priority, and value 7 indicates the highest priority. GUI Value Range: 0~7 Unit: None Actual Value Range: 0~7 Default Value: 6

EUTRANPRI

BSC6910

SET GBFD GCELLPRIEUTRANSYS 511301 GBFD 511312


Meaning: Common priority of EUTRAN. Value 0 indicates the lowest priority, and value 7 indicates the highest priority. GUI Value Range: 0~7 Unit: None Actual Value Range: 0~7 Default Value: 6


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Parameter ID

NE

MML Command

Feature ID


EUTRANQRXLEVMIN

BSC6900



Meaning: Used to calculate the RSRP threshold for the target cell when a prioritybased decision to perform GSM to EUTRAN cell reselection is made. The values of this parameter correspond to the following decibel values: 0: 140 dBm, 1: 138 dBm, 2: 136 dBm, ..., 30: 80 dBm, 31: 78 dBm. GUI Value Range: 0~31 Unit: None Actual Value Range: 0~31 Default Value: 6

EUTRANQRXLEVMIN

BSC6910



Meaning: Used to calculate the RSRP threshold for the target cell when a prioritybased decision to perform GSM to EUTRAN cell reselection is made. The values of this parameter correspond to the following decibel values: 0: 140 dBm, 1: 138 dBm, 2: 136 dBm, ..., 30: 80 dBm, 31: 78 dBm. GUI Value Range: 0~31 Unit: None Actual Value Range: 0~31 Default Value: 6

THREUTRANHIGH

BSC6900



Meaning: If the measured RSRP value of one or more neighboring EUTRAN cells is higher than the value of this parameter, the MS is allowed to reselect a neighboring cell in EUTRAN whose priority is higher than the GERAN priority. The values of this parameter correspond to the following decibel values: 0: 0dB, 1: 2dB, 2: 4dB, 3: 6dB, ..., 30: 60dB, 31: 62dB. GUI Value Range: 0~31 Unit: None Actual Value Range: 0~31 Default Value: 10

THREUTRANHIGH

BSC6910



Meaning: If the measured RSRP value of one or more neighboring EUTRAN cells is higher than the value of this parameter, the MS is allowed to reselect a neighboring cell in EUTRAN whose priority is higher than the GERAN priority. The values of this parameter correspond to the following decibel values: 0: 0dB, 1: 2dB, 2: 4dB, 3: 6dB, ..., 30: 60dB, 31: 62dB. GUI Value Range: 0~31 Unit: None Actual Value Range: 0~31 Default Value: 10


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Parameter ID

NE

MML Command

Feature ID


THREUTRANLOW

BSC6900



Meaning: If the receive levels of the serving cell and all neighboring GSM cells are lower than "Low GSM Threshold Based on Priority", and if the measured RSRP value of one or more neighboring EUTRAN cells is higher than the value of this parameter, the MS is allowed to reselect a neighboring cell in EUTRAN whose priority is lower than the GERAN priority. The values of this parameter correspond to the following decibel values: 0: 0dB, 1: 2dB, 2: 4dB, 3: 6dB, ..., 30: 60dB, 31: 62dB. GUI Value Range: 0~31 Unit: None Actual Value Range: 0~31 Default Value: 10

THREUTRANLOW

BSC6910



Meaning: If the receive levels of the serving cell and all neighboring GSM cells are lower than "Low GSM Threshold Based on Priority", and if the measured RSRP value of one or more neighboring EUTRAN cells is higher than the value of this parameter, the MS is allowed to reselect a neighboring cell in EUTRAN whose priority is lower than the GERAN priority. The values of this parameter correspond to the following decibel values: 0: 0dB, 1: 2dB, 2: 4dB, 3: 6dB, ..., 30: 60dB, 31: 62dB. GUI Value Range: 0~31 Unit: None Actual Value Range: 0~31 Default Value: 10

HPRIO

BSC6900



Meaning: An MS can reselect a neighboring cell in UTRAN or EUTRAN whose priority is lower than the GERAN priority when all the following conditions are met: 1) The receive levels of the serving cell and all neighboring GSM cells are lower than "THRGSMLOW". 2) Neighboring UTRAN cells for which the measured RSCP values are less than or equal to "THRUTRANLOW" exist, and neighboring EUTRAN cells for which the measured RSRP values are less than or equal to "THREUTRANLOW" also exist. 3) The measured RSCP (or RSRP) value of one or more neighboring UTRAN (or EUTRAN) cells exceeds the measured receive level of the serving cell by at least the decibel value corresponding to the value of this parameter. The values of this parameter correspond to the following decibel values: 0: positive infinity, 1: 5 dB, 2: 4 dB, 3: 3 dB. For details, see 3GPP TS 45.008. GUI Value Range: 0~3 Unit: None Actual Value Range: 0~3 Default Value: 0


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Parameter ID

NE

MML Command

Feature ID


HPRIO

BSC6910



Meaning: An MS can reselect a neighboring cell in UTRAN or EUTRAN whose priority is lower than the GERAN priority when all the following conditions are met: 1) The receive levels of the serving cell and all neighboring GSM cells are lower than "THRGSMLOW". 2) Neighboring UTRAN cells for which the measured RSCP values are less than or equal to "THRUTRANLOW" exist, and neighboring EUTRAN cells for which the measured RSRP values are less than or equal to "THREUTRANLOW" also exist. 3) The measured RSCP (or RSRP) value of one or more neighboring UTRAN (or EUTRAN) cells exceeds the measured receive level of the serving cell by at least the decibel value corresponding to the value of this parameter. The values of this parameter correspond to the following decibel values: 0: positive infinity, 1: 5 dB, 2: 4 dB, 3: 3 dB. For details, see 3GPP TS 45.008. GUI Value Range: 0~3 Unit: None Actual Value Range: 0~3 Default Value: 0

TRESEL

BSC6900



Meaning: Period during which the measured RSCP (or RSRP) value must meet the cell reselection condition when a prioritybased decision to perform a GSM to UTRAN (or EUTRAN) cell reselection is made. The values of this parameter correspond to the following time values: 0: 5s, 1: 10s, 2: 15s, 3: 20s. GUI Value Range: 0~3 Unit: None Actual Value Range: 0~3 Default Value: 0

TRESEL

BSC6910



Meaning: Period during which the measured RSCP (or RSRP) value must meet the cell reselection condition when a prioritybased decision to perform a GSM to UTRAN (or EUTRAN) cell reselection is made. The values of this parameter correspond to the following time values: 0: 5s, 1: 10s, 2: 15s, 3: 20s. GUI Value Range: 0~3 Unit: None Actual Value Range: 0~3 Default Value: 0

GERANPRI

BSC6900



Meaning: Common priority of GERAN. Value 0 indicates the lowest priority, and value 7 indicates the highest priority. GUI Value Range: 0~7 Unit: None Actual Value Range: 0~7 Default Value: 1


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Parameter ID

NE

MML Command

Feature ID


GERANPRI

BSC6910



Meaning: Common priority of GERAN. Value 0 indicates the lowest priority, and value 7 indicates the highest priority. GUI Value Range: 0~7 Unit: None Actual Value Range: 0~7 Default Value: 1

THRGSMLOW

BSC6900



Meaning: If C1 values of the serving cell and its neighboring GSM cells are lower than the value of this parameter, the MS is allowed to reselect a neighboring cell in UTRAN or EUTRAN whose priority is lower than the GERAN priority. The values of this parameter correspond to the following decibel values: 0: 0 dB, 1: 2 dB, 2: 4 dB, ..., 13: 26 dB, 14: 28 dB, 15: (always), that is, the MS is always allowed to reselect a neighboring cell in UTRAN or EUTRAN whose priority is lower than the GERAN priority. GUI Value Range: 0~15 Unit: None Actual Value Range: 0~15 Default Value: 0

