IBCA II(GBSS18.1_02)

GSM BSS GBSS18.1

IBCA II Feature Parameter Description Issue

02

Date

2016-08-31

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2017. 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 trademarks and trade names mentioned mentioned in this this document are are the property of of their respective holders.

Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. 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, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations 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 recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd. Address:

Huawei Industrial Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website:

http://www.huawei.com

Email:

[email protected]

Issue 02 (2016-08-31)

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

i

Copyright © Huawei Technologies Co., Ltd. 2017. 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 trademarks and trade names mentioned mentioned in this this document are are the property of of their respective holders.

Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. 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, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations 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 recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd. Address:

Huawei Industrial Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website:

http://www.huawei.com

Email:

[email protected]

Issue 02 (2016-08-31)


i

GSM BSS IBCA II Feature Parameter Description

Contents

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

2 Overview.................. Overview......................................... ............................................. ............................................ ............................................ ............................................ .............................. ........ 3 2.1 Introduction................................................................................ Introduction.................................................................................................................................................................... .................................................................................... 3 2.2 Benefits...........................................................................................................................................................................3 Benefits...........................................................................................................................................................................3 2.3 Specifications..................................................................................................................................................................3 Specificat ions..................................................................................................................................................................3 2.4 NEs Supporting Supporting the Feature............................................................................................................................................6

3 Technical Technical Description........ Description.............................. ............................................ ............................................. ............................................. ........................................7 ..................7 3.1 Overview.................................................................................................... Overview. ....................................................................................................................................................................... .................................................................... 7 3.2 Calculating Calculatin g the Path Losses............................................................................................................................................9 3.3 Estimating CIRs....................................................................................... CIRs............................................................................................................................................................10 .....................................................................10 3.3.1 Searching Searchin g for Interference Sources............................................................................................................................10 Sources............................................................................................................................10 3.3.2 Estimating Estimating Channel CIRs...........................................................................................................................................11 CIRs...........................................................................................................................................11 3.4 Determining Determining Whether to Perform a Dynamic Channel Conversion.............................................................................13 3.5 Evaluating Channel Evaluating Channel Priority.......................................................................................................... Priority......................................................................................................................................... ............................... 14 3.6 Selecting an Optimal Channel...................................................................................................................................... Channel...................................................................................................................................... 14 3.7 Identifying a Call on the Verge Verge of Being Dropped and Preventing Call Drops........................................................... 15 3.7.1 Identifying Identifying a Call on the Verge Verge of Being Dropped.................................................................................................... 15 3.7.2 Identifying Identifying Interference Sources.......................................................................................... Sources................................................................................................................................16 ......................................16 3.7.3 Decreasing Decreas ing Power of the Interference Sources..........................................................................................................17

4 Related Features........ Features.............................. ............................................ ............................................. ............................................. ............................................ .......................... ....19 19 5 Network Impact........... Impact.................................. ............................................. ............................................ ............................................ ............................................ ........................ 26 5.1 System Ca pacity............................................................................ pacity........................................................................................................................................................... ............................................................................... 26 5.2 Network Performance...................................................................................................................................................26 P erformance...................................................................................................................................................26

6 Engineering Engineering Guidelines............ Guidelines.................................. ............................................ ............................................ ............................................ ............................... ......... 28 6.1 When to Use IBCA II................................................................................................................................................... II................................................................................................................................................... 28 6.2 Required Information................................................................................................. Information................................................................................................................................................... .................................................. 30 6.3 Network Planning......................................................................................................................................................... Planning......................................................................................................................................................... 31 6.4 Deploying IBCA II....................................................................................................................................................... II....................................................................................................................................................... 32 Issue 02 (2016-08-31)


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Contents

6.4.1 Deployment Requirements........................................................................................................................................ 33 6.4.2 Data Preparation........................................................................................................................................................ 34 6.4.3 Activation.................................................................................................................................................................. 38 6.4.4 Activation Observation..............................................................................................................................................43 6.4.5 Deactivation...............................................................................................................................................................44 6.5 Performance Monitoring...............................................................................................................................................47 6.6 Parameter Optimization................................................................................................................................................ 48 6.6.1 Call Drop Rate........................................................................................................................................................... 48 6.6.2 Handover Success Rate............................................................................................................................................. 49 6.6.3 Congestion Rate.........................................................................................................................................................50 6.7 Troubleshooting............................................................................................................................................................ 50

7 Parameters.....................................................................................................................................51 8 Counters...................................................................................................................................... 120 9 Glossary.......................................................................................................................................124 10 Reference Documents............................................................................................................. 125

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1 About This Document

1

About This Document

1.1 Scope This document describes the GBFD-119511 IBCA II feature, including its technical principles, related features, network impact, and engineering guidelines.

1.2 Intended Audience This document is intended for personnel who: l l

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: l

Feature change Changes in features and parameters of a specified version as well as the affected entities.

l

Editorial change Changes in wording or addition of information and any related parameters affected by editorial changes. Editorial change does not specify the affected entities.

02 (2016-08-31) This issue includes the following changes.

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1 About This Document

Change Type

Change Description

Parameter Change

Feature change

Updated descriptions about GBFD-110802 Pre processing of Measurement Report in 4 Related Features .

None

Editorial change

None

None

01 (2016-02-29) This issue does not include any changes.

Draft A (2015-12-31) Compared with Issue 01 (2015-04-20) of GBSS17.1, Draft A (2015-12-31) of GBSS18.1 includes the following changes.

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Change Type

Change Description

Parameter Change

Feature change

Added the description that the BSC6910 supports the EGPUb and EXPUb boards. For details, see 2.3 Specifications, 3.3.1 Searching for Interference Sources , 5.2 Network Performance , and 6.4.1 Deployment Requirements.

None

Editorial change

None

None


2


2 Overview

2

Overview

2.1 Introduction When frequencies are insufficient on a network, frequencies are tightly reused in neighboring cells. In such situations, severe co- and adjacent-channel interference occurs on the network and cannot be eliminated even if the frequency hopping (FH) technology is applied. When the number of calls on such a network exceeds a certain limit, mutual interference between calls jeopardizes speech quality and the carrier-to-interference ratio (CIR) required by a call cannot be achieved. As a result, call drops occur. This reduces network capacity even if there are idle channels on the network in this scenario. To alleviate network interference, increase network capacity, and improve frequency resource usage efficiency, IBCA II is introduced. This feature provides the following functions: l

Estimates the CIR for a new call during channel allocation and the interference the new call will cause to established calls. Based on the estimation results, the BSC allocates the optimal channel to carry the new call. This channel must meet the new call's requirement for CIR and minimize impact on the network.

l

Decreases the initial transmit power of the new call and the transmit power of the interference source.

2.2 Benefits IBCA II provides the following benefits: l

l

Network capacity increases by up to 20 percents without jeopardizing KPIs related to speech quality, TCH call drop rate, and handover success rate. For networks of the same capacity, the Um receive quality (RxQual 6 and 7) increases by up to 30 percents, the mean opinion score (MOS) increases by up to 0.2 points, and the TCH call drop rate decreases by up to 20 percents. In addition, other circuit switched (CS) KPIs do not deteriorate, although packet switched (PS) KPIs deteriorate slightly.

2.3 Specifications l

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The BSC supports a maximum of 24 IBCA II interfering neighboring cells. The BSC6910 , BSC6900 ) parameter. neighboring cell type is specified by the NCELLTYPE( Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

3

GSM BSS IBCA II Feature Parameter Description l

2 Overview

When inter-BSC IBCA II is enabled, the BSC supports a maximum of 16 adjacent BSCs.

An IBCA II cell has the following restrictions on mobile allocation (MA) group and mobile allocation index offset (MAIO) configurations: l

A maximum of three MA groups can be configured, and the number of frequencies in each MA group must be the same.

l

A maximum of 24 MAIOs can be configured.

l

Only one MA group can be configur ed for IBCA II cells using the same timeslot on the same frequency band.

l

A maximum of 24 MA groups can be configured for all IBCA II interfering neighboring cells of an IBCA II cell. The principles for calculating the number of MA groups are as follows: –

For a GSM900 or GSM850 cell, only the number of MA groups configured for IBCA II interfering neighboring cells working on the 900 or 850 MHz frequency band is included.

–

For a DCS1800 or PCS1900 cell, only the number of MA groups configured for IBCA II interfering neighboring cells working on the 1800 or 1900 MHz frequency band is included.

–

If the MA groups for IBCA II neighboring cells are the same, the number of MA groups is calculated as one.

Table 2-1 describes the specifications of TRXs, SCTP links, and service board processing capabilities in typical configuration scenarios. Table 2-1 Specifications in typical conf iguration scenarios

Site Type

IBCAIN IBCAO MC BSCINF UTBSCI PL ORPTP NFORP oad RD( BSC TPRD( B Opt 6910 ,BS SC6910 , Swi C6900 ) BSC6900 tch( ) BS C69 10 , BS C69 00 )

Number of IBCA Neighb oring Cells

Number of Frequen cies in an MA Group

Number of MA Groups

Number of MAIOs Configu red for MA Groups in a Cell

S4/4/4

200

600

ON( On)

18

12

1

12

S6/6/6

200

600

ON( On)

18

30

3

10

NOTE

For the BSC6900, the MCP in the following description indicates the XPUa/XPUb board with LGCAPPTYPE( BSC6900 , BSC6910 ) set to MCP. In this situation, mixed insertion of XPUa and XPUb boards is not allowed. For the BSC6910, the MCP in the following description indicates the EGPUa/ BSC6900 , BSC6910 ) set to GMCP. EGPUb/EXPUa/EXPUb board with LGCAPPTYPE(

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2 Overview

TRXs l

BSC6900: IBCA II can be enabled on a maximum of 3072 TRXs. When inter-BSC IBCA II is enabled, the BSC6900 supports a maximum of 1200 TRXs in external IBCA II interfering neighboring cells. Table 2-2 lists the number of required MCPs in different TRX configurations. Table 2-2 Number of required MCPs in different TRX configurations

l

Number of TRXs

Number of TRXs in External IBCA II Neighboring Cells

Number of MCPs

1024

1200

2

2048

1200

4

3072

1200

6

BSC6910: IBCA II can be enabled on a maximum of 6000 TRXs. When the inter-BSC IBCA II is enabled, the number of TRXs in the external IBCA neighboring cells cannot exceed 3000. Table 2-3 lists the number of required MCPs in different TRX configurations. Table 2-3 Number of required MCPs in different TRX configurations

Number of TRXs

Number of TRXs in External IBCA II Neighboring Cells

Number of MCPs

2000

3000

2

4000

3000

2

6000

3000

3

SCTP Links When inter-BSC IBCA II is enabled, SCTP links need to be planned. Assume that IBCA II is enabled on both BSCs 1 and 2. Use the following method to calculate the number of SCTP links for IBCA II. 1.

For BSC 1, calculate the number of external IBCA II neighboring cells configured for BSC 2 and then calculate the number of TRXs in these cells. The calculated number of TRXs in these cells is A.

2.

For BSC 2, calculate the number of external IBCA II neighboring cells configured for BSC 1 and then calculate the number of TRXs in these cells. The calculated number of TRXs in these cells is B. The number of SCTP links is a roundup value and calculated using the following formula:

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2 Overview

MAX(A,B)/300. For example, for the BSC6900, 1200 external IBCA II neighboring cells require 4 SCTP links. For the BSC6910, 3000 external IBCA II neighboring cells require 10 SCTP links.

Processing Capabilities of Service Boards After IBCA II is enabled, the processing capabilities of service boards decrease. The following provides the processing capabilities of service boards after IBCA II is enabled. l l

Main control XPUa: 200 TRXs Non-main control XPUa: 260 TRXs

l

XPUb: 480 TRXs

l

EGPUa/EGPUb/EXPUa/EXPUb: 750 TRXs

2.4 NEs Supporting the Feature Table 2-4 NEs supporting the feature

Feature

BSC6900

BSC6910

GBTS

eGBTS

IBCA II

√

√

√

√

NOTE √ indicates

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


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3 Technical Description

3

Technical Description

3.1 Overview BSC6900 , BSC6910 ) The IBCA II algorithm is enabled when the IBCAALLOWED( BSC6900 , BSC6910 ) parameter is set to parameter is set to YES(Yes) and the IBCAIIAllowed( ON(On) .

The IBCA II feature enables the BSC to evaluate network interference and then allocate the optimal channel to an MS in the following procedures: l

TCH-to-PDCH or TCH-to-SDCCH conversion: In this procedure, the IBCA II algorithm ensures that the PDCH or SDCCH converted from a TCH does not cause any unacceptable effect on network quality. Therefore, network interference is minimized.

l

Channel allocation during an assignment or handover: In this procedure, the IBCA II algorithm ensures that the channel allocated to a new call has the best signal quality and minimal impact on the network. In addition, if speech quality is poor or a call is on the verge of being dropped after it is successfully set up, this algorithm helps decrease the transmit power of the interference source in a timely manner and minimizes the interference on the call, thereby improving speech quality and preventing call drops.

In this way, the network interference is reduced. Figure 3-1 shows the implementation of the IBCA II algorithm for these procedures.

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Figure 3-1 Implementation of the IBCA II algorithm during channel conversion or allocation

The IBCA II algorithm consists of the following procedures: l

Calculating the path losses The BSC calculates the path loss between an MS and its serving cell and the path loss between the MS and an interfering neighboring cell. For details, see 3.2 Calculating the Path Losses.

l

Estimating CIRs The BSC estimates the channel CIR based on the calculated path losses. For details, see 3.3 Estimating CIRs.

l

Determining whether to perform a dynamic channel conversion Based on the estimated CIRs, the B SC determines whether to perform a dynamic channel conversion. If a PDCH or SDCCH converted from a TCH will cause any unacceptable effect on network quality, the BSC does not perform a TCH-to-PDCH or TCH-toSDCCH conversion. For details, see 3.4 Determining Whether to Perform a Dynamic Channel Conversion.

l

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Evaluating the channel priority Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

8



Based on the estimated CIRs, the B SC determines the channel priority to select the optimal channel. For details, see 3.5 Evaluating Channel Priority. l

Selecting the optimal channel Based on the channel priority, the BSC selects the optimal channel for the MS. For details, see 3.6 Selecting an Optimal Channel.

l

Identifying a call on the verge of being dropped and preventing call drops If speech quality is poor or a call is on the verge of being dropped after being successfully set up, the BSC performs the following functions: –

Searches for interference sources

–

Calculates the interference level of each interference source

–

Identifies one or multiple more strong interference sources

–

Reduces the transmit power of the strongest interference source in a timely manner

For details, see 3.7 Identifying a Call on the Verge of Being Dropped and Preventing Call Drops.

3.2 Calculating the Path Losses Introduction The BSC preferentially uses measurement reports (MRs) to calculate path losses. Upon receiving an MR, the BSC interpolates and filters the measured values to obtain accurate uplink/downlink receive level of the serving cell and downlink BCCH receive level of an IBCA II interfering neighboring cell measured by an MS. The filter length is specified by the IBCACALLINFOFILTERLEN( BSC6900 , BSC6910 ) parameter. Based on the obtained MR data, the BSC calculates the uplink/downlink path loss between an MS and its serving cell and the downlink path loss between the MS and an IBCA II interfering neighboring cell. NOTE

During an inter-BSC handover, the source BSC sends the measurement information about the serving cell and its IBCA II interfering neighboring cell to the target BSC to improve the accuracy of interference evaluation if both of the following conditions are met: l l

IBCA II is enabled in the target cell. IBCAIIInterBscHoInfoSw( BSC6900 , BSC6910 ) is set to ON(On) for the target cell.

Uplink/Downlink Path Loss Between an MS and Its Serving Cell Uplink/downlink path loss between an MS and its serving cell = Uplink/downlink transmit power of the serving cell – Uplink/downlink receive level of the serving cell measured by the MS l

If the BSC cannot obtain the downlink receive level of the serving cell measured by an MS because downlink MRs are lost, the BSC calculates the downlink path loss using the following formula: Downlink path loss between an MS and its serving cell = Uplink path loss between the BSC6900 , BSC6910 ) MS and its serving cell + Value of IBCADLPATHLOSSOFF(

l

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If the BSC cannot obtain the uplink/downlink receive level of the serving cell measured by an MS because both uplink and downlink MRs are lost, the BSC uses the value of IBCASCELLPATHLOSS( BSC6900 , BSC6910 ) as the uplink/downlink path loss. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

9



Downlink Path Loss Between an MS and an IBCA II Interfering Neighboring Cell Downlink path loss between an MS and an IBCA II interfering neighboring cell = BCCH transmit power of the IBCA II interfering neighboring cell – Downlink BCCH receive level of the IBCA II interfering neighboring cell measured by the MS l

When the BSC cannot obtain the downlink BCCH receive level of an IBCA II interfering neighboring cell measured by the MS because downlink MRs contain the downlink BCCH receive level of several IBCA II interfer ing neighboring cells but the downlink BCCH receive level of an IBCA II interfering neighboring cell is lost: –

–

If the downlink BCCH receive level of the same IBCA II interfering neighboring cell is not included in N consecutive MRs, the BSC uses the value of IBCANCELLPATHLOSSESTIMATE( BSC6900 , BSC6910 ) as the downlink BCCH receive level of an IBCA II interfering neighboring cell measured by the MS. If the downlink BCCH receive level of different IBCA II interfering neighboring cells is not included in N consecutive MRs, the BSC calculates the downlink BCCH receive level of an IBCA II interfering neighboring cell measured by the MS using the following formula: Downlink BCCH receive level of an IBCA II interfering neighboring cell measured by an MS = Minimum measured receive level – Value of IBCARXLEVOFFSET( BSC6900 , BSC6910 ) The value N is specified by the IBCANONMEANCELLSTATNUM( BSC6900 , BSC6910 ) parameter.

l

When the BSC cannot obtain the downlink BCCH receive level of an IBCA II interfering neighboring cell measured by the MS because downlink MRs do not contain the downlink BCCH receive level of any IBCA II interfering neighboring cell, the BSC calculates the downlink path loss using the following formula: Downlink path loss between an MS and a neighboring cell = Downlink path loss between the MS and its serving cell + Value of IBCAPATHLOSSOFF( BSC6900 , BSC6910 )

3.3 Estimating CIRs 3.3.1 Searching for Interference Sources Wanted signals for a call are interfering signals for other calls. On a live network, a variety of interference sources can cause varying levels of interference. Rather than measuring all interfering signals, however, the BSC determines the interference source scope before estimating the channel CIRs. BSC6900 , BSC6910 ) parameter is set to In neighboring cells for which the NCELLTYPE( IBCANCELL(IBCA Neighboring Cell) or HANDOVERANDIBCANCELL(Handover and IBCA Neighboring Cell), the BSC searches for the calls that cause interference to a new call and selects N established calls that cause the strongest interference to the new call. The BSC then uses these calls to estimate the channel CIRs. The value N is specified by the IBCAMAXINTFSRCNUM( BSC6900 , BSC6910 ) parameter.

During the TCH-to-PDCH conversion or searching for interference source for a call on the verge of being dropped, the converted PDCH is considered as an interference source for Issue 02 (2016-08-31)


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established calls. In this situation, the BSC minimizes interference by decreasing the downlink transmit power of the PDCH. The downlink transmit power of the PDCH is calculated using the following formula: Downlink transmit power of the PDCH = Maximum BSC6900 , BSC6910 ) transmit power of the PDCH – IBCAIIPSDLIntfOffset( Calls are distributed on different CPUs on the BSC, but interference is evaluated by the XPUa, XPUb, EGPUa, EGPUb, EXPUa, or EXPUb board. Therefore, the BSC needs to report the call information in an IBCA neighboring cell group on each CPU to the XPUa, XPUb, EGPUa, EGPUb, EXPUa, or EXPUb at an interval specified by IBCAINBSCINFORPTPRD( BSC6900 , BSC6910 ). If the IBCA II neighboring cell group includes an external neighboring cell, the BSC needs to report the information about the calls in the serving cell to the BSC controlling the external neighboring cell over the inter-BSC communication links at an interval specified by the IBCAOUTBSCINFORPTPRD( BSC6900 , BSC6910 ) parameter. If IBCAOutBSCMsgSndCtrlSw( BSC6900 , BSC6910 ) is set to ON(On), the call information and cell configuration information reported to the BSC does not contain unnecessary IEs, thereby reducing the number of messages sent between BSCs and load on the CPU. NOTE l

XPUa and XPUb are installed on the BSC6900.

l

EGPUa

l

EGPUa, EGPUb, EXPUa, and EXPUb are BSC6910 boards.

3.3.2 Estimating Channel CIRs After IBCA II is enabled, the MAIOs can be dynamically allocated. Therefore, the BSC must traverse all available channels and MAIOs to calculate CIRs. In this section, an available channel and MAIO are defined as a candidate channel. Estimating channel CIRs consists of: l

Calculating CIRs of different candidate channels for a new call to access

l

Calculating the decrease in CIRs for established calls if a new call accesses the network over different candidate channels

Figure 3-2 shows the procedure for evaluating the CIRs based on the MRs and path losses. The value n indicates the number of candidate channels that can be allocated. Figure 3-2 Estimating CIRs

Calculating CIRs for a New Call When a new call accesses the network, the BS C traverses all the candidate channels and calculates their CIRs for subsequent channel allocation. The formulas for calculating CIRs for a new call are as follows: l

CIR = Wanted signal level – Interfering signal level

l

Valid signal level = Transmit power – Path loss

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Interfering signal level = Transmit power of the interference source – Path loss

The following uses how to calculate downlink CIR for a new call as an example. Figure 3-3 shows the downlink interference on a new call. Figure 3-3 Downlink interference on a new call

In this example, A is a new call and B is an established call. There is interference between calls A and B, and call B causes downlink interference to call A. The downlink CIR for call A is calculated using the following formula: Then... Downlink CIR for call A = (Transmit power of cell A – Downlink path loss between MS A and its serving cell) – (Transmit power of cell B – Downlink path loss between MS A and cell B) When the network has high requirements for speech quality and the network congestion rate BSC6900 , BSC6910 ) to YES(Yes) and set the soft is not high, set IBCASOFTBLKSWITCH( blocking threshold for a new call. If the CIR for an established call is less than the specified soft blocking threshold, the BSC considers the speech quality on the established call unacceptable. As a result, the BSC does not allocate the channel occupied by the established call to the new call. The soft block thresholds of different services are specified by the following parameters: l

IBCAFRSOFTBLKTHRD( BSC6900 , BSC6910 )

l

IBCAHRSOFTBLKTHRD( BSC6900 , BSC6910 )

l

IBCAAFRSOFTBLKTHRD( BSC6900 , BSC6910 )

l

IBCAAHRSOFTBLKTHRD( BSC6900 , BSC6910 )

l

IBCAWAFRSOFTBLKTHRD( BSC6900 , BSC6910 )

l

VAMOSAHSUserDLSoftBlockThd( BSC6900 , BSC6910 )

l

VAMOSAFSUserDLSoftBlockThd( BSC6900 , BSC6910 )

When the network has no strict requirements for speech quality and the network congestion rate is high, set IBCASOFTBLKSWITCH( BSC6900 , BSC6910 ) to NO(No). After that, the BSC allocates the channel occupied by the established call to the new call even if the CIR for the established call is less than the specified soft blocking threshold.

Calculating the Decrease in CIRs for Established Calls After a new call accesses the network, the BSC traverses all the candidate channels and calculates the decrease in the CIR for each established call for subsequent channel allocation. Issue 02 (2016-08-31)


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The BSC evaluates the decrease in CIRs for established calls. The new call may cause interference to the established calls on the same timeslot. If the interference is strong, the receive quality of the established call decreases, thereby jeopardizing speech quality of the established calls. Calculating the decrease in CIRs for the established calls consists of calculating the CIRs for the established calls l

CIRs for the established calls before a new call accesses the network

l

CIRs for the established calls after a new call accesses the network

The calculation method is similar to that for calculating CIRs for a new call. When the network has high requirements for speech quality and the network congestion rate BSC6900 , BSC6910 ) to YES(Yes) and set the soft is not high, set IBCASOFTBLKSWITCH( blocking threshold for an established call. If the CIR for the established call is less than the specified soft blocking threshold after a new call accesses the network, the BSC considers the speech quality on the established call unacceptable. As a result, the BSC does not allocate the channel occupied by the established call to the new call.

3.4 Determining Whether to Perform a Dynamic Channel Conversion l

TCH-to-PDCH conversion BSC6900 , BSC6910 ) parameter is set to When the IBCAPDDYNTRENHANCE( OFF(Off) , PS services can be carried only on the BC CH TRX. BSC6900 , BSC6910 ) parameter is set to When the IBCAPDDYNTRENHANCE( ON(On) : –

BSC6900 , BSC6910 ) parameter is set to 255 for If the IBCATGTCIRMAIOFIXED( a TRX, dynamic PDCH conversion is not allowed on the TRX.

–

BSC6900 , BSC6910 ) parameter is set to a value If the IBCATGTCIRMAIOFIXED( other than 255 for a TRX, dynamic PDCH conversion is allowed on the TRX and only the MAIO configured for the TRX can be used.

In this scenario, the BSC estimates the interference that the PDCH to be converted from a TCH causes to the established calls. If the CIR for an established call is less than the specified soft blocking threshold, the BSC rejects the conversion request and imposes a penalty status on the TCH to be converted to the PDCH by prohibiting channel conversion within the period specified by the IBCAPDCHDYNTRANTMR( BSC6900 , BSC6910 ) parameter. This prevents frequent conversions on a TCH within a short period. When the IBCAPDCHDYNTRANTMR( BSC6900 , BSC6910 ) parameter is set to 0, the BSC allows dynamic PDCH conversion. In this situation, the BSC does not impose a penalty status on the TCH and the soft blocking function for the dynamic PDCH conversion does not take effect. l

TCH-to-SDCCH conversion During a dynamic TCH-to-SDCCH conversion, the BSC estimates the interference that the SDCCH causes to established calls. If the CIR for an established call is less than the specified soft blocking threshold, the BSC considers the speech quality on the established call unacceptable, and therefore does not allow the TCH-to-SDCCH conversion.

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3.5 Evaluating Channel Priority The BSC calculates the CIR residual (CRES) value to determine the channel priority by considering the CIRs for a new call and the decrease in CIRs for established calls. The smaller the CRES value, the higher the channel priority. Based on the channel priority, the BSC selects the optimal channel for a new call. BSC6900 , BSC6910 ) parameter is set to ON(On), the BSC When the IBCAIIPriOptSwitch( calculates the CRES value based on the receive quality of the new call and the interference the new call causes to the established calls. The IBCAIINewCallFactor( BSC6900 , BSC6910 ) parameter specifies the weight of the CIR for a new call in IBCA priority. In the actual calculation, the BSC identifies the optimal channel based on the sum of the CIR for a new call BSC6900 , BSC6910 ) parameter. and the IBCAIINewCallCIROffset(

The CRES value is calculated based on the CRES value for a new call and the CRES value for an established call. l

During the calculation of the CRES value for a new call, the BSC calculates the minimum uplink and downlink CIRs for the new call based on the estimated uplink CIR BS C6900 , BS C6910 ). The and IBCAIIULDemdOffsetThr( IBCAIIULDemdOffsetThr( BSC6900 , BSC6910 ) parameter specifies the offset between uplink and downlink IBCA demodulation performance.

l

During the calculation of the CRES value for the established call, the BSC determines whether to filter the receive quality in MRs based on the IBCAIIEstFiltBadQualThr( BSC6900 , BSC6910 ) parameter. If the receive quality is greater than or equal to the value of this parameter, the receive quality on the channel is poor, and therefore the filtering is not required. NOTE

BSC6900 , BSC6910 ) parameter is set to OFF(Off), the BSC uses the When the IBCAIIPriOptSwitch( IBCA algorithm to evaluate the channel priority.

BSC6900 , BSC6910 ) parameter is set to ON(On), the BSC When the IntfBandEnhanceSw( changes the CRES value and evaluates the IBCA priority based on the interference level. When the evaluated MAIO is the MAIO configured for the channel and the interference level BSC6900 , BSC6910 ), the BSC of the channel is greater than IBCAINTFPUNISHTHR( lowers the IBCA priority for the channel. This avoids allocation of a new call to a channel with strong interference because of inaccurate evaluation based on IBCA II. The sub interference level is used instead of the interfer ence level when the IBCAIIIntfBndOptSwitch( BSC6900 , BSC6910 ) parameter is set to ON(On).