THRGSMLOW

BSC6910



Meaning: If C1 values of the serving cell and its neighboring GSM cells are lower than the value of this parameter, the MS is allowed to reselect a neighboring cell in UTRAN or EUTRAN whose priority is lower than the GERAN priority. The values of this parameter correspond to the following decibel values: 0: 0 dB, 1: 2 dB, 2: 4 dB, ..., 13: 26 dB, 14: 28 dB, 15: (always), that is, the MS is always allowed to reselect a neighboring cell in UTRAN or EUTRAN whose priority is lower than the GERAN priority. GUI Value Range: 0~15 Unit: None Actual Value Range: 0~15 Default Value: 0

THRUTRANHIGH

BSC6900



Meaning: If the measured RSCP value of one or more neighboring UTRAN cells is higher than the value of this parameter, the MS is allowed to reselect a neighboring cell in UTRAN whose priority is higher than the GERAN priority. The values of this parameter correspond to the following decibel values: 0: 0 dB, 1: 2 dB, 2: 4 dB, 3: 6 dB, ..., 30: 60 dB, 31: 62 dB. GUI Value Range: 0~31 Unit: None Actual Value Range: 0~31 Default Value: 6


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Parameter ID

NE

MML Command

Feature ID


THRUTRANHIGH

BSC6910



Meaning: If the measured RSCP value of one or more neighboring UTRAN cells is higher than the value of this parameter, the MS is allowed to reselect a neighboring cell in UTRAN whose priority is higher than the GERAN priority. The values of this parameter correspond to the following decibel values: 0: 0 dB, 1: 2 dB, 2: 4 dB, 3: 6 dB, ..., 30: 60 dB, 31: 62 dB. GUI Value Range: 0~31 Unit: None Actual Value Range: 0~31 Default Value: 6

UTRANPRI

BSC6900



Meaning: Common priority of UTRAN. Value 0 indicates the lowest priority, and value 7 indicates the highest priority. GUI Value Range: 0~7 Unit: None Actual Value Range: 0~7 Default Value: 3

UTRANPRI

BSC6910



Meaning: Common priority of UTRAN. Value 0 indicates the lowest priority, and value 7 indicates the highest priority. GUI Value Range: 0~7 Unit: None Actual Value Range: 0~7 Default Value: 3

UTRANQRXLEVMIN

BSC6900



Meaning: Used to calculate the RSCP threshold for the target cell when a prioritybased decision to perform GSM to UTRAN cell reselection is made. The values of this parameter correspond to the following decibel values: 0: 119 dBm, 1: 117 dBm, 2: 115 dBm, ..., 30: 59 dBm, 31: 57 dBm. GUI Value Range: 0~31 Unit: None Actual Value Range: 0~31 Default Value: 2

UTRANQRXLEVMIN

BSC6910



Meaning: Used to calculate the RSCP threshold for the target cell when a prioritybased decision to perform GSM to UTRAN cell reselection is made. The values of this parameter correspond to the following decibel values: 0: 119 dBm, 1: 117 dBm, 2: 115 dBm, ..., 30: 59 dBm, 31: 57 dBm. GUI Value Range: 0~31 Unit: None Actual Value Range: 0~31 Default Value: 2


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Parameter ID

NE

MML Command

Feature ID

THRUTRANLOW

BSC6900



Meaning: If the receive levels of the serving cell and all neighboring GSM cells are lower than "Low GSM Threshold Based on Priority", and if the measured RSCP value of one or more neighboring UTRAN cells is higher than the value of this parameter, the MS is allowed to reselect a neighboring cell in UTRAN whose priority is lower than the GERAN priority. The values of this parameter correspond to the following decibel values: 0: 0 dB, 1: 2 dB, 2: 4 dB, 3: 6 dB, ..., 30: 60 dB, 31: 62 dB. GUI Value Range: 0~31 Unit: None Actual Value Range: 0~31 Default Value: 6

THRUTRANLOW

BSC6910



Meaning: If the receive levels of the serving cell and all neighboring GSM cells are lower than "Low GSM Threshold Based on Priority", and if the measured RSCP value of one or more neighboring UTRAN cells is higher than the value of this parameter, the MS is allowed to reselect a neighboring cell in UTRAN whose priority is lower than the GERAN priority. The values of this parameter correspond to the following decibel values: 0: 0 dB, 1: 2 dB, 2: 4 dB, 3: 6 dB, ..., 30: 60 dB, 31: 62 dB. GUI Value Range: 0~31 Unit: None Actual Value Range: 0~31 Default Value: 6

NCO

BSC6900

SET GCELLPSBASE

Networking Control Mode

Meaning: Network control mode for cell reselection of an MS. There are three modes. NC0: normal MS control. The MS automatically performs a cell reselection. NC1: MS control with measurement reports. The MS sends measurement reports to the BSC and automatically performs a cell reselection. NC2: networkcontrolled cell reselection. The MS sends measurement reports to the BSC, and the BSC determines whether to perform a cell reselection. The MS automatically performs a cell reselection when the downlink signaling fails to be sent, the random access fails, the access to the cell is prohibited, or C1 is less than 0. The networkcontrolled cell reselection takes effect only if this parameter is set to NC2 and "Support NC2" in the "SET GCELLGPRS" command is set to YES. GUI Value Range: NC0(NC0), NC1(NC1), NC2(NC2) Unit: None Actual Value Range: NC0, NC1, NC2 Default Value: NC0(NC0)

GBFD 119107



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Parameter ID

NE

MML Command

Feature ID


NCO

BSC6910

SET GCELLPSBASE

GBFD 119107

Networking Control Mode

QPEUTRAN

BSC6900


Meaning: Network control mode for cell reselection of an MS. There are three modes. NC0: normal MS control. The MS automatically performs a cell reselection. NC1: MS control with measurement reports. The MS sends measurement reports to the BSC and automatically performs a cell reselection. NC2: networkcontrolled cell reselection. The MS sends measurement reports to the BSC, and the BSC determines whether to perform a cell reselection. The MS automatically performs a cell reselection when the downlink signaling fails to be sent, the random access fails, the access to the cell is prohibited, or C1 is less than 0. The networkcontrolled cell reselection takes effect only if this parameter is set to NC2 and "Support NC2" in the "SET GCELLGPRS" command is set to YES. GUI Value Range: NC0(NC0), NC1(NC1), NC2(NC2) Unit: None Actual Value Range: NC0, NC1, NC2 Default Value: NC0(NC0)

eNC2 Meaning: Between GSM Threshold of signal level at which a mobile station and LTE starts to search for the target EUTRAN cell during cell reselection. In packet mode, if this parameter is set to a value lower than 7, the mobile station starts to search for an EUTRAN cell when the signal level of the serving cell is lower than the corresponding level threshold. If this parameter is set to a value higher than 7, the mobile station starts to search for an EUTRAN cell when the signal level of the serving cell is higher than the corresponding level threshold. The values of this parameter correspond to the following decibel values: 0= 98dBm, 1= 94dBm, 2= 90dBm, ..., 7= (always), that is, the MS always searches for neighboring cells in EUTRAN. 8= 78dBm, 9= 74dBm, 10= 70dBm, ..., 14= 54dBm, 15= (never), that is, the MS never searches for neighboring cells in EUTRAN. GUI Value Range: 0~15 Unit: None Actual Value Range: 0~15 Default Value: 15