3.6 Selecting an Optimal Channel Based on the channel priority and the configured channel selection scheme, the BSC allocates the optimal channel to a new call. BSC6900 , BSC6910 ) parameter specifies the method for the BSC The IBCAMAIOUSMTD( to allocate a channel to a new call. l

BSC6900 , BSC6910 ) parameter is set to 0(Max. optimized If the IBCAMAIOUSMTD( MAIO), the BSC allocates a channel with the highest priority to the new call. –

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The IBCACIRESTENHANCE( BSC6900 , BSC6910 ) parameter specifies whether to optimize evaluation during the assignment or handover procedure. When the Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

14



CRES values are the same, the BSC preferentially allocates a channel with a high CIR for the new call. –

The BSC allocates a TCHH to the new call when all the following conditions are BSC6900 , BSC6910 ) parameter is set to ON(On) . met: The IBCAIIHRPriSwitch( The cell load is greater than or equal to AMRHALFTOFULLHOTHRESH( BSC6900 , BSC6910 ) or NOAMRHALFTOFULLTHRESH( BSC6900 , BSC6 910 ). The CIR for a new call corresponding to the optimal MAIO on the channel is greater than or equal to the target CIR for a new call on the TCHH. This function does not take effect for VIP subscribers.

l

BSC6900 , BSC6910 ) parameter is set to 1(Randomization If the IBCAMAIOUSMTD( MAIO), the BSC selects a channel that meets the threshold specified by the IBCATARGETCIRTHRSH( BSC6900 , BSC6910 ) parameter from candidate channels and allocates it to the new call.

l

The IBCA II priority is considered in the quality weight. Therefore, it is recommended that CHALLOCSTRATEGY( BSC6900 , BSC6910 ) be set to QUALITY(Quality preferred) .

The BSC preferentially allocates the call that performs an incoming BSC handover or interRAT handover to a channel on the BCCH TRX. The IBCAFREEBCCHCHANTHRSHOLD( BSC6900 , BSC6910 ) parameter specifies the minimum number of idle TCHs on the BCCH TRX. If the network congestion rate is high, set this parameter to 0. When 1x1 frequency reuse pattern is used and radio frequency (RF) FH is enabled, if IBCAIIMAIOOptSw( BSC6900 , BSC6910 ) is set to ON(On), the BSC allocates different MAIOs to calls on the same timeslot in the cells that serve the same BTS and belong to the same MA group. This allocation prevents deterioration of quality or call drop rate caused by co-channel interference on the BTS.

3.7 Identifying a Call on the Verge of Being Dropped and Preventing Call Drops Identifying a call on the verge of being dropped and preventing call drops takes effect when BSC6900 , BSC6910 ) parameter is set to ULSWITCH(UpLink the IBCAIIUserPCSwitch( Switch), DLSWITCH(Downlink Switch), or ULDLSWITCH(Uplink and Downlink Switch).

3.7.1 Identifying a Call on the Verge of Being Dropped The BSC considers that a call is on the verge of being dropped and searches for interference sources when the receive level and receive quality of the call meet the P/N criterion. Specifically, for P filtered levels, N levels are greater than or equal to Lev_Thr. For P filtered qualities, N qualities are greater than or equal to Qual_Thr. The value P is specified by the IBCAIIUserPCStat( BSC6900 , BSC6910 ) parameter and the value N is specified by the IBCAIIUserPCLast( BSC6900 , BSC6910 ) parameter. The parameters corresponding to Qual_Thr and Lev_Thr are as follows: l l

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BSC6900 , BSC6910 ) Qual_Thr: IBCAIIUserPCJudgQualThr( BSC6900 , BSC6910 ) and Lev_Thr: IBCAIIUserPCJudgULRxlevThr( IBCAIIUserPCJudgDLRxlevThr( BSC6900 , BSC6910 ) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

15



NOTE

The BSC searches for interference sources if the uplink or downlink level is greater than or equal to IBCAIIUserPCJudgULRxlevThr( BSC6900 , BSC6910 ) or IBCAIIUserPCJudgDLRxlevThr( BSC6900 , BSC6910 ).

3.7.2 Identifying Interference Sources Based on the timeslot number and frequency of the call on the verge of being dropped, the BSC searches for uplink and downlink co- and adjacent-channel interference sources, including CS, voice services over adaptive multi-user channels on one slot (VAMOS), downlink PS, and high speed circuit switched data (HSCSD) services. The higher the transmit power, the stronger the interference. For PS interference, the PDCH transmit power equals the maximum transmit power minus IBCAIIPSDLIntfOffset( BSC6900 , BSC6910 ). When the level difference between the primary and secondary interference sources is greater BSC6900 , BSC6910 ), the BSC decreases the than the value of IBCAIIUserPCMainIntfThr( transmit power of the primary interference source. NOTE

The primary interference source refers to an interference source with the highest signal level, and the secondary interference source refers to an interference sourc e with the second highest signal level.

The user-level refined power control function is enabled in a cell if both of the following conditions are met: l

BSC6900 , BSC6910 ) parameter is set to The IBCAIIUserPCSwitch( ULSWITCH(UpLink Switch) or DLSWITCH(Downlink Switch).

l

BSC6900 , BSC6910 ) parameter is set to ON(On). The IBCAIIUserFinePCSwitch(

When this function is enabled, the BSC performs the following operations to process downlink interference sources: 1.

Filters the primary downlink interference sources If the speech quality of a call that serves as the primary downlink interference source is poor, the BSC decreases its transmit power. As a result, call drops occur. In this situation, the BSC filters out the primary downlink interference sources that meet the following formulas, without decreasing the transmit power: –

Speech quality of a CS call or t he worst speech quality for the HSCSD channel group ≥ Rxqual{[MAX(Q_Thr_Lower IBCAIIUserPCDlQaThrOffset( BSC6900 , BSC6910 ) ,1) + MAX(Q_Thr_Upper IBCAIIUserPCDlQaThrOffset( BSC6900 , BSC6910 ), 1)]/2} x 10 where, Rxqual{[MAX(Q_Thr_Lower IBCAIIUserPCDlQaThrOffset( BSC6900 , BSC6910 ) ,1) + MAX(Q_Thr_Upper IBCAIIUserPCDlQaThrOffset( BSC6900 , BSC6910 ), 1)]/2} indicates the receive quality class converted from a specified CIR and is rounded down. Based on the service type of interference sources, Q_Thr_Lower and Q_Thr_Upper are configured using different parameters, as listed in Table 3-1.

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Table 3-1 Parameters for Q_Thr_Lower and Q_Thr_Upper based on the service type of interference sources

Service Type

–

Parameter for Q_Thr_Lower

Parameter for Q_Thr_Upper

Half rate (HR)

DLHSREXQUALLOWT DLHSREXQUALHIGH HRED( BSC6900 , BSC69 THRED( BSC6900 , BSC 10 ) 6910 )

Full rate (FR)

DLFSREXQUALLOWT DLFSREXQUALHIGH HRED( BSC6900 , BSC69 THRED( BSC6900 , BSC 10 ) 6910 )

AMR HR

DLAHSREXQUALLO DLAHSREXQUALHIG WTHRED( BSC6900 , BS HTHRED( BSC6900 , BS C6910 ) C6910 )

AMR FR

DLAFSREXQUALLOW DLAFSREXQUALHIG THRED( BSC6900 , BSC HTHRED( BSC6900 , BS 6910 ) C6910 )

Speech quality of a VAMOS call ≥ Rxqual(CIR( alphaQThr ) – IBCAIIUserPCDlQaThrOffset( BSC6900 , BSC6910 )) where, CIR(alphaQThr ) indicates the CIR converted from a specified receive quality class. Based on the service type, alphaQThr is configured using AlphaQpskHRRxQualThd( BSC6900 , BSC6910 ) or AlphaQpskAmrHRRxQualThd( BSC6900 , BSC6910 ).

2.

Determines the start frame number for power control on the primary interference source , BSC6910 ), the Based on the service type and the value of FRAME OFFSET ( BSC6900 BSC determines the frame number of the primary interference sour ce corresponding to the SACCH for the call on the verge of being dropped. If the frame number does not correspond to a SACCH frame or idle frame, the BSC considers it as the start frame number for power control and sends it to the BTS. The BTS then performs power control on specified frames. In this way, the impact on low quality indicators (LQIs) for the call that serves as the primary interference source is mi nimized.

3.7.3 Decreasing Power of the Interference Sources BSC6900 , BSC6910 ) parameter specifies the value of the timer for The IBCAIIUserPCTimer( reducing power consumption of an interference source. The timer resets when it expires, an interference source is released, or a call that is considered an interference source is handed over to another channel. Different interference sources require different power decrease amounts. l

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If HSCSD, VAMOS, or other CS services are the interference sources, the BSC decreases the receive level and quality thresholds f or the interference sources. The power decrease amounts are specified by the following parameters: –

IBCAIIUserPCUlQaThrOffset( BSC6900 , BSC6910 )

–

IBCAIIUserPCDlQaThrOffset( BSC6900 , BSC6910 )

–

IBCAIIUserPCUlLevThrOffset( BSC6900 , BSC6910 ) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

17

GSM BSS IBCA II Feature Parameter Description – l


IBCAIIUserPCDlLevThrOffset( BSC6900 , BSC6910 )

If PS services are the interference sources, the power control amount is calculated using the following formula: Power control amount = Original PS power control amount + IBCAIIPdchDLPwOffset( BSC6900 , BSC6910 )

If the user-level refined power control function is enabled, after the BTS receives the start frame number for power control from the BSC, the BTS decreases power of the specified frames based on the service type of the primary interference sources. l

PS services: –

If the MCS-1 or CS-1 is used, the BTS does not decrease power of the frames.

–

If the MCS-1 or CS-1 is not used, the power control amount is calculated using the following formula: Power control amount = Original PS power control amount + IBCAIIPdchDLPwOffset( BSC6900 , BSC6910 )

l

VAMOS services: The BTS simultaneously decreases power of the frames for two multiplexed calls on the downlink. The power control amount is calculated using the following formula: Power control amount = Original power control amount + IBCAIIUserPCDlLevThrOffset( BSC6900 , BSC6910 )

l

CS services (including HSCSD services) except VAMOS services: The power control amount is calculated using the following formula: Power control amount = 2 x Original power control amount + IBCAIIUserPCDlLevThrOffset( BSC6900 , BSC6910 )

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4 Related Features

4

Related Features

Prerequisite Features

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Feature ID

Feature Name

Description

GBFD-510401

BTS GPS Synchronization

l

This feature requires either of the features.

GBFD-118620

Clock over IP Support 1588V2

l

IBCA II requires the GBFD-510401 BTS GPS Synchronization feature or the time synchronization function of the GBFD-118620 Clock over IP Support 1588v2 feature.

l

IBCA II can accurately evaluate interference that a new call causes to the established calls on the same timeslot and allocate the optimal channel to the new call only when the Um interface software synchronization is enabled.


19


4 Related Features

Feature ID

Feature Name

Description

GBFD-113701

Frequency Hopping (RF hopping, baseband hopping)

l

l

GBFD-118621

GBFD-117601

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Connection Inter BSC over IP

HUAWEI III Power Control Algorithm

IBCA II can perform evaluation only in frequency hopping (FH) mode. In addition, IBCA II can be enabled in the cells participating in FH and applies only to channel allocation for TRX participating in FH. RF hopping is recommended because baseband hopping is unlikely to meet the requirements for the 1x1 or 1x3 frequency reuse pattern used by IBCA II. To use baseband hopping, the site configurations must be the same, for example, the S4/4/4 site configuration is used, in areas enabled with IBCA II. If the site configurations are different, the 1x1 or 1x3 frequency reuse pattern cannot be used.

l

Inter-BSC IBCA II depends on the GBFD-118621 Connection Inter BSC over IP feature.

l

This is because inter-BSC IBCA II evaluation information interaction can be performed when inter-BSC connections are implemented.

l

After a new call accesses the network over a channel allocated by the IBCA II feature, the BSC calculates the uplink and downlink initial transmit power using the active power control algorithm. This reduces interference and improves KPIs.

l

When the IBCA II feature is used to identify a call on the verge of being dropped and prevent call drops, the GBFD-117601 HUAWEI III Power Control Algorithm needs to be enabled to decrease power of interference sources. The BSC calculates the signal level based on the target uplink and downlink receive levels and target uplink and downlink receive quality as well as their offsets. The offsets are


20


4 Related Features

Feature ID

Feature Name

GBFD-117602

Active Power Control

Description specified by the following parameters: – IBCAINITPCRXLEVULOFF-

SET( BSC6910 , BSC6900 ) – IBCAINITPCRXLEVDLOFF-

SET( BSC6900 , BSC6910 ) – IBCAINITPCRXQUALU-

LOFFSET( BSC6900 , BSC6910 ) – IBCAINITPCRXQUAL-

DLOFFSET( BSC6900 , BSC691 0 )

Mutually Exclusive Features Feature ID

Feature Name

Description

GBFD-117001

Flex MAIO

Both of the preceding features are interference evaluation algorithms for dynamic MAIO allocation. The difference is that the BFD-117001 Flex MAIO feature dynamically allocates an MAIO based on the amount of interference within a BTS, while the IBCA II feature dynamically allocates an MAIO based on the interference strength on an entire network. These features cannot be simultaneously enabled because they use the same bit to control the channel priority.

GBFD-110502

Assignment and Immediate Assignment

l

l

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The IBCA II feature is exclusive with the very early assignment function in the GBFD-110502 Assignment and Immediate Assignment feature. During the very early assignment, there is no measurement information, and therefore evaluation based on IBCA II cannot be performed. As a result, call access fails and a new call may cause an unacceptable effect on established calls. This deteriorates the speech quality of the established calls or causes call drops.


21


4 Related Features

Impacted Features

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Feature ID

Feature Name

Description

GBFD-114801

Discontinuous Transmission (DTX)Downlink

GBFD-114803

Discontinuous Transmission (DTX)Uplink

GBFD-115821

EICC

IBCA II applies to networks where a frequency reuse pattern is used. When IBCA II is used, cyclic FH is used. In this situation, the network interference model changes significantly. Therefore, IBCA II must be jointly used with the anti-interference and interference suppression features.

GBFD-118103

Network Support SAIC

GBFD-119504

PS Power Control

GBFD-119507

Downlink PS DTX


22


4 Related Features

Feature ID

Feature Name

Description

GBFD-113201

Concentric Cell

l

In a concentric cell, the BCCH TRX is configured in the underlaid subcell. Based on MR data, the BSC can accurately evaluate the interference level between the serving cell and the underlaid subcell where the interfering neighboring cell is located. In addition, based on the measurement information in the underlaid subcell, the BSC can estimate the interference level between overlaid subcells to control or prevent interference between underlaid or overlaid subcells based on IBCA II. This improves speech quality and system capacity.

l

When IBCA II is enabled in a concentric cell, set the IBCAUSEDIUOSUBLAY( BSC690 0 , BSC6910 ) parameter to specify whether this feature is enabled for the underlaid or overlaid subcell.

l

The difference between the methods for calculating path losses in concentric cells and common cells based on IBCA II is as follows:

l

–

When the BCCH TRX is configured in the underlaid subcell, the path loss equals the original path loss plus the value of IBCAIUOPATHLOSSOFF( BSC6900 , BSC6910 ).

–

When the BCCH TRX is configured in the overlaid subcell, the path loss equals the original path loss minus the value of IBCAIUOPATHLOSSOFF( BSC6900 , BSC6910 ).

In a concentric cell, interference evaluation based on IBCA II complies with the following principles: –

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If the IBCA II feature is enabled in both the overlaid and underlaid subcells, the BSC simultaneously evaluates the

23


Feature ID

4 Related Features

Feature Name

Description MAIOs for the overlaid and underlaid subcells.

l

GBFD-114151

DTM

GBFD-119403

Class11 DTM

l

l

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–

If the IBCA II feature is enabled only in the overlaid subcell, the BSC evaluates the MAIO for the overlaid subcell.

–

If the IBCA II feature is enabled only in the underlaid subcell, the BSC evaluates the MAIO for the underlaid subcell.

In a concentric cell, channel priority evaluation based on IBCA II complies with the following principles: –

If the IBCA II feature is enabled in both the overlaid and underlaid subcells, the BSC simultaneously evaluates the channel priority for the overlaid and underlaid subcells.

–

If the IBCA II feature is enabled only in the overlaid subcell, the BSC evaluates the channel priority for the overlaid subcell.

–

If the IBCA II feature is enabled only in the underlaid subcell, the BSC evaluates the channel priority for the underlaid subcell.

–

When the IBCA II feature is not enabled in the overlaid or underlaid subcell, the BSC uses the configured MAIO to evaluate the channel priority. When the IBCA II feature is enabled in both the overlaid and underlaid subcells, the BSC uses the optimal MAIO to evaluate the channel priority.

When IBCA II is enabled, DTM can be enabled on all TRXs only if DTMOptiSwitch( BSC6900 , BSC691 0 ) and IBCAPDDYNTRENHANCE( BSC6 900 , BSC6910 ) are both set to ON(On). When Huawei standard traffic model is used, the MCP board


24


4 Related Features

Feature ID

Feature Name

GBFD-119404

HMC DTM

Description supports a maximum of 30% DTM requests. Specifically, the following condition must be met: (A9816: Number of Downlink DTM TBF Establishment Attempts + A9813: Number of Uplink DTM TBF Establishment Attempts)/K3010A: TCH Seizure Requests (Traffic Channel) ≤ 30% l

GBFD-110802

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Pre-processing of Measurement Report

When DTM is enabled, observe the load on the MCP board. It is recommended that the average load proportion of the MCP board is less than 80%. If the proportion is greater than or equal to 80%, you are advised to add MCP boards or disable IBCA II in some cells.

If BTS preprocessing is enabled for this feature, MRs are processed on the BTS side. The processing results may slightly differ from the results processed on the BSC side, and the evaluation result of the IBCA II feature may also be affected.


25


5 Network Impact

5

Network Impact

5.1 System Capacity Based on a synchronous network, IBCA II uses the following functions to increase network capacity without jeopardizing network speech quality: l

Evaluates interference in real time.

l

Allocates a new call to a channel with less interference.

l

Decreases the transmit power of interference sources for established calls in a timely manner.

l

Minimizes network interference.

Table 5-1 lists the capacity increase percents brought by IBCA II when KPIs related to speech quality, TCH call drop rate, and handover success rate do not deteriorate. Table 5-1 Capacity increase percents (without jeopardizing speech quality) Networking Scenario

Single-band network or coBCCH network

Low-band continuous coverage area in a dual-band network

Frequency Reuse Pattern

1×1, 1×3, or FR load > 75%

FR load ≥ 50%

1×1, 1×3, or FR load > 50%

Capacity Increase Percent

10 to 20 percents

8 to 12 percents

5 to 10 percents

5.2 Network Performance The following IBCA II functions have an impact on network performance: l

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Evaluates the interference between TCHs and the interference that a PDCH or SDCCH causes to a TCH. Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

26


5 Network Impact

Implements dynamic frequency sharing between CS and PS services based on the userlevel evaluation.

These functions effectively control or prevent interference, thereby improving quality-related KPIs, such as the high quality indicator (HQI) and MOS. In addition, IBCA II enables the BSC to reduce power consumption on the interference sources for a call on the verge of being dropped. This prevents call drops and ensures that the call drop rate does not increase. Therefore, enabling IBCA II for networks of the same capacity improves speech quality and CS KPIs although PS KPIs slightly deteriorate. In addition, enabling IBCA II does not adversely affect the CS call drop rate or handover success rate. The impact of IBCA II on core areas shown in Figure 6-1 is described as follows: l

If IBCA is not enabled on the live network, enabling IBCA II has the following impacts on the network: Table 5-2 Impact of IBCA II on networks of the same capacity

l

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Networkin g Scenario

Single-band network or coBCCH network

Low-band continuous coverage area in a dual-band network

Frequency Reuse Pattern

1×1, 1×3, or FR load > 75%

FR load ≥ 50%

1×1, 1×3, or FR load > 50%

Call Drop Rate Decrease By

5 to 20 percents

Basically unchanged

Basically unchanged

Receive Quality Increase By

20 to 30 percents

6 to 25 percents

10 to 20 percents

MOS Increase By

0.03 to 0.2 points

0.02 to 0.1 points

0.02 to 0.1 points

–

PS KPIs slightly deteriorate.

–

For BSC6900, the load of an XPUa or XPUb board increases. For BSC6910, the load of an EGPUa/EGPUb/EXPUa/EXPUb board increases.

If IBCA is enabled on the live network, only single-band network is supported. In this situation, enabling IBCA II has the following impacts: –

The CS call drop rate decreases by 10 to 20 percents.

–

The LQI (RxQual 6 and 7) decreases by 10 t o 20 percents and the MOS slightly decreases when the BSC decreases the power of the interference sources for a call on the verge of being dropped.


27


6 Engineering Guidelines

6

Engineering Guidelines

6.1 When to Use IBCA II Table 6-1 lists the IBCA II deployment scenario requirements. If these requirements cannot be met, the gains brought by the IBCA II decrease or network performance deteriorates. Table 6-1 Deployment scenario requirements

Scenario Requirement

Detailed Description

Network synchronizatio n

IBCA II is based on time synchronization over the Um interface. To support time synchronization over the Um interface, enable either of the following features: Enable the GBFD-510401 BTS GPS Synchronization feature by adding the GPS hardware to the BTS. Enable the GBFD-118620 Clock over IP Support 1588v2 feature by adding IP clock servers.

Network topology

Single-band networks or co-BCCH cells are supported. If dual-band networks are deployed, IBCA II can be enabled only for low-band cells in low-band continuous coverage areas. After dual-band cells are reconfigured as co-BCCH cells, IBCA II can be enabled in these cells. IBCA II can be enabled in macro cells and is mutually exclusive with the RRU multi-site cells. It is recommended that IBCA II not be enabled in high-speed railway scenarios.

Site configuration

The proportion of mixed deployment of multi-sector sites must be less than 5%. Sites with more than three sectors, such as four sectors and six sectors, affects IBCA II performance gains. If the mixed deployment proportion increases, network performance will deteriorate. The site configuration mode must be S2/2/2 or higher. It is recommended that the site configuration mode be S3/3/3 or higher. This is because IBCA II does not support interference evaluation on the BCCH TRX. If the number of TCH TRXs decreases, IBCA performance gains will deteriorate.

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Scenario Requirement

Detailed Description

Frequency reuse pattern

The frequency reuse pattern must be 4x3 or higher. The planned TCH frequency reuse pattern must be 1x1 or 1x3. Alternatively, the FR load is greater than or equal to 50%. The FR load is calculated using the following formula: FR load = (Average number of TRXs on a BTS)/(Number of TCH frequencies) x 100% NOTE l

l

To calculate the FR load, obtain the frequency planning principles and calculate the number of available frequencies. Typically, the BCCH uses a loose frequency reuse pattern, whereas TCHs use a tight frequency reuse pattern. Therefore, the BCCH frequencies are not included in the number of available frequencies. The number of TRXs in a cell is obtained based on network engineering parameters. IBCA II supports only the 1x1 or 1x3 tight frequency reuse pattern. In normal cases, check whether planned frequencies meet the requirements of the frequency reuse pattern during deployment preparation. If planned frequencies cannot meet the requirements, change the network frequency reuse pattern to 1x1 or 1x3 and set Hop Mode to RF_FH(RF FH).

Area coverage

Continuous coverage areas covered by 25 sites are supported. In addition, independent coverage areas covered by more than 15 sites are allowed.

PS service proportion

The FH layer carries PS services, and therefore affects CS gains. In this situation, PS and CS performance may deteriorate. The number of PDCHs is less than or equal to 5 or the equivalent PS traffic volume is less than 30%.

Level coverage

IBCA II applies to urban areas where interference exists and whose proportion of the receive level higher than –90 dBm is greater than 90%. Uplink or downlink weak coverage causes KPIs to deteriorate.

Prohibition of frequent outof-service of sites and their cells

Out-of-service triggers traffic migration, and t herefore causes counter fluctuation, interference model change, weak coverage, performance gain deterioration, and even KPI deterioration. The cell out-of-service proportion must be less than 10% and the average daily out-of-service period must be less than 1 hour.

Cell TRX configuration

The proportion of large-configuration cells must be less than 5%. This is because a large cell TRX distribution difference causes complex planning and generates many interference sources. When this happens, interference prevention is difficult and performance gains are affected. Cells have large configurations if the following condition is met: Number of cell TCH TRXs ≥ 2 x Average number of TRXs in a cell

Hardware module

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3012 series base stations or BTSs configured with DRRU or DRFU modules do not support IBCA II.


29



6.2 Required Information Before enabling the IBCA II feature, collect the information for parameter planning and data accuracy check. Table 6-2 lists information to be collected in cells where IBCA II is to be deployed. Table 6-2 Information to be collected

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No.

Required Information

Objective

1

Alarms generated in the latest month for a BTS enabled with the IBCA II feature

Stability analysis for the areas

2

Engineering parameters for the BTS enabled with the IBCA II feature, such as cell name, longitude and latitude, azimuth, site configuration, and MA

Network topology analysis and parameter planning for the synchronous network

3

Latest BSC configuration file for the areas enabled with the IBCA II feature

Engineering parameter accuracy check

4

Original traffic statistics and historical data covering one week (7 x 24 hours) for the BTS enabled with the IBCA II feature

Comparison between traffic statistics and between network operating status before and after the IBCA II feature is enabled

5

Traffic statistics and historical data related to Comparison between traffic the TRX-level receive quality class covering statistics related to the TRXone week for the BTS enabled with the IBCA II level receive quality class feature before and after the IBCA II feature is enabled

6

Traffic statistics related to the interference matrix of the original network covering one week (7 x 24 hours) for the BTS enabled with the IBCA II feature

IBCA interfering cell planning

7

Traffic statistics related to the total PS power control amount and total number of data blocks covering one week (7 x 24 hours) for the areas enabled with the IBCA II feature

Configuration of IBCAIIPSDLIntfOffset( BSC6900 , BSC6910 )


30


No.

Required Information


Objective

Obtain engineering parameters and check their accuracy by performing the following operations: compare the cell engineering parameters with the latest configuration file. Check whether the cell engineering parameters are complete. If these parameters are incomplete, add the required engineering parameters to the engineering table. Correct any incorrect parameters. If time permits, visit the BTS at the site to check the longitude and latitude of the BTS and the cell azimuth. If a GPS system has been configured and works correctly, obtain the longitude and latitude information from the GPS. Obtain the interference matrix in the areas where the IBCA II feature is enabled. This provides a basis for subsequent planning of IBCA II interfering neighboring cells. When this feature is enabled, analyze and configure the IBCA II interfering neighboring cells based on the actual interference data on the live network. The actual interference data can be obtained based on the interference matrix analysis on the Nastar.

6.3 Network Planning IBCA II planning includes planning areas, frequencies, hopping sequence numbers (HSNs), MAIOs, and IBCA II interfering neighboring cells. l

Area planning IBCA II is based on a synchronous network. If a synchronous network uses IBCA II and its surrounding areas are served by an asynchronous network, a limited number of interfering neighboring cells can be configured for IBCA II border cells. This decreases the accuracy of evaluation based on IBCA II. Compared with the gains in the IBCA II core areas, the gains in IBCA II border areas are small. In addition, ensure that IBCA II is enabled in a continuous coverage area that accommodates at least 30 sites. Figure 6-1 shows the area planning. Figure 6-1 Area planning

–

IBCA II core or border area The area is served by a synchronous network and is enabled with IBCA II. The value of HSN is 0.

–

Issue 02 (2016-08-31)

Asynchronous network area Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

31



The area is not enabled with IBCA II. l

Frequency planning Frequencies are planned for TCHs. When IBCA II is enabled, TCHs use the 1x3 or 1x1 frequency reuse pattern. –

l

If 12 or less frequencies participate in FH on a TCH, use the 1x1 frequency reuse pattern to maximize the FH gains.

–

If more than 12 frequencies participate in FH on a TCH, use the 1x3 frequency reuse pattern.

–

If frequencies in the 1x3 frequency reuse pattern on the original network are grouped in sequential order, group frequencies in the 1x3 frequency reuse pattern in non-sequential order. This prevents adjacent-channel interference in a cell.

HSN planning Cells served by a BTS must use the same HSN. When IBCA II is enabled, FH mode is determined based on the HSN planning. –

If the HSN is set to 0, cyclic FH is used.

–

If HSN is set to a value other than 0, random FH is used. For a BTS enabled with IBCA II, the recommended value of HSN is 0. Set the HSN to a value other than 0 for the following BTSs:

l

–

BTSs that encounter frequent shutdown, which affects the IBCA II performance.