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Parameter ID

NE

MML Command

Feature ID


QPEUTRAN

BSC6910


eNC2 Meaning: Between GSM Threshold of signal level at which a mobile station and LTE starts to search for the target EUTRAN cell during cell reselection. In packet mode, if this parameter is set to a value lower than 7, the mobile station starts to search for an EUTRAN cell when the signal level of the serving cell is lower than the corresponding level threshold. If this parameter is set to a value higher than 7, the mobile station starts to search for an EUTRAN cell when the signal level of the serving cell is higher than the corresponding level threshold. The values of this parameter correspond to the following decibel values: 0= 98dBm, 1= 94dBm, 2= 90dBm, ..., 7= (always), that is, the MS always searches for neighboring cells in EUTRAN. 8= 78dBm, 9= 74dBm, 10= 70dBm, ..., 14= 54dBm, 15= (never), that is, the MS never searches for neighboring cells in EUTRAN. GUI Value Range: 0~15 Unit: None Actual Value Range: 0~15 Default Value: 15

BESTEUTRANCELLNUM

BSC6900


eNC2 Meaning: Number of neighboring EUTRAN cells Between GSM that need to be contained in the measurement and LTE report sent by an MS. GUI Value Range: 0~3 Unit: None Actual Value Range: 0~3 Default Value: 2

BESTEUTRANCELLNUM

BSC6910


eNC2 Meaning: Number of neighboring EUTRAN cells Between GSM that need to be contained in the measurement and LTE report sent by an MS. GUI Value Range: 0~3 Unit: None Actual Value Range: 0~3 Default Value: 2

THREUTRANRPT

BSC6900


eNC2 Meaning: Between GSM A measurement report is valid only when the and LTE receive level of an LTE cell in the measurement report is greater than or equal to the value of this parameter. The values of this parameter correspond to the following decibel values: 0: 0 dB, 1: 6 dB, ..., 6: 36 dB, 7: positive infinity. GUI Value Range: 0~7 Unit: None Actual Value Range: 0~7 Default Value: 0


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Parameter ID

NE

MML Command

Feature ID


THREUTRANRPT

BSC6910


eNC2 Meaning: Between GSM A measurement report is valid only when the and LTE receive level of an LTE cell in the measurement report is greater than or equal to the value of this parameter. The values of this parameter correspond to the following decibel values: 0: 0 dB, 1: 6 dB, ..., 6: 36 dB, 7: positive infinity. GUI Value Range: 0~7 Unit: None Actual Value Range: 0~7 Default Value: 0

TrafficReselAllow

BSC6900

SET GCELLNC2PARA

GBFD 114301 GBFD 511307 GBFD 511306 GBFD 116201

GSM/WCDMA Interoperability eNC2 Between GSM and LTE GSM/LTE Service Based PS Handover Network Controlled Cell Reselection (NC2)

Meaning: Whether to allow the cell service reselection. When this parameter is set to "PERMIT", the Radio Access Technology (RAT) of the candidate cell is considered in the algorithm for cell service reselection. GUI Value Range: FORBID(Forbid), PERMIT(Permit) Unit: None Actual Value Range: FORBID, PERMIT Default Value: PERMIT(Permit)

TrafficReselAllow

BSC6910

SET GCELLNC2PARA


GSM/WCDMA Interoperability eNC2 Between GSM and LTE GSM/LTE Service Based PS Handover Network Controlled Cell Reselection (NC2)

Meaning: Whether to allow the cell service reselection. When this parameter is set to "PERMIT", the Radio Access Technology (RAT) of the candidate cell is considered in the algorithm for cell service reselection. GUI Value Range: FORBID(Forbid), PERMIT(Permit) Unit: None Actual Value Range: FORBID, PERMIT Default Value: PERMIT(Permit)

URGENTRESELALLOW

BSC6900

SET GCELLNC2PARA


PS Handover Between GSM and LTE Based on Quality GSM/WCDMA Interoperability eNC2 Between GSM and LTE Network Controlled Cell Reselection (NC2)

Meaning: Whether to allow cell urgent reselection. When the number of measurement reports about transmission quality in the downlink Packet Downlink Ack/Nack message is equal to or larger than "MSRXQUALSTATTHRSH" and the number of times when the MS downlink transmission quality is lower than the MS transmission quality threshold is equal to or larger than "CELLRXQUALWORSENRATIOTHRSH", the cell reselection is an urgent cell reselection. If this parameter is set to PERMIT(Permit) and "NC2 Load Reselection Switch" is set to SUPPORT(Support), the load of the target cell serves as a parameter when you attempt to enable the loadbased cell reselection algorithm. GUI Value Range: FORBID(Forbid), PERMIT(Permit) Unit: None Actual Value Range: FORBID, PERMIT Default Value: PERMIT(Permit)


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Parameter ID

NE

MML Command

Feature ID


URGENTRESELALLOW

BSC6910

SET GCELLNC2PARA



Meaning: Whether to allow cell urgent reselection. When the number of measurement reports about transmission quality in the downlink Packet Downlink Ack/Nack message is equal to or larger than "MSRXQUALSTATTHRSH" and the number of times when the MS downlink transmission quality is lower than the MS transmission quality threshold is equal to or larger than "CELLRXQUALWORSENRATIOTHRSH", the cell reselection is an urgent cell reselection. If this parameter is set to PERMIT(Permit) and "NC2 Load Reselection Switch" is set to SUPPORT(Support), the load of the target cell serves as a parameter when you attempt to enable the loadbased cell reselection algorithm. GUI Value Range: FORBID(Forbid), PERMIT(Permit) Unit: None Actual Value Range: FORBID, PERMIT Default Value: PERMIT(Permit)

CELLRXQUALWORSENRATIOTHRSH BSC6900

SET GCELLNC2PARA



Meaning: Proportion threshold of transmissions with poor quality. This parameter is used in the case of emergency cell reselection. The BSC accumulates the number of times that the downlink transmission quality of an MS is lower than the transmission quality threshold of the MS (including GPRS Quality Threshold, EDGE GMSK Quality Threshold, and EDGE 8PSK Quality Threshold). When the proportion of the accumulated number of transmissions with poor quality to the number of received downlink transmission quality measurement reports is greater than or equal to the threshold specified by this parameter, the BSC triggers an emergency cell reselection. GUI Value Range: 0~100 Unit: % Actual Value Range: 0~100 Default Value: 30

CELLRXQUALWORSENRATIOTHRSH BSC6910

SET GCELLNC2PARA



Meaning: Proportion threshold of transmissions with poor quality. This parameter is used in the case of emergency cell reselection. The BSC accumulates the number of times that the downlink transmission quality of an MS is lower than the transmission quality threshold of the MS (including GPRS Quality Threshold, EDGE GMSK Quality Threshold, and EDGE 8PSK Quality Threshold). When the proportion of the accumulated number of transmissions with poor quality to the number of received downlink transmission quality measurement reports is greater than or equal to the threshold specified by this parameter, the BSC triggers an emergency cell reselection. GUI Value Range: 0~100 Unit: % Actual Value Range: 0~100 Default Value: 30

LOADRESELALLOW

SET GCELLNC2PARA


GSM/WCDMA Interoperability eNC2 Between GSM and LTE Network Controlled Cell Reselection (NC2) PS Handover Between GSM and LTE Based on Cell Load

Meaning: Whether to allow loadbased cell reselection. When the uplink load or downlink load is greater than "LOADRESELSTARTTHRSH" and the level is smaller than "LOADRESELMAXRXLEV" in a service cell, the cell reselection is a load reselection. If this parameter is set to PERMIT(Permit) and "NC2 Load Reselection Switch" is set to Support(Support), the load of the target cell serves as a parameter when you attempt to enable the loadbased cell reselection algorithm. GUI Value Range: FORBID(Forbid), PERMIT(Permit) Unit: None Actual Value Range: FORBID, PERMIT Default Value: PERMIT(Permit)