–

BTSs that cannot synchronize with each other even if the synchronization f eature is enabled

–

BTSs whose counters related to handover or call drop significantly deteriorate after IBCA II is enabled

MAIO planning MAIO planning consists of planning the TRXMAIO( BSC6900 , BSC6910 ) parameter and the parameters MAIO1 to MAIO24. The TRXMAIO( BSC6900 , BSC6910 ) parameter specifies an MAIO of a channel on the TRX participating in FH in a cell or subcell. Obtain a set of MAIOs that can be used by the IBCA II algorithm in each cell from a set of available MAIOs, and then assign an MAIO for the TRXMAIO( BSC6900 , BSC6910 ) parameter.

l

IBCA II interfering neighboring cell planning During IBCA II network planning, IBCA II interfering neighboring cells must be configured for each serving cell. When a new call accesses its serving cell, the BSC collects information about IBCA II interfering neighboring cells to evaluate the interference, and therefore allocates an appropriate channel to the new call. To ensure that the BSC allocates appropriate channels, select the neighboring cells that cause strong interference to the serving cell as the IBCA II interfering neighboring cells. A maximum of 24 IBCA II interfering neighboring cells can be configured. The larger the number of IBCA II interfering neighboring cells, the more accurate the interference evaluation, and the better the network performance.

6.4 Deploying IBCA II

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32



6.4.1 Deployment Requirements Table 6-3 Deployment requirements

Aspect

Requirement

Related features

See 4 Related Features.

BSC

l

l

Issue 02 (2016-08-31)

Before enabling this feature, ensure that the following requirements are met to prevent flow control due to a high CPU usage: –

For the BSC6900, XPUa/XPUb boards work in active/standby mode. If the board load exceeds 60%, add a pair of XPUa/XPUb boards.

–

For the BSC6910, EGPUa/EGPUb/EXPUa/EXPUb boards work in resource pool mode. If the board usage exceeds 60%, add an EGPUa/ EGPUb/EXPUa/EXPUb board.

IP interface boards have been configured if inter-BSC IBCA II needs to be enabled.

BTS

See 6.1 When to Use IBCA II.

GSM networki ng

l

A built-in PCU has been configured.

l

BSC6900: A pair of active and standby XPUa or XPUb boards has been configured. The LGCAPPTYPE( BSC6900 , BSC6910 ) parameter for these boards is set to MCP.

l

BSC6910: A pair of active and standby EGPUa/EGPUb/EXPUa/EXPUb BSC6900 , BSC6910 ) boards has been configured. The LGCAPPTYPE( parameter for these boards is set to GMCP.

l

900 or 1800 MHz single-band network, co-BCCH network, or low-band continuous coverage areas in the dual-band network

MS

None

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 transmission and power supply are stable. This requirement must be met because the IBCA II is based on a synchronous network. Power outages or intermittent disconnections may cause call drops due to out-of-synchronization states.


33



6.4.2 Data Preparation Table 6-4 Data preparation

Parameter Name

Parameter ID

Setting Notes

Data Source

IBCAINBSCINFO RPTPRD( BSC6900 , BSC6910 )

The recommended value is 200.

Engineering design

IBCAALLOWED( B SC6900 , BSC6910 )

The recommended value is YES(Yes).

Internal plan

IBCA Soft Block Switch

IBCASOFTBLKSW The recommended ITCH( BSC6900 , BS value is YES(Yes). C6910 )

Internal plan

IBCA FR/EFR Soft Block Threshold

IBCAFRSOFTBLK THRD( BSC6900 , B SC6910 )


Internal plan

IBCA Info Report Period Within BSC

IBCA Allowed

IBCA HR Soft Block Threshold

Issue 02 (2016-08-31)

If this parameter is set to a value greater than 200, IBCA II evaluation information interaction is delayed, which adversely affects channel allocation.

If the congestion rate is high and the TCHBUSYTHRES parameter is set to a value greater than 90, decrease the threshold specified by this parameter at a step of 1 or 2 dB.

IBCAHRSOFTBLK The recommended THRD( BSC6900 , B value is 6. SC6910 ) If the congestion rate is high and the TCHBUSYTHRES parameter is set to a value greater than 90, decrease the threshold specified by this parameter at a step of 1 or 2 dB.


Internal plan

34


Parameter Name IBCA AMR FR Soft Block Threshold

Issue 02 (2016-08-31)


Parameter ID IBCAAFRSOFTBL KTHRD( BSC6900 , BSC6910 )

IBCA AMR HR Soft Block Threshold

IBCAAHRSOFTBL KTHRD( BSC6900 , BSC6910 )

IBCA WAMR FR Soft Block Threshold

IBCAWAFRSOFTB LKTHRD( BSC6900 , BSC6910 )

IBCA Soft Block SAIC Offset

IBCASOFTBLKSA ICOFF( BSC6900 , B SC6910 )

Setting Notes

Data Source


Internal plan

If the congestion rate is high and the TCHBUSYTHRES parameter is set to a value greater than 90, decrease the threshold specified by this parameter at a step of 1 or 2 dB. The recommended value is 4.

Internal plan


Internal plan



Internal plan

35



Parameter Name

Parameter ID

Data Source

IBCA Interference Band Penalty Threshold

IBCAIntfPunishTH When the R( BSC6900 , BSC69 IBCATGTCIRMAI 10 ) OFIXED( BSC6900 , BSC6910 ) parameter is set to 255 for all TRXs in a cell, set the IBCAINTFPUNIS HTHR( BSC6900 , B SC6910 ) parameter to the maximum value 63.

Internal plan

IBCA Init. Power Control RexLevDL Offset

IBCAINITPCRXLE The recommended VDLOFFSET( BSC value is 3. 6900 , BSC6910 ) The larger the value of this parameter, the higher the initial downlink transmit power.

Internal plan

IBCA Init. Power Control RexLevUL Offset

IBCAINITPCRXLE The recommended VULOFFSET( BSC value is 3. 6900 , BSC6910 ) The larger the value of this parameter, the higher the initial uplink transmit power.

Internal plan

IBCA Init. Pwr Ctrl Rx Qual DL Offset

IBCAINITPCRXQ UALDLOFFSET( B SC6900 , BSC6910 )

IBCA Init. Pwr Ctrl Rx Qual UL Offset

IBCA Inter-BSC Message Send Control Switch IBCA II Switch

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Setting Notes

IBCAINITPCRXQ UALULOFFSET( B SC6900 , BSC6910 )


Internal plan

The larger the value of this parameter, the higher the initial downlink transmit power. The recommended value is 6.

Internal plan

The larger the value of this parameter, the higher the initial uplink transmit power.

IBCAOutBSCMsgS ndCtrlSw( BSC6900 , BSC6910 )

The recommended value is ON(On) .

Internal plan

IBCAIIAllowed( BS C6900 , BSC6910 )

The recommended value is YES(Yes).

Internal plan


36


Parameter Name

Issue 02 (2016-08-31)


Parameter ID

Setting Notes

Data Source

IBCA II User PC Switch

IBCAIIUserPCSwit ch( BSC6900 , BSC69 10 )

The recommended value is DLSWITCH(Down link Switch).

Internal plan

Quality Threshold for IBCA II User PC

IBCAIIUserPCJud gQualThr( BSC6900 , BSC6910 )


Internal plan

UL Level Threshold for IBCA II User PC

IBCAIIUserPCJud gULRxlevThr( BSC 6900 , BSC6910 )


Internal plan

DL Level Threshold for IBCA II User PC

IBCAIIUserPCJud gDLRxlevThr( BSC 6900 , BSC6910 )


Internal plan

IBCA II User PC Power Reduction Timer

IBCAIIUserPCTimer( BSC6900 , BSC69 10 )


Internal plan

IBCAIIUserPCUlQ UL Quality BSC690 Threshold Offset for aThrOffset( IBCA II User PC 0 , BSC6910 )


Internal plan

IBCAIIUserPCDlQ DL Quality BSC690 Threshold Offset for aThrOffset( 0 , BSC6910 ) IBCA II User PC


Internal plan

UL Level Threshold Offset for IBCA II User PC

IBCAIIUserPCUlL evThrOffset( BSC69 00 , BSC6910 )


Internal plan

DL Level Threshold Offset for IBCA II User PC

IBCAIIUserPCDlL evThrOffset( BSC69 00 , BSC6910 )


Internal plan

IBCA II PDCH DL Power Ctrl Step Offset

IBCAIIPdchDLPw Offset( BSC6900 , BS C6910 )


Internal plan

IBCA II Channel Priority Optimize Switch

IBCAIIPriOptSwitc h( BSC6900 , BSC691 0 )


If this parameter is set to a large value, the downlink PS TBF drop rate may increase and the downlink throughput may decrease.


Internal plan

37


Parameter Name


Parameter ID

Setting Notes

Data Source

IBCA II Interfere Assess New Call Weight Factor

IBCAIINewCallFac tor( BSC6900 , BSC6 910 )


Internal plan

IBCA II Interfere Assess New Call Offset Thres.

IBCAIINewCallCI ROffset( BSC6900 , B SC6910 )


Internal plan

IBCA II HR Channel Allocation Optimize Switch

IBCAIIHRPriSwitc h( BSC6900 , BSC691 0 )


Internal plan

MR Filter BQ Threshold for IBCA II Est. Call

IBCAIIEstFiltBadQualThr( BSC6900 , BSC6910 )


Internal plan

IBCA II UL Demodulation Offset Threshold

IBCAIIULDemdOff The recommended setThr( BSC6900 , BS value is 63. C6910 )

Internal plan

IBCA II Interference IBCAIIIntfBndOpt Switch( BSC6900 , B Band Optimize SC6910 ) Switch Channel Allocate Strategy


CHALLOCSTRAT Recommended EGY( BSC6900 , BSC value: QUALITY(Quality 6910 ) preferred)

Internal plan

Internal plan

6.4.3 Activation Using MML Commands Step 1 Run the MOD GCELLMAGRP command with HSN set to an appropriate value. Step 2 (Optional) Configure the information about an external BSC (Optional) Configure the information about an external BSC when inter-BSC IBCA II is enabled. 1.

Run the ADD EXTBSC command to add an external BSC based on network plan.

2.

Run the ADD GEXT2GCELL command to add an external cell based on network plan. In this step, set BSC Index to the index of the external BSC.

Step 3 Run the SET GCELLCHMGAD and SET GCELLIBCAII commands with IBCA II parameters set by referring to Table 6-4.

Step 4 Run the SET GCELLCHMGBASIC command with Channel Allocate Strategy set to QUALITY(Quality Preferred).

Step 5 Run the SET GCELLMAIOPLAN command to configure cell MAIOs based on the network plan. Issue 02 (2016-08-31)


38



Step 6 Run the SET GTRXCHANHOP command with Channel MAIO set to an appropriate value based on network plan. Channel MAIO specifies an MAIO configured for a channel on a TRX. Eight channels on each TRX have the same MAIO. NOTE

The MAIOs configured for TRXs in a cell are part of the MAIOs planned for the cell. For example, two TRXs are configured for a cell but three MAIOs are planned for the cell. The first two MAIOs are configured for the two TRXs.

Step 7 Configure an IBCA II interfering neighboring cell. l

If Neighboring Cell Type is set to HANDOVERNCELL(Handover Neighboring Cell) for a source cell and its neighboring cell on the original network, run the MOD G2GNCELL command with Neighboring Cell Type set to HANDOVERANDIBCANCELL(Handover and IBCA Neighboring Cell) and IBCA RxLev Offset set to 10.

l

If the source cell on the original network has no neighboring cells, run the ADD G2GNCELL command to add a neighboring cell t o the source cell. In this step, set Neighboring Cell Type to IBCANCELL(IBCA Neighboring Cell) and IBCA RxLev Offset to 10.

Step 8 Configure BSC software parameters. Run the SET OTHSOFTPARA command with IBCA Info Report Period Within BSC set to 200 and Dyn Measurement on a Non-IBCA Neighbor set to NO(NO). ----End

MML Command Examples MOD GCELLMAGRP: IDTYPE=BYID, CELLID=0, HOPINDEX=0, HSN=0, TSC=4; SET GCELLCHMGBASIC: IDTYPE=BYID, CELLID=0, CHALLOCSTRATEGY= QUALITY; SET GCELLIBCAII: IDTYPE=BYID, CELLID=0, IBCAIIAllowed=ON, IBCAIIUserPCSwitch=DLSWITCH, IBCAIIPdchDlPwOffset=0; SET GCELLMAIOPLAN: IDTYPE=BYID, CELLID=0, HOPINDEX=0, MAIO1=0, MAIO2=3, MAIO3=6; SET GTRXCHANHOP: TRXID=1, CHNO=0, TRXMAIO=0; SET GTRXCHANHOP: TRXID=1, CHNO=1, TRXMAIO=0; ...... SET GTRXCHANHOP: TRXID=1, CHNO=7, TRXMAIO=0; MOD G2GNCELL: IDTYPE=BYID, SRC2GNCELLID=0, NBR2GNCELLID=1, NCELLTYPE=HANDOVERANDIBCANCELL, IBCARXLEVOFFSET=10; ADD G2GNCELL: IDTYPE=BYID, SRC2GNCELLID=0, NBR2GNCELLID=1, NCELLTYPE=IBCANCELL, IBCARXLEVOFFSET=10; SET OTHSOFTPARA: IBCAINBSCINFORPTPRD=200, NONIBCADYNMEAEN=NO; SET GCELLCHMGAD: IDTYPE=BYID, CELLID=0, IBCAALLOWED=YES; Issue 02 (2016-08-31)


39



Using the CME (Method 1) Step 1 Set HSN. Step

Configurable in CME Batch Modification Center

BTS Topology Topology > Right click cell > Configure MA Group, set HSN to an appropriate value ).

No

Step 2 Set other parameters. NOTE

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.

Config Configure ure a sing single le objec objectt on the CME. CME. (CME (CME sing single le confi configur gurati ation) on) Set parameters on the CME according to the operation sequence in Table 6-5 6 -5. For instructions on how to perform the CME single configuration, see CME Single Configuration Operation Guide.

2.

(Optional) (Optional) Modify Modify objects objects in batches batches on the the CME. CME. (CME (CME batch batch modific modification ation center) center) To modify objects in batches, click the icon to start the batch modification wizard. For instructions on how to perform a batch modification through the CME batch modification center, press F1 on the wizard interface to obtain online help.

----End Table 6-5 6 -5 Configuring parameters on the CME

SN

Managed Object (MO)

NE

Paramete r Name

Parameter Parameter ID

1(Optional)

EXTBSC

BSC6900/ BSC6910

BSC BSC Index

BSCIDX

BSC6900/ BSC6910

External BSC Name

BSCNAME

BSC6900/ BSC6910

External BSC DPC

BSCDPC

NOTE Configure the information about an external BSC when inter-BSC IBCA II is enabled.

Issue 02 (2016-08-31)


Configur Configura a ble in CME Batch Modificati on Center

40


SN


Managed Object (MO)

NE

Paramete r Name



GEXT2GC ELL

BSC6900/ BSC6910

BSC Index

BSCIDX

Yes

GCELLCH MGAD

BSC6900/ BSC6910

NOTE

NOTE

Yes

GCELLIB CAII

BSC6900/ BSC6910

GCELLMA IOPLAN

BSC6900/ BSC6910

MAIO 1

MAIO1

BSC6900/ BSC6910

...

...

BSC6900/ BSC6910

MAIO 24

MAIO24

BSC6900/ BSC6910

Channel Allocate Strategy

CHALLOCST RATEGY

NOTE Add an external cell based on network plan. In this step, set BSC Index to the index of the external BSC.

2

3

NOTE Set MAIOs based on network plan.

4

Issue 02 (2016-08-31)

GCELLCH MGBASIC

Set IBCA II parameter s by referring to Table 6-4.


Set IBCA II parameters by referring to Table 6-4.

Yes

Yes

41


SN

5


Managed Object (MO)

NE

Paramete r Name



GTRXCHA NHOP

BSC6900/ BSC6910

Channel MAIO

TRXMAIO

No

NOTE

NOTE

The MAIOs configured for TRXs in a cell are part of the MAIOs planned for for the cell. For example, two TRXs are configured for a cell but three MAIOs are planned for for the cell. The first two MAIOs are configured for the two TRXs.

6

7

Issue 02 (2016-08-31)

G2GNCEL L

OTHSOFT PARA

Channel MAIO specifies an MAIO configure d for a channel on a TRX. Eight channels on each TRX have the same MAIO.

BSC6900/ BSC6910

Neighbori NCELLTYPE NCELLTYPE ng Cell Type

BSC6900/ BSC6910

IBCA RxLev Offset

IBCARXLEV OFFSET

BSC6900/ BSC6910

IBCA Info Report Period Within BSC

IBCAINBSCI NFORPTPRD

BSC6900/ BSC6910

Dyn Measure ment on a NonIBCA Neighbor

NONIBCADY NMEAEN


No

Yes

42



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. NOTE

Inter-BSC IBCA II cannot be activated in batches using the CME.

6.4.4 Activation Observation l

Viewing the counters Obtain the measurement result of the Number of IBCA TRX Allocations During TCH Request counter. If the value of this counter is not 0, IBCA II takes effect.

l

Querying the traced messages a.

Trace the radio signaling link (RSL) messages over the Abis interface in a cell enabled with IBCA II.

b.

Select the RSL messages over the same timeslot of the same TRX board at different time points, as shown in Figure 6-2. Figure 6-2 RSL messages traced on the Abis interface

c.

Compare MAIOs allocated to channels at different time points. Expected result: The MAIOs are different, indicating that the IBCA II algorithm takes effect, as shown in Figure 6-3 and Figure 6-4. Figure 6-3 MAIO IE (1)

Issue 02 (2016-08-31)


43



Figure 6-4 MAIO IE (2)

6.4.5 Deactivation Using MML Commands l

Scenario 1: Only IBCA II is enabled.

1.

Remove the IBCA II interfering neighboring cell. –

If Neighboring Cell Type is set to HANDOVERANDIBCANCELL(Handover and IBCA Neighboring Cell for a source cell and its neighboring cell on the original network, run the MOD G2GNCELL command with Neighboring Cell Type set to HANDOVERNCELL(Handover Neighboring Cell).

–

If the source cell has no handover neighbor relationship on the original network, run the RMV G2GNCELL command to remove the IBCA II interfering neighboring cell.

NOTICE Changing the value of IBCA Allowed from YES(Yes) to NO(No) will reset the cell. Therefore, perform this operation during off-peak hours. 2.

Run the SET GCELLCHMGAD command with IBCA Allowed set to NO(No).

3.

Run the SET GCELLIBCAII command with IBCA II Switch set to OFF(Off) .

NOTICE Changing the HSN will reset the cell. Therefore, perform this operation during off-peak hours. 4.

Run the MOD GCELLMAGRP command to restore the HSN to the value before IBCA II is enabled.

5.

Run the SET GCELLCHMGBASIC command with Channel Allocate Strategy set to the value used before IBCA II is deployed.

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Scenario 2: Both IBCA and IBCA II are enabled. Run the SET GCELLIBCAII command with IBCA II Switch set to OFF(Off) .

MML Command Examples //Deactivating IBCA II l

Scenario 1: MOD G2GNCELL: IDTYPE=BYID, SRC2GNCELLID=0, NBR2GNCELLID=1, NCELLTYPE= HANDOVERNCELL; RMV G2GNCELL: IDTYPE=BYID, SRC2GNCELLID=0, NBR2GNCELLID=1; SET GCELLCHMGAD: IDTYPE=BYID, CELLID=0, IBCAALLOWED=NO; SET GCELLIBCAII: IDTYPE=BYID, CELLID=0, IBCAIIAllowed=OFF; MOD GCELLMAGRP: IDTYPE=BYID, CELLID=0, HOPINDEX=0, HSN=12; SET GCELLCHMGBASIC: IDTYPE=BYID, CELLID=0, CHALLOCSTRATEGY= CAPABILITY;

l

Scenario 2: SET GCELLIBCAII: IDTYPE=BYID, CELLID=0, IBCAIIAllowed=OFF;

Using the CME NOTE

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.

Step 1 Configure a single object on the CME. (CME single configuration) Set parameters on the CME according to the operation sequence in Table 6-6 and Table 6-7. For instructions on how to perform the CME single configuration, see CME Single Configuration Operation Guide .

Step 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 to start the batch modification wizard. For instructions on how to perform a batch modification through the CME batch modification center, press F1 on the wizard interface to obtain online help. l

Scenario 1: Only IBCA II is enabled. 1. Deactivating IBCA II.

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45



Table 6-6 Configuring parameters on the CME

SN

MO

NE

Parameter Name

Parameter ID

Configura ble in CME Batch Modificati on Center

1

G2GNCEL L

BSC6900/ BSC6910

Neighborin g Cell Type

NCELLTY PE

NO

2

GCELLC HMGAD

BSC6900/ BSC6910

IBCA Allowed

IBCAALL OWED

Yes

3

GCELLIB CAII

BSC6900/ BSC6910

IBCA II Switch

IBCAIIAllo wed

Yes

4

GCELLC HMGBASI C

BSC6900/ BSC6910

Channel Allocate Strategy

CHALLOC STRATEG Y

Yes

2. Restore the HSN to the value before IBCA II is enabled.

Step

Configurable in CME Batch Modification Center

BTS Topology > Right click cell > Configure MA Group, restore the HSN to the value before IBCA II is enabled.

No

l

Scenario 2: Both IBCA and IBCA II are enabled. Table 6-7 Configuring the parameter on the CME

SN

1

MO

NE

Parameter Name

Parameter ID

Configura ble in CME Batch Modificati on Center

GCELLIB CAII

BSC6900/ BSC6910

IBCA II Switch

IBCAIIAllo wed

Yes

----End

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46



6.5 Performance Monitoring l

Scenario 1: Only IBCA II is enabled. In this scenario, monitor the counters listed in Table 6-8. Table 6-8 Counters to be monitored

Counter Description

Counter Name

Expected Change After IBCA II Is Enabled

ZTR304: Call Drop Rate on TCH per cell(including Handover)

CELL.RATE.TCH.CALL. DROP.INCLUDE.HO

Remains unchanged or decreases. For details, see 5.2 Network Performance.

ZTR304A: Call Drop Rate on TCH per cell(Excluding Handover)

CELL.RATE.TCH.CALL. DROP.EXCLUDE.HO

Remains unchanged or decreases. For details, see 5.2 Network Performance.

RH303A: Success Rate of Radio Handover

CELL.RD.HO.SUCC.RAT E

Remains unchanged

K3045: Congestion Rate on TCH (All Channels Busy)

CELL.KPI.TCH.CONGES TION.RATE

Remains unchanged

K3014: Traffic Volume on TCH

CELL.KPI.TCH.TRAF.ER L.TRAF

For details, see 5.1 System Capacity. If network traffic remains unchanged, use this counter with the LQI to observe capacity change.

After IBCA II is enabled:

l

–

The LQI improves by about 5 to 40 percents. The LQI reflects the Um receive quality. Monitor the KPIs related to the proportion of receive quality bands 6 and 7 to all receive quality bands. The KPIs belong to the function subset "Receive Quality Measurement Distribution per TRX(MR.RecvQualOrig.TRX)." For details, see 5.2 Network Performance.

–

Observe the changes in MOS based on the drive test (DT) result. For networks of the same capacity, the MOS increases by 0.02 to 0.2 points. For details, see 5.2 Network Performance.

Scenario 2: IBCA is enabled before enabling IBCA II. In this scenario, monitor the counters listed in Table 6-9.

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47



Table 6-9 Counters to be monitored

Counter Description

Counter Name

Expected Change After IBCA II Is Enabled

ZTR304: Call Drop Rate on TCH per cell(including Handover)

CELL.RATE.TCH.CALL. DROP.INCLUDE.HO

Increases by 10 to 20 percentage points

ZTR304A: Call Drop Rate on TCH per cell(Excluding Handover)

CELL.RATE.TCH.CALL. DROP.EXCLUDE.HO

Increases by 10 to 20 percentage points

RH303A: Success Rate of Radio Handover

CELL.RD.HO.SUCC.RAT E

Remains unchanged

K3045: Congestion Rate on TCH (All Channels Busy)

CELL.KPI.TCH.CONGES TION.RATE

Remains unchanged

After IBCA II is enabled, the LQI deteriorates by 10 t o 20 percents.

6.6 Parameter Optimization Compare KPIs before and after IBCA II is enabled. Optimize parameters if KPI changes are inconsistent with the expected changes described in 6.5 Performance Monitoring.

6.6.1 Call Drop Rate Identify the top N cells with a high call drop rate and take optimization measures described in Table 6-10 for these cells. Table 6-10 Optimization items and measures

No.

Optimization Item

Optimization Measures

1

Frame bit offset and training sequence code (TSC)

Configure frame bit offsets for these cells and optimize their TSCs based on the TSC planning method. NOTE Different frame bit offset parameters are configured for different Um interface synchronization methods. BSC6900 , BSC6910 ) if the GPS Configure FRAMEBITOFFSET( synchronization or clock over IP support 1588v2 is used.

Configure BITOFFSET in the SET BSCSYNCOFF command and BITOFFSET in the SET BTSEXCURSION command if the Um interface software synchronization is used.

2

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TCHBUSYTHR ES

Decrease the value of TCHBUSYTHRES for IBCA II interfering neighboring cells to increase the proportion of calls using TCHHs and reduce interference.


48



No.

Optimization Item


3

HSN

l

4

Power control parameters

BSC6900 , BSC6910 ) to Set IBCASOFTBLKSWITCH( NO(No) while changing the HSN. This ensures that soft blocking is disabled in cells with HSN set to a value other than 0 and IBCA II enabled.

l

Change HSNs for all cells served by the BTS configured with top N cells based on network plan.

l

When the HSN for a cell changes from 0 to a value other than 0, the HSNs for other cells under the same BTS also need to be changed to ensure that the BTS uses the same HSN.

Adjust power control parameters to decrease the call drop rate and improve speech quality. For example, increase the values of ULREXQUALADJFCTR( BSC6900 , BSC6910 ) and DLREXQUALADJFCTR( BSC6900 , BSC6910 ). For details about the method for power control optimization, see Power Control Feature Parameter Description.

5

User-level power control parameters

Adjust user-level power control parameters to decrease the call drop rate. For example, increase the values of the following parameters: IBCAIIUserPCUlQaThrOffset( BSC6900 , BSC6910 ), IBCAIIUserPCDlQaThrOffset( BSC6900 , BSC6910 ), IBCAIIUserPCUlLevThrOffset( BSC6900 , BSC6910 ), and IBCAIIUserPCDlLevThrOffset( BSC6900 , BSC6910 ). However, this measure causes speech quality to deteriorate.

6.6.2 Handover Success Rate Analyze whether handover failures are caused by congestion or poor Um receive quality. l

l

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If handover failures are caused by congestion, increase the handover success rate by performing the procedure in 6.6.3 Congestion Rate. If handover failures are caused by poor Um receive quality, identify top N cells and take optimization measures described in Table 6-11 for these cells.


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Table 6-11 Optimization items and measures

No.

Optimization Item


1

Missing configurations of handover neighboring cells

l

Analyze the network topology for the BTS and check whether adjacent cells are configured as handover neighboring cells for each other. If not, configurations of handover neighboring cells are inappropriate. Run the ADD G2GNCELL command to optimize neighbor relationships.

l

Based on the traffic statistics of the measurement object "Measurement of GSM Cell-to-GSM Cell Performance(GCELL_GCELL)", analyze the top N cells and optimize neighbor relationships.

2

3

Missing or additional configurations of IBCA II interfering neighboring cells

TCHBUSYTHRES

Based on the planning result of IBCA II interfering neighboring cells, check whether there are missing or additional configurations of IBCA II interfering neighboring cells. Then, perform optimization based on the check result. Decrease the value of TCHBUSYTHRES( BSC6900 , BSC6910 ) for IBCA II interfering neighboring cells to increase the proportion of calls using TCHHs and reduce interference.

6.6.3 Congestion Rate Identify the top N cells with a high congestion rate and take optimization measures described in Table 6-12 for these cells. Table 6-12 Optimization items and measures

No.

Optimization Item


1

TCHBUSYTHRES

Decrease the value of the TCHBUSYTHRES( BSC6900 , BSC6910 ) parameter.

IBCA II soft blocking threshold

Decrease the IBCA II soft blocking threshold by 1 to 2 dB. If the congestion rate is still high, disable the soft blocking function.