BSC6900


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Parameter ID

NE

MML Command

Feature ID


LOADRESELALLOW

BSC6910

SET GCELLNC2PARA



Meaning: Whether to allow loadbased cell reselection. When the uplink load or downlink load is greater than "LOADRESELSTARTTHRSH" and the level is smaller than "LOADRESELMAXRXLEV" in a service cell, the cell reselection is a load reselection. If this parameter is set to PERMIT(Permit) and "NC2 Load Reselection Switch" is set to Support(Support), the load of the target cell serves as a parameter when you attempt to enable the loadbased cell reselection algorithm. GUI Value Range: FORBID(Forbid), PERMIT(Permit) Unit: None Actual Value Range: FORBID, PERMIT Default Value: PERMIT(Permit)

LOADRESELMAXRXLEV

BSC6900

SET GCELLNC2PARA



Meaning: Threshold for reselecting a cell . When the receive level of the serving cell is lower than this threshold, the load reselection is triggered. GUI Value Range: 0~63 Unit: None Actual Value Range: 0~63 Default Value: 40

LOADRESELMAXRXLEV

BSC6910

SET GCELLNC2PARA



Meaning: Threshold for reselecting a cell . When the receive level of the serving cell is lower than this threshold, the load reselection is triggered. GUI Value Range: 0~63 Unit: None Actual Value Range: 0~63 Default Value: 40

LOADRESELSTARTTHRSH

BSC6900

SET GCELLNC2PARA



Meaning: When the uplink load or downlink load of the cell exceeds this threshold, the load reselection decision is made. GUI Value Range: 0~100 Unit: % Actual Value Range: 0~100 Default Value: 85

LOADRESELSTARTTHRSH

BSC6910

SET GCELLNC2PARA



Meaning: When the uplink load or downlink load of the cell exceeds this threshold, the load reselection decision is made. GUI Value Range: 0~100 Unit: % Actual Value Range: 0~100 Default Value: 85


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Parameter ID

NE

MML Command

Feature ID


NORMALRESELALLOW

BSC6900

SET GCELLNC2PARA


PS Handover Between GSM and LTE Based on Coverage eNC2 Between GSM and LTE Network Controlled Cell Reselection (NC2) GSM/WCDMA Interoperability

Meaning: Whether to allow a normal cell reselection. A normal cell reselection is triggered when both of the following conditions are met: The number of times the BSC consecutively measures the receive level of a serving cell in a Packet Measurement Report message is greater than or equal to the value of "RESELWATCHPERIOD". The number of times the receive level of a serving cell is lower than the level specified by "MINACCRXLEV" is greater than the value of "RESELWORSENLEVTHRSH". When this parameter is set to PERMIT(Permit) and "NC2LoadResel" is set to Support(Support), the BSC considers cell load as a parameter when determining the target cell among all candidate cells during a normal cell reselection. GUI Value Range: FORBID(Forbid), PERMIT(Permit) Unit: None Actual Value Range: FORBID, PERMIT Default Value: PERMIT(Permit)

NORMALRESELALLOW

BSC6910

SET GCELLNC2PARA


PS Handover Between GSM and LTE Based on Coverage eNC2 Between GSM and LTE Network Controlled Cell Reselection (NC2) GSM/WCDMA Interoperability

Meaning: Whether to allow a normal cell reselection. A normal cell reselection is triggered when both of the following conditions are met: The number of times the BSC consecutively measures the receive level of a serving cell in a Packet Measurement Report message is greater than or equal to the value of "RESELWATCHPERIOD". The number of times the receive level of a serving cell is lower than the level specified by "MINACCRXLEV" is greater than the value of "RESELWORSENLEVTHRSH". When this parameter is set to PERMIT(Permit) and "NC2LoadResel" is set to Support(Support), the BSC considers cell load as a parameter when determining the target cell among all candidate cells during a normal cell reselection. GUI Value Range: FORBID(Forbid), PERMIT(Permit) Unit: None Actual Value Range: FORBID, PERMIT Default Value: PERMIT(Permit)

RESELWATCHPERIOD

BSC6900

SET GCELLNC2PARA


GSM/WCDMA Interoperability eNC2 Between GSM and LTE Network Controlled Cell Reselection (NC2) PS Handover Between GSM and LTE Based on Coverage

Meaning: The number of received Packet Measurement Report messages on the receive level of the serving cell is measured continuously. When the statistical value is greater than or equal to the value of this parameter, the normal reselection decision is made. GUI Value Range: 1~32 Unit: None Actual Value Range: 1~32 Default Value: 10

RESELWATCHPERIOD

BSC6910

SET GCELLNC2PARA



Meaning: The number of received Packet Measurement Report messages on the receive level of the serving cell is measured continuously. When the statistical value is greater than or equal to the value of this parameter, the normal reselection decision is made. GUI Value Range: 1~32 Unit: None Actual Value Range: 1~32 Default Value: 10


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Parameter ID

NE

MML Command

Feature ID


MINACCRXLEV

BSC6900

SET GCELLNC2PARA


GSM/WCDMA Interoperability PS Handover Between GSM and LTE Based on Quality PS Handover Between GSM and LTE Based on Coverage eNC2 Between GSM and LTE GSM/LTE Service Based PS Handover Network Controlled Cell Reselection (NC2) PS Handover Between GSM and LTE Based on Cell Load

Meaning: Minimum receive level for a neighboring cell to become a candidate cell during cell reselection. In addition, the parameter value is used to calculate the times of occurrences of bad normal cell reselection level. When the receive level of the serving cell is lower than the value of this parameter, the normal cell reselection level is bad. GUI Value Range: 0~63 Unit: None Actual Value Range: 0~63 Default Value: 15

MINACCRXLEV

BSC6910

SET GCELLNC2PARA


GSM/WCDMA Interoperability PS Handover Between GSM and LTE Based on Quality PS Handover Between GSM and LTE Based on Coverage eNC2 Between GSM and LTE GSM/LTE Service Based PS Handover Network Controlled Cell Reselection (NC2) PS Handover Between GSM and LTE Based on Cell Load

Meaning: Minimum receive level for a neighboring cell to become a candidate cell during cell reselection. In addition, the parameter value is used to calculate the times of occurrences of bad normal cell reselection level. When the receive level of the serving cell is lower than the value of this parameter, the normal cell reselection level is bad. GUI Value Range: 0~63 Unit: None Actual Value Range: 0~63 Default Value: 15

RESELWORSENLEVTHRSH

BSC6900

SET GCELLNC2PARA



Meaning: If the number of times when the receive level of the serving cell within "Normal Cell Reselection Watch Period" is lower than "Cell Reselection Level Threshold" is greater than the value of this parameter, the normal cell reselection is triggered. GUI Value Range: 1~32 Unit: None Actual Value Range: 1~32 Default Value: 1


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Parameter ID

NE

MML Command

Feature ID


RESELWORSENLEVTHRSH

BSC6910

SET GCELLNC2PARA



Meaning: If the number of times when the receive level of the serving cell within "Normal Cell Reselection Watch Period" is lower than "Cell Reselection Level Threshold" is greater than the value of this parameter, the normal cell reselection is triggered. GUI Value Range: 1~32 Unit: None Actual Value Range: 1~32 Default Value: 1

SPTLTEOUTBSCPSHO

BSC6900

SET GCELLGPRS


PS Handover Between GSM and LTE Based on Quality PS Handover Between GSM and LTE Based on Coverage GSM/LTE Service Based PS Handover PS Handover Between GSM and LTE Based on Mode Priority PS Handover Between GSM and LTE Based on Cell Load

Meaning: Whether to support the MS handover from the local cell to an LTE cell during PS services. If this parameter is set to SUPPORT, the LTE coming cell handover during PS services is allowed. In addition, the MS must support the PS handover. GUI Value Range: UNSUPPORT(Not Support), SUPPORT(Support) Unit: None Actual Value Range: UNSUPPORT, SUPPORT Default Value: UNSUPPORT(Not Support)