2

6.7 Troubleshooting None

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7 Parameters

7

Parameters

Table 7-1 Parameters

Parame ter ID

NE

MML Feature Comma ID nd

Feature Name

Description

NCELL TYPE

BSC691 0

ADD G2GNC ELL

GBFD-1 17002

IBCA (Interfer ence Based Channel Allocati on)

Meaning: The parameter indicates whether the neighboring cell is a handover neighboring cell, an IBCA neighboring cell, or a handover and IBCA neighboring cell of the serving cell. If the parameter is set to HANDOVERNCELL(Handover Neighboring Cell), the neighboring cell is the handover neighboring cell but not the IBCA neighboring cell of the serving cell. If the parameter is set to IBCANCELL(IBCA Neighboring Cell), the neighboring cell is the IBCA neighboring cell but not the handover neighboring cell of the serving cell. If the parameter is set to HANDOVERANDIBCANCELL(Handover and IBCA Neighboring Cell), the neighboring cell is the handover neighboring cell and IBCA neighboring cell of the serving cell. IBCA neighboring cells are some neighboring cells of a serving cell with its IBCA algorithm enabled. There is co-channel or adjacent-channel interference between the IBCA neighboring cells and the serving cell. Handover neighboring cells are candidate target cells of the serving cell during a handover.

MOD G2GNC ELL

GBFD-1 10601 GBFD-5 10501

HUAW EI I Handov er HUAW EI II Handov er

GUI Value Range: HANDOVERNCELL(Handover Neighboring Cell), IBCANCELL(IBCA Neighboring Cell), HANDOVERANDIBCANCELL(Handover and IBCA Neighboring Cell) Unit: None Actual Value Range: HANDOVERNCELL, IBCANCELL, HANDOVERANDIBCANCELL Default Value: HANDOVERNCELL(Handover Neighboring Cell)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

NCELL TYPE

BSC690 0

ADD G2GNC ELL

GBFD-1 17002


Meaning: The parameter indicates whether the neighboring cell is a handover neighboring cell, an IBCA neighboring cell, or a handover and IBCA neighboring cell of the serving cell. If the parameter is set to HANDOVERNCELL(Handover Neighboring Cell), the neighboring cell is the handover neighboring cell but not the IBCA neighboring cell of the serving cell. If the parameter is set to IBCANCELL(IBCA Neighboring Cell), the neighboring cell is the IBCA neighboring cell but not the handover neighboring cell of the serving cell. If the parameter is set to HANDOVERANDIBCANCELL(Handover and IBCA Neighboring Cell), the neighboring cell is the handover neighboring cell and IBCA neighboring cell of the serving cell. IBCA neighboring cells are some neighboring cells of a serving cell with its IBCA algorithm enabled. There is co-channel or adjacent-channel interference between the IBCA neighboring cells and the serving cell. Handover neighboring cells are candidate target cells of the serving cell during a handover.

MOD G2GNC ELL

GBFD-1 10601 GBFD-5 10501

HUAW EI I Handov er HUAW EI II Handov er

GUI Value R ange: HANDOVERNCELL(Handover Neighboring Cell), IBCANCELL(IBCA Neighboring Cell), HANDOVERANDIBCANCELL(Handover and IBCA Neighboring Cell) Unit: None Actual Value Range: HANDOVERNCELL, IBCANCELL, HANDOVERANDIBCANCELL Default Value: HANDOVERNCELL(Handover Neighboring Cell) IBCAI NBSCI NFORP TPRD

BSC691 0

SET OTHSO FTPAR A

GBFD-1 17002


Meaning: Period of intra-BSC information interaction. The information is used to estimate IBCA CIR. The calls in the same cell under the BSC may be distributed on different CPUs. Therefore, the BSC needs to report the information about calls and channel occupation status in the same IBCA neighboring cell group on each CPU to the MCP XPU at a period specified by this parameter. GUI Value Range: 100~6000 Unit: ms Actual Value Range: 100~6000 Default Value: 2000

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAI NBSCI NFORP TPRD

BSC690 0

SET OTHSO FTPAR A

GBFD-1 17002


Meaning: Period of intra-BSC information interaction. The information is used to estimate IBCA CIR. The calls in the same cell under the BSC may be distributed on different CPUs. Therefore, the BSC needs to report the information about calls and channel occupation status in the same IBCA neighboring cell group on each CPU to the MCP XPU at a period specified by this parameter. GUI Value Range: 100~6000 Unit: ms Actual Value Range: 100~6000 Default Value: 2000

IBCAO UTBSC INFOR PTPRD

BSC691 0

SET OTHSO FTPAR A

GBFD-1 17002


Meaning: Period of inter-BSC information interaction. The information is used to estimate IBCA CIR. If the IBCA neighboring group includes an external cell, the information about calls and channel occupation status in this cell needs to be reported to the corresponding BSC over an inter-BSC link at a period specified by this parameter.To ensure that the period for reporting a call message is the same as that for reporting a channel occupation message, you are advised to set the value of this parameter to integer multiple of 200. GUI Value Range: 100~6000 Unit: ms Actual Value Range: 100~6000 Default Value: 4000

IBCAO UTBSC INFOR PTPRD

BSC690 0

SET OTHSO FTPAR A

GBFD-1 17002


Meaning: Period of inter-BSC information interaction. The information is used to estimate IBCA CIR. If the IBCA neighboring group includes an external cell, the information about calls and channel occupation status in this cell needs to be reported to the corresponding BSC over an inter-BSC link at a period specified by this parameter.To ensure that the period for reporting a call message is the same as that for reporting a channel occupation message, you are advised to set the value of this parameter to integer multiple of 200. GUI Value Range: 100~6000 Unit: ms Actual Value Range: 100~6000 Default Value: 4000

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7 Parameters

Parame ter ID

NE


Feature Name

Description

MCPLo adOptS witch

BSC691 0

SET BSCEX SOFTP ARA

GBFD-1 17002


Meaning: Whether to enable the MCP load optimization function. When this parameter is set to ON: If the BSC does not update the call information and channel occupation information on each CPU, the BSC does not send the information to the MCP board. This reduces the information processing load of the MCP board. If the BSC updates the call information and channel occupation information on each CPU, the BSC sends the information to the MCP board in the BSC at the period specified by "IBCAINBSCINFORPTPRD" and to the MCP boards in other BSCs at the period specified by "IBCAOUTBSCINFORPTPRD". When this parameter is set to OFF, the BSC sends the call information and channel occupation information to the MCP board in the BSC at the period specified by "IBCAINBSCINFORPTPRD" and to the MCP boards in other BSCs at the period specified by "IBCAOUTBSCINFORPTPRD", regardless of whether the BSC updates the information on each CPU. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: ON(On)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

MCPLo adOptS witch

BSC690 0

SET BSCEX SOFTP ARA

GBFD-1 17002


Meaning: Whether to enable the MCP load optimization function. When this parameter is set to ON: If the BSC does not update the call information and channel occupation information on each CPU, the BSC does not send the information to the MCP board. This reduces the information processing load of the MCP board. If the BSC updates the call information and channel occupation information on each CPU, the BSC sends the information to the MCP board in the BSC at the period specified by "IBCAINBSCINFORPTPRD" and to the MCP boards in other BSCs at the period specified by "IBCAOUTBSCINFORPTPRD". When this parameter is set to OFF, the BSC sends the call information and channel occupation information to the MCP board in the BSC at the period specified by "IBCAINBSCINFORPTPRD" and to the MCP boards in other BSCs at the period specified by "IBCAOUTBSCINFORPTPRD", regardless of whether the BSC updates the information on each CPU. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: ON(On)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

LGCAP PTYPE

BSC690 0

ADD BRD

MRFD210301

Configu ration Manage ment

Meaning: Logical function type of the board OAM: Operation And Maintenance Process TDM_Switching: TDM switching process GCP: All the GCP subsystems are configured as CPUS to act as the control plane processing subsystems for GSM BSC RGCP: Subsystem 0 of RGCP is configured as the MPU subsystem to act as the resource management subsystem. The other subsystems are configured as CPUS to act as the control plane processing subsystems for GSM BSC MCP: Mathematics Computing Process, which includes Interference Based Channel Allocation (IBCA) GTC: GSM BSC TC Process GPCU: GSM BSC PCU Process IP: GOUc/IP IP over GE Optical interface, GOUa/IP IP over GE Optical interface, PEUa/IP IP over E1/T1/J1 interface, PEUc/IP IP over E1/T1/J1 interface, FG2c/IP IP over FE/GE interface (logical function type of GbIP not support configured), FG2e/IP IP over FE/GE interface (logical function type of GbIP not support configured), FG2a/IP IP over FE/GE interface, POUc/IP IP over channelized Optical STM-1/OC-3 interface, FG2d/IP Electronic FE/GE interface unit, GOUd/IP GE Optical interface Unit, GOUe/IP GE Optical interface Unit FR: PEUa/FR Frame Relay over E1/T1/J1 interface, PEUc/FR Frame Relay over E1/T1/J1 interface HDLC: PEUa/HDLC Packet over E1/T1/J1 interface, PEUc/HDLC Packet over E1/T1/J1 interface TDM: POUc/TDM channelized Optical STM-1/OC-3 interface GbIP: FG2a/GbIP GSM BSC Gb IP interface Abis_TDM: EIUa/Abis_TDM and EIUb/Abis_TDM E1/T1 circuit Interface for Abis, OIUa/Abis_TDM and OIUb/Abis_TDM channelized Optical STM-1 Interface for Abis Ater_TDM: EIUa/Ater_TDM and EIUb/Ater_TDM E1/T1 circuit Interface for Ater, OIUa/Ater_TDM and OIUb/Ater_TDM channelized Optical STM-1 Interface for Ater

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Parame ter ID

NE


7 Parameters

Feature Name

Description

Pb_TDM: EIUa/Pb_TDM and EIUb/Pb_TDM E1/T1 circuit Interface for Pb, OIUa/Pb_TDM and OIUb/ Pb_TDM channelized Optical STM-1 Interface for Pb A_TDM: EIUa/A_TDM and EIUb/A_TDM E1/T1 circuit Interface for A OIUa/A_TDM and OIUb/ A_TDM channelized Optical STM-1 Interface for A Abis_IP: PEUa/Abis_IP IP interface for Abis SAU: Service Aware Unit. It filters and takes statistics of the data reported by NEs and reports the result to the Nastar server NIU: Network Intelligence Unit NASP: Network Assistant Service Processing GASP: General Application Service Processing GUEP: GSM User Plane Enhancement Processing GUI Value Range: A_TDM, Abis_IP, Abis_TDM, Ater_TDM, FR, GbIP, GCP, GPCU, GTC, HDLC, IP, MCP, NASP, NIU, OAM, Pb_TDM, RGCP, SAU, TDM_Switching, TDM, GUEP, GASP, MAC_Switching, Clock, Clock_with_GPS Unit: None Actual Value Range: A_TDM, Abis_IP, Abis_TDM, Ater_TDM, FR, GbIP, GCP, GPCU, GTC, HDLC, IP, MCP, NASP, NIU, OAM, Pb_TDM, RGCP, SAU, TDM_Switching, TDM, GUEP, GASP Default Value: None

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7 Parameters

Parame ter ID

NE


Feature Name

Description

LGCAP PTYPE

BSC691 0

ADD BRD

MRFD210301


Meaning: Logical function type of the board GTC: GSM BSC TC Process IP: IP over channelized Optical STM-1/OC-3 interface TDM: TDM over channelized Optical STM-1/OC-3 interface GCUP: GSM BSC control-plane and user-plane processing NASP: Network Assistant Service Processing GMCP: GSM BSC Mathematics Calculation Processing GASP: Gener al Application Service Processing NIU: Network Intelligence Unit GUEP: GSM BSC User Plane Enhancement Processing GUI Value Range: GCUP, GMCP, GTC, GASP, IP, NASP, TDM, NIU, GUEP, OAM, MAC_Switching, Clock, Clock_with_GPS, RMP, SAU Unit: None Actual Value Range: GCUP, GMCP, GTC, GASP, IP, NASP, TDM, NIU, GUEP Default Value: None

IBCAA LLOW ED

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002

IBCA Meaning: Whether to enable the IBCA algorithm. If (Interfer the value of this parameter is changed from YES to ence NO, a CS cell resets and the services in the cell are Based interrupted. Channel GUI Value Range: NO(No), YES(Yes) Allocati Unit: None on) Actual Value Range: NO, YES Default Value: NO(No)

IBCAA LLOW ED

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002

IBCA Meaning: Whether to enable the IBCA algorithm. If (Interfer the value of this parameter is changed from YES to ence NO, a CS cell resets and the services in the cell are Based interrupted. Channel GUI Value Range: NO(No), YES(Yes) Allocati Unit: None on) Actual Value Range: NO, YES Default Value: NO(No)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII Allowed

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether the IBCA II function is enabled. If this parameter is set to ON, IBCA II is enabled. If this parameter is set to OFF, IBCA II is disabled. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

IBCAII Allowed

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether the IBCA II function is enabled. If this parameter is set to ON, IBCA II is enabled. If this parameter is set to OFF, IBCA II is disabled. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

IBCAC ALLIN FOFIL TERLE N

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Upon receiving measurement reports (MRs), the network needs to filter the measurement values in consecutive MRs to indicate the actual radio environment. This parameter specifies the length for filtering path loss. The mapping between the GUI value and the actual value is as follows: Uplink TCHs: 480-7680; step: 480; unit: ms Uplink SDCCHs: 470-7520; step: 470; unit: ms GUI Value Range: 1~16 Unit: 470ms; 480ms Actual Value Range: 480~7680(TCH); 470~7520(SDCCH) Default Value: 10

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAC ALLIN FOFIL TERLE N

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Upon receiving measurement reports (MRs), the network needs to filter the measurement values in consecutive MRs to indicate the actual radio environment. This parameter specifies the length for filtering path loss. The mapping between the GUI value and the actual value is as follows: Uplink TCHs: 480-7680; step: 480; unit: ms Uplink SDCCHs: 470-7520; step: 470; unit: ms GUI Value Range: 1~16 Unit: 470ms; 480ms Actual Value Range: 480~7680(TCH); 470~7520(SDCCH) Default Value: 10