SPTLTEOUTBSCPSHO

BSC6910

SET GCELLGPRS



Meaning: Whether to support the MS handover from the local cell to an LTE cell during PS services. If this parameter is set to SUPPORT, the LTE coming cell handover during PS services is allowed. In addition, the MS must support the PS handover. GUI Value Range: UNSUPPORT(Not Support), SUPPORT(Support) Unit: None Actual Value Range: UNSUPPORT, SUPPORT Default Value: UNSUPPORT(Not Support)

PSHOSUP

BSC6900

ADD NSE MOD NSE

GBFD 119502

PS Handover

Meaning: Whether to support PS Handover(PS HO). The PS HO is used to reduce the interval of the cell reselection of the MS. GUI Value Range: NO(No Support), YES(Support) Unit: None Actual Value Range: NO, YES Default Value: NO(No Support)

PSHOSUP

BSC6910

ADD NSE MOD NSE

GBFD 119502

PS Handover

Meaning: Whether to support PS Handover(PS HO). The PS HO is used to reduce the interval of the cell reselection of the MS. GUI Value Range: NO(No Support), YES(Support) Unit: None Actual Value Range: NO, YES Default Value: NO(No Support)


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Parameter ID

NE

MML Command

Feature ID


NACCSPT

BSC6900

SET GCELLGPRS

GBFD 116301

Network Assisted Cell Change (NACC)

Meaning: Whether to support the network assisted cell change (NACC). The NACC is used in the network control modes NC0 or NC1. The NACC enables the network to notify the MS of the system information about the neighboring cell in advance when the MS is in the packet transmission state. This increases the PS service access speed of an MS in the target cell and shortens the PS service interruption duration during cell reselection. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: NO(No)

NACCSPT

BSC6910

SET GCELLGPRS

GBFD 116301

Network Assisted Cell Change (NACC)

Meaning: Whether to support the network assisted cell change (NACC). The NACC is used in the network control modes NC0 or NC1. The NACC enables the network to notify the MS of the system information about the neighboring cell in advance when the MS is in the packet transmission state. This increases the PS service access speed of an MS in the target cell and shortens the PS service interruption duration during cell reselection. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: NO(No)

eNACCSPT

BSC6900

SET GCELLGPRS

GBFD 511308

eNACC Meaning: Whether a GSM cell supports the network Between GSM assisted cell change (NACC) function when an MS and LTE in a neighboring LTE cell reselects to this cell in the RRC connected state. During the cell reselection, the LTE network acquires the system information of the GSM cell in the RAN information management (RIM) procedure and then sends the information to the MS. In this way, the MS can access the target GSM cell more quickly. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: NO(No)

eNACCSPT

BSC6910

SET GCELLGPRS

GBFD 511308

eNACC Meaning: Whether a GSM cell supports the network Between GSM assisted cell change (NACC) function when an MS and LTE in a neighboring LTE cell reselects to this cell in the RRC connected state. During the cell reselection, the LTE network acquires the system information of the GSM cell in the RAN information management (RIM) procedure and then sends the information to the MS. In this way, the MS can access the target GSM cell more quickly. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: NO(No)

NC2SPT

BSC6900

SET GCELLGPRS

GBFD 511310 GBFD 511307 GBFD 116201

Multi Technology Neighbour Cell Based Handover eNC2 Between GSM and LTE Network Controlled Cell Reselection (NC2)

Meaning: Whether to support network control 2 (NC2). In NC2 mode, an MS sends the BSC measurement reports containing information about the serving cell and neighboring cells, and the network controls cell reselection for the MS. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: NO(No)


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Parameter ID

NE

MML Command

Feature ID


NC2SPT

BSC6910

SET GCELLGPRS

GBFD 511310 GBFD 511307 GBFD 116201

Multi Technology Neighbour Cell Based Handover eNC2 Between GSM and LTE Network Controlled Cell Reselection (NC2)

eNC2SPT

BSC6900

SET GCELLGPRS

GBFD 511307

eNC2 Meaning: Whether to support the network control 2 Between GSM (NC2) function when an MS reselects to a and LTE neighboring LTE cell. In NC2 mode, an MS sends the measurement reports containing information about the serving cell and neighboring cells to the BSC, and the BSC controls cell reselection for the MS. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: NO(No)

eNC2SPT

BSC6910

SET GCELLGPRS

GBFD 511307

eNC2 Meaning: Whether to support the network control 2 Between GSM (NC2) function when an MS reselects to a and LTE neighboring LTE cell. In NC2 mode, an MS sends the measurement reports containing information about the serving cell and neighboring cells to the BSC, and the BSC controls cell reselection for the MS. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: NO(No)

PFCSUP

BSC6900

ADD NSE MOD NSE


Multi Technology Neighbour Cell Based Handover PoC QoS Conversational QoS Streaming QoS(GBR)

Meaning: Whether to support network control 2 (NC2). In NC2 mode, an MS sends the BSC measurement reports containing information about the serving cell and neighboring cells, and the network controls cell reselection for the MS. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: NO(No)

Meaning: Whether the NSE supports the Packet Flow Context (PFC) procedure that can improve Quality of Service (QoS) of packet services. In SGSN Pool scenario, the PFC procedure will take effect when all of the following conditions are met: All the NSEs to which all the PTP BVCs in the cell belong support PFC (that is, "PFCSUP" is set to YES). The SGSN supports PFC. The "GBRQOS" parameter in the "SET GCELLPSOTHERPARA" command is set to YES. Alternatively, the "PFCSwitch" parameter in the "SET GCELLPSOTHERPARA" command is set to ON. GUI Value Range: NO(No Support), YES(Support) Unit: None Actual Value Range: NO, YES Default Value: NO(No Support)


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Parameter ID

NE

MML Command

Feature ID


PFCSUP

BSC6910

ADD NSE MOD NSE


Multi Technology Neighbour Cell Based Handover PoC QoS Conversational QoS Streaming QoS(GBR)

Meaning: Whether the NSE supports the Packet Flow Context (PFC) procedure that can improve Quality of Service (QoS) of packet services. In SGSN Pool scenario, the PFC procedure will take effect when all of the following conditions are met: All the NSEs to which all the PTP BVCs in the cell belong support PFC (that is, "PFCSUP" is set to YES). The SGSN supports PFC. The "GBRQOS" parameter in the "SET GCELLPSOTHERPARA" command is set to YES. Alternatively, the "PFCSwitch" parameter in the "SET GCELLPSOTHERPARA" command is set to ON. GUI Value Range: NO(No Support), YES(Support) Unit: None Actual Value Range: NO, YES Default Value: NO(No Support)

SPTBLINDHO

BSC6900




Meaning: Whether to support the blind handover from the source GSM cell to the target LTE cell. The blind handover from the source GSM cell to the target LTE cell indicates that the MS in the GSM cell is handed over to the target LTE cell without measuring the target LTE cell. GUI Value Range: UNSUPPORT(UNSUPPORT), SUPPORT(SUPPORT) Unit: None Actual Value Range: UNSUPPORT, SUPPORT Default Value: UNSUPPORT(UNSUPPORT)

SPTBLINDHO

BSC6910




Meaning: Whether to support the blind handover from the source GSM cell to the target LTE cell. The blind handover from the source GSM cell to the target LTE cell indicates that the MS in the GSM cell is handed over to the target LTE cell without measuring the target LTE cell. GUI Value Range: UNSUPPORT(UNSUPPORT), SUPPORT(SUPPORT) Unit: None Actual Value Range: UNSUPPORT, SUPPORT Default Value: UNSUPPORT(UNSUPPORT)


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Parameter ID

NE

MML Command

Feature ID


SPTLTEINBSCPSHO

BSC6900

SET GCELLGPRS

GBFD 511303 GBFD 511302 GBFD 511301 GBFD 511306 GBFD 511305 GBFD 511304

PS Handover Between GSM and LTE Based on Quality PS Handover Between GSM and LTE Based on Coverage Cell Reselection Between GSM and LTE GSM/LTE Service Based PS Handover PS Handover Between GSM and LTE Based on Mode Priority PS Handover Between GSM and LTE Based on Cell Load

Meaning: Whether to support the MS handover from an LTE cell to the local cell during PS services. If this parameter is set to SUPPORT, the LTE incoming cell handover during PS services is allowed. In addition, the MS must support the PS handover. GUI Value Range: UNSUPPORT(Not Support), SUPPORT(Support) Unit: None Actual Value Range: UNSUPPORT, SUPPORT Default Value: UNSUPPORT(Not Support)

SPTLTEINBSCPSHO

BSC6910

SET GCELLGPRS

GBFD 511303 GBFD 511302 GBFD 511301 GBFD 511306 GBFD 511305 GBFD 511304

PS Handover Between GSM and LTE Based on Quality PS Handover Between GSM and LTE Based on Coverage Cell Reselection Between GSM and LTE GSM/LTE Service Based PS Handover PS Handover Between GSM and LTE Based on Mode Priority PS Handover Between GSM and LTE Based on Cell Load

Meaning: Whether to support the MS handover from an LTE cell to the local cell during PS services. If this parameter is set to SUPPORT, the LTE incoming cell handover during PS services is allowed. In addition, the MS must support the PS handover. GUI Value Range: UNSUPPORT(Not Support), SUPPORT(Support) Unit: None Actual Value Range: UNSUPPORT, SUPPORT Default Value: UNSUPPORT(Not Support)

SRVCCHOEN

BSC6900

SET GCELLHOBASIC

GBFD 511301 GBFD 511309

Cell Reselection Between GSM and LTE SRVCC

Meaning: This parameter indicates whether the SRVCC handover is supported. If this parameter is set to "YES", the speech call handled by the IMS can be handed over a GSM cell. In this manner, the continuity of the speech service is maintained. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: NO(No)

SRVCCHOEN

BSC6910

SET GCELLHOBASIC

GBFD 511301 GBFD 511309


Meaning: This parameter indicates whether the SRVCC handover is supported. If this parameter is set to "YES", the speech call handled by the IMS can be handed over a GSM cell. In this manner, the continuity of the speech service is maintained. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: NO(No)


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Parameter ID

NE

MML Command

Feature ID


LTESAIMCC

BSC6900

SET GCELLHOBASIC

GBFD 511301 GBFD 511309


Meaning: MCC parameter in SAI for an SRVCC handover. The BSC interprets the handover request message as an SRVCC handover request when all the following conditions are met: "SRVCCHOEN" in the "SET GCELLHOBASIC" command is set to YES(Yes). The source cell ID type in the incoming BSC handover request message is SAI. The values of "LTE SAI MCC", "LTE SAI MNC", "LTE SAI LAC", "LTE SAI SAC" for the source cell carried in the incoming BSC handover request message are consistent with those configured on the BSC. GUI Value Range: 3 digits Unit: None Actual Value Range: 3 digits Default Value: 000

LTESAIMCC

BSC6910

SET GCELLHOBASIC

GBFD 511301 GBFD 511309


Meaning: MCC parameter in SAI for an SRVCC handover. The BSC interprets the handover request message as an SRVCC handover request when all the following conditions are met: "SRVCCHOEN" in the "SET GCELLHOBASIC" command is set to YES(Yes). The source cell ID type in the incoming BSC handover request message is SAI. The values of "LTE SAI MCC", "LTE SAI MNC", "LTE SAI LAC", "LTE SAI SAC" for the source cell carried in the incoming BSC handover request message are consistent with those configured on the BSC. GUI Value Range: 3 digits Unit: None Actual Value Range: 3 digits Default Value: 000

LTESAIMNC

BSC6900

SET GCELLHOBASIC

GBFD 511301 GBFD 511309


Meaning: MNC parameter in SAI for an SRVCC handover. The BSC interprets the handover request message as an SRVCC handover request when all the following conditions are met: "SRVCCHOEN" in the "SET GCELLHOBASIC" command is set to YES(Yes). The source cell ID type in the incoming BSC handover request message is SAI. The values of "LTE SAI MCC", "LTE SAI MNC", "LTE SAI LAC", "LTE SAI SAC" for the source cell carried in the incoming BSC handover request message are consistent with those configured on the BSC. GUI Value Range: 2~3 digits Unit: None Actual Value Range: 2~3 digits Default Value: 000

LTESAIMNC

BSC6910

SET GCELLHOBASIC

GBFD 511301 GBFD 511309


Meaning: MNC parameter in SAI for an SRVCC handover. The BSC interprets the handover request message as an SRVCC handover request when all the following conditions are met: "SRVCCHOEN" in the "SET GCELLHOBASIC" command is set to YES(Yes). The source cell ID type in the incoming BSC handover request message is SAI. The values of "LTE SAI MCC", "LTE SAI MNC", "LTE SAI LAC", "LTE SAI SAC" for the source cell carried in the incoming BSC handover request message are consistent with those configured on the BSC. GUI Value Range: 2~3 digits Unit: None Actual Value Range: 2~3 digits Default Value: 000


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Parameter ID

NE

MML Command

Feature ID


LTESAILAC

BSC6900

SET GCELLHOBASIC

GBFD 511301 GBFD 511309


Meaning: LAC parameter in SAI for an SRVCC handover. The BSC interprets the handover request message as an SRVCC handover request when all the following conditions are met: "SRVCCHOEN" in the "SET GCELLHOBASIC" command is set to YES(Yes). The source cell ID type in the incoming BSC handover request message is SAI. The values of "LTE SAI MCC", "LTE SAI MNC", "LTE SAI LAC", "LTE SAI SAC" for the source cell carried in the incoming BSC handover request message are consistent with those configured on the BSC. GUI Value Range: 1~65533;65535 Unit: None Actual Value Range: 1~65533, 65535 Default Value: 1

LTESAILAC

BSC6910

SET GCELLHOBASIC

GBFD 511301 GBFD 511309


Meaning: LAC parameter in SAI for an SRVCC handover. The BSC interprets the handover request message as an SRVCC handover request when all the following conditions are met: "SRVCCHOEN" in the "SET GCELLHOBASIC" command is set to YES(Yes). The source cell ID type in the incoming BSC handover request message is SAI. The values of "LTE SAI MCC", "LTE SAI MNC", "LTE SAI LAC", "LTE SAI SAC" for the source cell carried in the incoming BSC handover request message are consistent with those configured on the BSC. GUI Value Range: 1~65533;65535 Unit: None Actual Value Range: 1~65533, 65535 Default Value: 1

LTESAISAC

BSC6900

SET GCELLHOBASIC

GBFD 511301 GBFD 511309


Meaning: SAC parameter in SAI for an SRVCC handover. The BSC interprets the handover request message as an SRVCC handover request when all the following conditions are met: "SRVCCHOEN" in the "SET GCELLHOBASIC" command is set to YES(Yes). The source cell ID type in the incoming BSC handover request message is SAI. The values of "LTE SAI MCC", "LTE SAI MNC", "LTE SAI LAC", "LTE SAI SAC" for the source cell carried in the incoming BSC handover request message are consistent with those configured on the BSC. GUI Value Range: 0~65535 Unit: None Actual Value Range: 0~65535 Default Value: 0

LTESAISAC

BSC6910

SET GCELLHOBASIC

GBFD 511301 GBFD 511309


Meaning: SAC parameter in SAI for an SRVCC handover. The BSC interprets the handover request message as an SRVCC handover request when all the following conditions are met: "SRVCCHOEN" in the "SET GCELLHOBASIC" command is set to YES(Yes). The source cell ID type in the incoming BSC handover request message is SAI. The values of "LTE SAI MCC", "LTE SAI MNC", "LTE SAI LAC", "LTE SAI SAC" for the source cell carried in the incoming BSC handover request message are consistent with those configured on the BSC. GUI Value Range: 0~65535 Unit: None Actual Value Range: 0~65535 Default Value: 0

11 Counters http://localhost:7890/pages/GEE1231L/Draft%20A/GEE1231L/Draft%20A/resources/enus_bookmap_0001793237.html?ft=0&fe=10&hib=3.5.5&id=ENUS_B…

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Table 111 Counters Counter ID Counter Name

Counter Description NE

Feature ID

Feature Name

Counter ID

Counter Name


Feature ID

Feature Name

1279172426

NC.CELL.RESELECT.ATMPT

H9010:Number of NetworkControlled Cell Reselection Attempts

BSC6900

GBFD116201 GBFD511405 GBFD114301 GBFD511307

NetworkControlled Cell Reselection (NC2) NC2 between GSM and TDSCDMA GSM/WCDMA Interoperability eNC2 Between GSM and LTE

1279172427

NC.CELL.URG.RESELECT.ATMPT

H9011:Number of NetworkControlled Cell Reselection Attempts Due to Downlink Quality

BSC6900



1279172428

NC.CELL.LOAD.RESELECT.ATMPT

H9012:Number of NetworkControlled Cell Reselection Attempts due to Traffic Load

BSC6900



1279172429

NC.CELL.GENERAL.RESELECT.ATMPT

H9013:Number of NetworkControlled Cell Reselection Attempts for Better Cell

BSC6900



1279172430

NC.CELL.RESELECT.FAIL.ATMPT

H9014:Number of Failed Network Controlled Cell Reselections

BSC6900



1279172433

NC.CELL.INTERRAN.RESELECT.ATMPT

H9017:Number of BSC6900 InterRAT Network Controlled Cell Reselection Attempts



1282429608

CELL.2G4GINTERRAN.INCELL.PSHO.REQ

H9602:Number of Incoming InterRAT InterCell PS Handover Requests Between 2G and 4G

GBFD119502 GBFD511302 GBFD511303 GBFD511304 GBFD511305 GBFD511306

PS Handover PS Handover Between GSM and LTE Based on Coverage PS Handover Between GSM and LTE Based on Quality PS Handover Between GSM and LTE Based on Cell Load PS Handover Between GSM and LTE Based on Mode Priority GSM/LTE Service Based PS Handover

BSC6900


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Counter ID

Counter Name


Feature ID

Feature Name

1282429613

NC.CELL.2G.TO.4G.RESELECT.ATMPT

H9701:Number of BSC6900 NetworkControlled 2G to 4G Cell Reselection Attempts

GBFD116201 GBFD511307

NetworkControlled Cell Reselection (NC2) eNC2 Between GSM and LTE

1282429614

NC.CELL.2G.TO.4G.RESELECT.FAIL

H9721:Number of Failed Network Controlled 2G to 4G Cell Reselections

BSC6900

GBFD116201 GBFD511307


1282429796

CELL.2G4GINTERRAN.INCELL.PSHO.FAIL

H9622:Number of BSC6900 Failed Incoming Inter RAT InterCell PS Handovers Between 2G and 4G



1282429797

NC.CELL.TRAFFIC.RESELECT.ATMPT

H9020:Number of NetworkControlled Cell Reselection Attempts Due to Service Type

BSC6900



1282429809

CELL.2G4GINTERRAN.OUTCELL.PSHO.ATMPT

H9513:Number of Outgoing InterRAT InterCell PS Handover Attempts Between 2G and 4G

BSC6900



1282429810

CELL.2G4GINTERRAN.OUTCELL.PSHO.FAIL

H9522:Number of BSC6900 Failed Outgoing Inter RAT InterCell PS Handovers Between 2G and 4G




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Counter ID

Counter Name


Feature ID

Feature Name

1282431641

CELL.2G4GINTERRAN.INCELL.PSHO.ACK

H9612:Number of Responses to Incoming InterRAT InterCell PS Handover Requests Between 2G and 4G

BSC6900



1282431644

CELL.2G4GINTERRAN.OUTCELL.PSHO.CMD

H9503:Number of BSC6900 Outgoing InterRAT InterCell PS Handover Commands Between 2G and 4G



1279172426

NC.CELL.RESELECT.ATMPT

H9010:Number of NetworkControlled Cell Reselection Attempts

BSC6910



1279172427

NC.CELL.URG.RESELECT.ATMPT

H9011:Number of NetworkControlled Cell Reselection Attempts Due to Downlink Quality

BSC6910



1279172428

NC.CELL.LOAD.RESELECT.ATMPT

H9012:Number of NetworkControlled Cell Reselection Attempts due to Traffic Load

BSC6910



1279172429

NC.CELL.GENERAL.RESELECT.ATMPT

H9013:Number of NetworkControlled Cell Reselection Attempts for Better Cell

BSC6910




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Counter ID

Counter Name


Feature ID

Feature Name

1279172430

NC.CELL.RESELECT.FAIL.ATMPT

H9014:Number of Failed Network Controlled Cell Reselections

BSC6910



1279172433

NC.CELL.INTERRAN.RESELECT.ATMPT

H9017:Number of BSC6910 InterRAT Network Controlled Cell Reselection Attempts



1282429608

CELL.2G4GINTERRAN.INCELL.PSHO.REQ

H9602:Number of Incoming InterRAT InterCell PS Handover Requests Between 2G and 4G

BSC6910



1282429613

NC.CELL.2G.TO.4G.RESELECT.ATMPT

H9701:Number of BSC6910 NetworkControlled 2G to 4G Cell Reselection Attempts

GBFD116201 GBFD511307


1282429614

NC.CELL.2G.TO.4G.RESELECT.FAIL

H9721:Number of Failed Network Controlled 2G to 4G Cell Reselections

BSC6910

GBFD116201 GBFD511307


1282429796

CELL.2G4GINTERRAN.INCELL.PSHO.FAIL

H9622:Number of BSC6910 Failed Incoming Inter RAT InterCell PS Handovers Between 2G and 4G




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Counter ID

Counter Name


Feature ID

Feature Name

1282429797

NC.CELL.TRAFFIC.RESELECT.ATMPT

H9020:Number of NetworkControlled Cell Reselection Attempts Due to Service Type

BSC6910



1282429809

CELL.2G4GINTERRAN.OUTCELL.PSHO.ATMPT

H9513:Number of Outgoing InterRAT InterCell PS Handover Attempts Between 2G and 4G

BSC6910



1282429810

CELL.2G4GINTERRAN.OUTCELL.PSHO.FAIL

H9522:Number of BSC6910 Failed Outgoing Inter RAT InterCell PS Handovers Between 2G and 4G



1282431641

CELL.2G4GINTERRAN.INCELL.PSHO.ACK

H9612:Number of Responses to Incoming InterRAT InterCell PS Handover Requests Between 2G and 4G



BSC6910


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Counter ID

Counter Name


Feature ID

Feature Name

1282431644

CELL.2G4GINTERRAN.OUTCELL.PSHO.CMD

H9503:Number of BSC6910 Outgoing InterRAT InterCell PS Handover Commands Between 2G and 4G



1282431662

CELL.SRVCC.INCELL.HO.REQ.SD

SR1000:SRVCC Handover Requests (SDCCH)

BSC6900

GBFD511309

SRVCC

1282431663

CELL.SRVCC.INCELL.HO.REQ.TCH

SR1001:SRVCC Handover Requests (TCH)

BSC6900

GBFD511309

SRVCC

1282431664

CELL.SRVCC.INCELL.HO.REQ.ACK.SD

SR1002:SRVCC BSC6900 Handover Responses (SDCCH)

GBFD511309

SRVCC

1282431665

CELL.SRVCC.INCELL.HO.REQ.ACK.TCH

SR1003:SRVCC BSC6900 Handover Responses (TCH)

GBFD511309

SRVCC

1282431666

CELL.SRVCC.INCELL.HO.FAIL.SD

SR1004:Failed SRVCC Handovers (SDCCH)

BSC6900

GBFD511309

SRVCC

1282431667

CELL.SRVCC.INCELL.HO.FAIL.TCH

SR1005:Failed SRVCC Handovers (TCH)

BSC6900

GBFD511309

SRVCC

1282431668

CELL.SRVCC.INCELL.HO.FAIL.INVALID.CONTENTS SR1006:Failed SRVCC Handovers (Invalid Message)

BSC6900

GBFD511309

SRVCC

1282431669

CELL.SRVCC.INCELL.HO.FAIL.CONG.SD

SR1007:Failed SRVCC Handovers (No Channel Available) (SDCCH)

BSC6900

GBFD511309

SRVCC

1282431670

CELL.SRVCC.INCELL.HO.FAIL.CONG.TCH

SR1008:Failed SRVCC Handovers (No Channel Available) (TCH)

BSC6900

GBFD511309

SRVCC

1282431671

CELL.SRVCC.INCELL.HO.FAIL.NO.CIC

SR1009:Failed SRVCC Handovers (CIC Unavailable)

BSC6900

GBFD511309

SRVCC

1282431672

CELL.SRVCC.INCELL.HO.FAIL.CIC.ALLOC

SR1010:Failed SRVCC Handovers (CIC Allocated)

BSC6900

GBFD511309

SRVCC

1282431673

CELL.SRVCC.INCELL.HO.FAIL.APPLY.TRSL.FAIL

SR1011:Failed SRVCC Handovers (Terrestrial Resource Request Failed)

BSC6900

GBFD511309

SRVCC

1282431674

CELL.SRVCC.INCELL.HO.FAIL.MSC.CLR.CMD

SR1012:Failed SRVCC Handovers (Clear Commands Sent By MSC)

BSC6900

GBFD511309

SRVCC

1282431675

CELL.SRVCC.INCELL.HO.FAIL.EXP.SD

SR1013:Failed SRVCC Handovers (Timer Expired) (SDCCH)

BSC6900

GBFD511309

SRVCC


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Counter ID

Counter Name


Feature ID

Feature Name

1282431676

CELL.SRVCC.INCELL.HO.FAIL.EXP.TCH.SIG

SR1014:Failed SRVCC Handovers (Timer Expired) (TCH) (Signaling Channel)

BSC6900

GBFD511309

SRVCC

1282431677

CELL.SRVCC.INCELL.HO.FAIL.EXP.TCH.TRAF.CH

SR1015:Failed SRVCC Handovers (Timer Expired) (TCH) (Traffic Channel)

BSC6900

GBFD511309

SRVCC

1282431678

CELL.SRVCC.INCELL.HO.FAIL.NO.SPEECH.VER

SR1016:Failed SRVCC Handovers (Requested Speech Version Unavailable)

BSC6900

GBFD511309

SRVCC

1282431662

CELL.SRVCC.INCELL.HO.REQ.SD

SR1000:SRVCC Handover Requests (SDCCH)

BSC6910

GBFD511309

SRVCC

1282431663

CELL.SRVCC.INCELL.HO.REQ.TCH

SR1001:SRVCC Handover Requests (TCH)

BSC6910

GBFD511309

SRVCC

1282431664

CELL.SRVCC.INCELL.HO.REQ.ACK.SD

SR1002:SRVCC BSC6910 Handover Responses (SDCCH)

GBFD511309

SRVCC

1282431665

CELL.SRVCC.INCELL.HO.REQ.ACK.TCH

SR1003:SRVCC BSC6910 Handover Responses (TCH)

GBFD511309

SRVCC

1282431666

CELL.SRVCC.INCELL.HO.FAIL.SD

SR1004:Failed SRVCC Handovers (SDCCH)

BSC6910

GBFD511309

SRVCC

1282431667

CELL.SRVCC.INCELL.HO.FAIL.TCH

SR1005:Failed SRVCC Handovers (TCH)

BSC6910

GBFD511309

SRVCC

1282431668

CELL.SRVCC.INCELL.HO.FAIL.INVALID.CONTENTS SR1006:Failed SRVCC Handovers (Invalid Message)

BSC6910

GBFD511309

SRVCC

1282431669

CELL.SRVCC.INCELL.HO.FAIL.CONG.SD

SR1007:Failed SRVCC Handovers (No Channel Available) (SDCCH)

BSC6910

GBFD511309

SRVCC

1282431670

CELL.SRVCC.INCELL.HO.FAIL.CONG.TCH

SR1008:Failed SRVCC Handovers (No Channel Available) (TCH)

BSC6910

GBFD511309

SRVCC

1282431671

CELL.SRVCC.INCELL.HO.FAIL.NO.CIC

SR1009:Failed SRVCC Handovers (CIC Unavailable)

BSC6910

GBFD511309

SRVCC

1282431672

CELL.SRVCC.INCELL.HO.FAIL.CIC.ALLOC

SR1010:Failed SRVCC Handovers (CIC Allocated)

BSC6910

GBFD511309

SRVCC

1282431673

CELL.SRVCC.INCELL.HO.FAIL.APPLY.TRSL.FAIL

SR1011:Failed SRVCC Handovers (Terrestrial Resource Request Failed)

BSC6910

GBFD511309

SRVCC

1282431674

CELL.SRVCC.INCELL.HO.FAIL.MSC.CLR.CMD

SR1012:Failed SRVCC Handovers (Clear Commands Sent By MSC)

BSC6910

GBFD511309

SRVCC

1282431675

CELL.SRVCC.INCELL.HO.FAIL.EXP.SD

SR1013:Failed SRVCC Handovers (Timer Expired) (SDCCH)

BSC6910

GBFD511309

SRVCC

1282431676

CELL.SRVCC.INCELL.HO.FAIL.EXP.TCH.SIG

SR1014:Failed SRVCC Handovers (Timer Expired) (TCH) (Signaling Channel)

BSC6910

GBFD511309

SRVCC


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Counter ID

Counter Name


Feature ID

Feature Name

1282431677

CELL.SRVCC.INCELL.HO.FAIL.EXP.TCH.TRAF.CH

SR1015:Failed SRVCC Handovers (Timer Expired) (TCH) (Traffic Channel)

BSC6910

GBFD511309

SRVCC

1282431678

CELL.SRVCC.INCELL.HO.FAIL.NO.SPEECH.VER

SR1016:Failed SRVCC Handovers (Requested Speech Version Unavailable)

BSC6910

GBFD511309

SRVCC

12 Glossary For the acronyms, abbreviations, terms, and definitions, see Glossary.

13 Reference Documents 1. 3GPP TS 45.008: "Radio subsystem link control" 2. 3GPP TS 44.018: "Mobile radio interface layer 3 specification; Radio Resource Control (RRC) protocol" 3. 3GPP TS 48.008: "Mobile Switching Center Base Station system (MSCBSS) interface; Layer 3 specification" 4. BSC6900 Feature List 5. BSC6900 Optional Feature Description 6. BSC6900 GSM Parameter Reference 7. BSC6900 GSM MML Command Reference 8. BSC6900 GSM Performance Counter Reference


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Interoperability Between GSM and LTE Feature Parameter Description

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