IBCAII InterBs cHoInfo Sw

BSC690 0

ADD GEXT2 GCELL MOD GEXT2 GCELL

GBFD-1 19511

IBCA II

Meaning: Whether to transmit call measurement information for interference evaluation during an inter-BSC handover when the IBCA II feature is enabled. If this parameter is set to ON, the MSC transparently transmits the HANDOVER REQUIRED message that contains the old BSS to new BSS information IE to another BSC so that the target cell receives call measurement information for interference evaluation when IBCA II is enabled. If this parameter is set to OFF, the call measurement information for interference evaluation is not transmitted during an inter-BSC handover. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII InterBs cHoInfo Sw

BSC691 0

ADD GEXT2 GCELL

GBFD-1 19511

IBCA II

Meaning:

MOD GEXT2 GCELL

Whether to transmit call measurement information for interference evaluation during an inter-BSC handover when the IBCA II feature is enabled. If this parameter is set to ON, the MSC transparently transmits the HANDOVER REQUIRED message that contains the old BSS to new BSS information IE to another BSC so that the target cell receives call measurement information for interference evaluation when IBCA II is enabled. If this parameter is set to OFF, the call measurement information for interference evaluation is not transmitted during an inter-BSC handover. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

IBCAD LPATH LOSSO FF

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002

IBCA Meaning: (Interfer Difference between uplink path loss and downlink ence path loss. This parameter is used to estimate the Based downlink path loss when the path loss cannot be Channel directly obtained from the measurement report (MR). Allocati The downlink path loss can be calculated as follows: on) Downlink path loss = Uplink path loss + IBCA downlink path loss offset. This parameter should be set according to the combiner loss and the gain of dual-antenna receive of the BTS where the cell is allocated. That is, IBCA downlink path loss offset = Combiner loss of the BTS + Gain of 2-way receive diversity of the BTS(3 dB). GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 7

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Parame ter ID

NE


IBCAD LPATH LOSSO FF

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002

7 Parameters

Feature Name

Description

IBCA Meaning: (Interfer Difference between uplink path loss and downlink ence path loss. This parameter is used to estimate the Based downlink path loss when the path loss cannot be Channel directly obtained from the measurement report (MR). Allocati The downlink path loss can be calculated as follows: on) Downlink path loss = Uplink path loss + IBCA downlink path loss offset. This parameter should be set according to the combiner loss and the gain of dual-antenna receive of the BTS where the cell is allocated. That is, IBCA downlink path loss offset = Combiner loss of the BTS + Gain of 2-way receive diversity of the BTS(3 dB). GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 7

IBCAS CELLP ATHLO SS

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002

IBCA Meaning: This parameter specifies the path loss (Interfer between the MS and the serving cell when the path ence loss cannot be directly obtained from the measurement Based reports. Channel GUI Value Range: 0~160 Allocati Unit: dB on) Actual Value Range: 0~160 Default Value: 110

IBCAS CELLP ATHLO SS

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002

IBCA Meaning: This parameter specifies the path loss (Interfer between the MS and the serving cell when the path ence loss cannot be directly obtained from the measurement Based reports. Channel GUI Value Range: 0~160 Allocati Unit: dB on) Actual Value Range: 0~160 Default Value: 110

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAN CELLP ATHLO SSESTI MATE

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: This parameter is used to estimate the receive level of the IBCA neighboring cell that is not measured. When the information about less than six neighboring cells is reported in N (N is specified by IBCA Non Measurement Ncell Stat. Num) consecutive measurement reports, or the number of reported neighboring cells is smaller than the number of configured neighboring cells, the receive level of the IBCA neighboring cell that is not reported is estimated. This estimated value is specified by this parameter. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 0

IBCAN CELLP ATHLO SSESTI MATE

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: This parameter is used to estimate the receive level of the IBCA neighboring cell that is not measured. When the information about less than six neighboring cells is reported in N (N is specified by IBCA Non Measurement Ncell Stat. Num) consecutive measurement reports, or the number of reported neighboring cells is smaller than the number of configured neighboring cells, the receive level of the IBCA neighboring cell that is not reported is estimated. This estimated value is specified by this parameter. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 0

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAR XLEVO FFSET

BSC690 0

ADD G2GNC ELL

GBFD-1 17002


Meaning: Unmeasured receive level of IBCA neighboring cells. If the number of neighboring cells reported in consecutive N measurement reports (N is specified by "IBCANONMEANCELLSTATNUM") is smaller than that of the actually configured neighboring cells, this parameter is used to estimate the unmeasured receive level of IBCA neighboring cells. The estimated value is equal to the value of "IBCANCELLPATHLOSSESTIMATE" or the signal level of the unmeasured IBCA neighboring cells is the measured signal level of the neighboring cells (including non-IBCA neighboring cells) minus the value of "IBCARXLEVOFFSET".

MOD G2GNC ELL

GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 10 IBCAR XLEVO FFSET

BSC691 0

ADD G2GNC ELL MOD G2GNC ELL

GBFD-1 17002


Meaning: Unmeasured receive level of IBCA neighboring cells. If the number of neighboring cells reported in consecutive N measurement reports (N is specified by "IBCANONMEANCELLSTATNUM") is smaller than that of the actually configured neighboring cells, this parameter is used to estimate the unmeasured receive level of IBCA neighboring cells. The estimated value is equal to the value of "IBCANCELLPATHLOSSESTIMATE" or the signal level of the unmeasured IBCA neighboring cells is the measured signal level of the neighboring cells (including non-IBCA neighboring cells) minus the value of "IBCARXLEVOFFSET". GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 10

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Parame ter ID

NE


IBCAN ONME ANCEL LSTAT NUM

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002

7 Parameters

Feature Name

Description

IBCA Meaning: This parameter is used to estimate the (Interfer number of measurement reports when the receive ence level of the IBCA neighboring cell is not measured. Based When the information about less than six neighboring Channel cells is reported in N (N is specified by this Allocati parameter) consecutive measurement reports, or the on) number of reported neighboring cells is smaller than the number of configured neighboring cells, the receive level of the IBCA neighboring cell that is not reported is estimated. GUI Value Range: 0~16 Unit: None Actual Value Range: 0~16 Default Value: 4

IBCAN ONME ANCEL LSTAT NUM

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002

IBCA Meaning: This parameter is used to estimate the (Interfer number of measurement reports when the receive ence level of the IBCA neighboring cell is not measured. Based When the information about less than six neighboring Channel cells is reported in N (N is specified by this Allocati parameter) consecutive measurement reports, or the on) number of reported neighboring cells is smaller than the number of configured neighboring cells, the receive level of the IBCA neighboring cell that is not reported is estimated. GUI Value Range: 0~16 Unit: None Actual Value Range: 0~16 Default Value: 4

IBCAP ATHLO SSOFF

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002

IBCA Meaning: (Interfer Path loss offset. It is used to calculate the path loss ence between an MS and a neighboring cell if the path loss Based cannot be obtained from the measurement reports. The Channel formula is as follows: Allocati Path loss between an MS and a neighboring cell = on) Path loss between the MS and the serving cell + Value of this parameter. It is recommended that this parameter be set to 15 for neighboring cells at layer 1 and to 25 for neighboring cells at other layers. GUI Value Range: 0~50 Unit: dB Actual Value Range: 0~50 Default Value: 15

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Parame ter ID

NE


IBCAP ATHLO SSOFF

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002

7 Parameters

Feature Name

Description

IBCA Meaning: (Interfer Path loss offset. It is used to calculate the path loss ence between an MS and a neighboring cell if the path loss Based cannot be obtained from the measurement reports. The Channel formula is as follows: Allocati Path loss between an MS and a neighboring cell = on) Path loss between the MS and the serving cell + Value of this parameter. It is recommended that this parameter be set to 15 for neighboring cells at layer 1 and to 25 for neighboring cells at other layers. GUI Value Range: 0~50 Unit: dB Actual Value Range: 0~50 Default Value: 15

IBCAM AXINT FSRCN UM

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: The N established calls that have the strongest interference with newly established calls during the assessment of the IBCA interference. GUI Value Range: 5~40 Unit: None Actual Value Range: 5~40 Default Value: 20

IBCAM AXINT FSRCN UM

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: The N established calls that have the strongest interference with newly established calls during the assessment of the IBCA interference. GUI Value Range: 5~40 Unit: None Actual Value Range: 5~40 Default Value: 20

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII PSDLIn tfOffset

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter specifies the transmit power offset of PS interference sources during IBCA assessment. The actual transmit power equals the maximum transmit power of the interference source minus the value of this parameter. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~30 Unit: dB Actual Value Range: 0~30 Default Value: 3

IBCAII PSDLIn tfOffset

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter specifies the transmit power offset of PS interference sources during IBCA assessment. The actual transmit power equals the maximum transmit power of the interference source minus the value of this parameter. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~30 Unit: dB Actual Value Range: 0~30 Default Value: 3

IBCAO utBSC MsgSnd CtrlSw

BSC690 0

SET BSCEX SOFTP ARA

GBFD-1 17002

IBCA Meaning: Whether messages are sent in TLV format (Interfer between BSCs after IBCA is enabled. If this ence parameter is set to ON, the messages are sent in TLV Based format between BSCs. The TLV format simplifies Channel some information elements (IEs) in the messages and Allocati therefore reduces the message flow between BSCs. on) GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

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Parame ter ID

NE


IBCAO utBSC MsgSnd CtrlSw

BSC691 0

SET BSCEX SOFTP ARA

GBFD-1 17002

7 Parameters

Feature Name

Description

IBCA Meaning: Whether messages are sent in TLV format (Interfer between BSCs after IBCA is enabled. If this ence parameter is set to ON, the messages are sent in TLV Based format between BSCs. The TLV format simplifies Channel some information elements (IEs) in the messages and Allocati therefore reduces the message flow between BSCs. on) GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

IBCAS OFTBL KSWIT CH

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Whether to deny the access of a call when none of the MAIO evaluation results meets the C/I ratio requirement of the call during channel assignment. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: YES(Yes)

IBCAS OFTBL KSWIT CH

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Whether to deny the access of a call when none of the MAIO evaluation results meets the C/I ratio requirement of the call during channel assignment. GUI Value Range: NO(No), YES(Yes) Unit: None Actual Value Range: NO, YES Default Value: YES(Yes)

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Parame ter ID

NE


Feature Name

Description

IBCAF RSOFT BLKTH RD

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Lowest CIR allowed for FR/EFR services. When the CIR of an idle channel is lower than the threshold specified by this parameter or the CIR of an established call becomes lower than the threshold specified by this parameter due to the interference caused by a new call that is expected to occupy an idle channel: If "IBCASOFTBLKSWITCH" is set to YES(Yes), the BSC cannot allocate the idle channel. If "IBCASOFTBLKSWITCH" is set to NO(No), the BSC preferentially allocates other channels. GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 4

IBCAF RSOFT BLKTH RD

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Lowest CIR allowed for FR/EFR services. When the CIR of an idle channel is lower than the threshold specified by this parameter or the CIR of an established call becomes lower than the threshold specified by this parameter due to the interference caused by a new call that is expected to occupy an idle channel: If "IBCASOFTBLKSWITCH" is set to YES(Yes), the BSC cannot allocate the idle channel. If "IBCASOFTBLKSWITCH" is set to NO(No), the BSC preferentially allocates other channels. GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 4

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Parame ter ID

NE


Feature Name

Description

IBCAH RSOFT BLKTH RD

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: This parameter specifies the lowest CIR allowed for the HR services. When the CIR of an idle channel is lower than the threshold specified by this parameter or the CIR of an established call becomes lower than the threshold specified by this parameter due to the interference caused by a new call that is expected to occupy an idle channel: If "IBCASOFTBLKSWITCH" is set to YES(Yes), the BSC cannot allocate the idle channel. If "IBCASOFTBLKSWITCH" is set to NO(No), the BSC preferentially allocates other channels. GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 6

IBCAH RSOFT BLKTH RD

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: This parameter specifies the lowest CIR allowed for the HR services. When the CIR of an idle channel is lower than the threshold specified by this parameter or the CIR of an established call becomes lower than the threshold specified by this parameter due to the interference caused by a new call that is expected to occupy an idle channel: If "IBCASOFTBLKSWITCH" is set to YES(Yes), the BSC cannot allocate the idle channel. If "IBCASOFTBLKSWITCH" is set to NO(No), the BSC preferentially allocates other channels. GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 6

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAA FRSOF TBLKT HRD

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Lowest CIR allowed for AMR FR services. When the CIR of an idle channel is lower than the threshold specified by this parameter or the CIR of an established call becomes lower than the threshold specified by this parameter due to the interference caused by a new call that is expected to occupy an idle channel: If "IBCASOFTBLKSWITCH" is set to YES(Yes), the BSC cannot allocate the idle channel. If "IBCASOFTBLKSWITCH" is set to NO(No), the BSC preferentially allocates other channels. GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 2

IBCAA FRSOF TBLKT HRD

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Lowest CIR allowed for AMR FR services. When the CIR of an idle channel is lower than the threshold specified by this parameter or the CIR of an established call becomes lower than the threshold specified by this parameter due to the interference caused by a new call that is expected to occupy an idle channel: If "IBCASOFTBLKSWITCH" is set to YES(Yes), the BSC cannot allocate the idle channel. If "IBCASOFTBLKSWITCH" is set to NO(No), the BSC preferentially allocates other channels. GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 2

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAA HRSOF TBLKT HRD

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Lowest CIR allowed for AMR HR services. When the CIR of an idle channel is lower than the threshold specified by this parameter or the CIR of an established call becomes lower than the threshold specified by this parameter due to the interference caused by a new call that is expected to occupy an idle channel: If "IBCASOFTBLKSWITCH" is set to YES(Yes), the BSC cannot allocate the idle channel. If "IBCASOFTBLKSWITCH" is set to NO(No), the BSC preferentially allocates other channels. GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 4

IBCAA HRSOF TBLKT HRD

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Lowest CIR allowed for AMR HR services. When the CIR of an idle channel is lower than the threshold specified by this parameter or the CIR of an established call becomes lower than the threshold specified by this parameter due to the interference caused by a new call that is expected to occupy an idle channel: If "IBCASOFTBLKSWITCH" is set to YES(Yes), the BSC cannot allocate the idle channel. If "IBCASOFTBLKSWITCH" is set to NO(No), the BSC preferentially allocates other channels. GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 4

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAW AFRSO FTBLK THRD

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: The lowest CIR that can be tolerated by IBCA WAMR FR. When the CIR of an idle channel is lower than the threshold specified by this parameter or the CIR of an established call becomes lower than the threshold specified by this parameter due to the interference caused by a new call that is expected to occupy an idle channel: If "IBCASOFTBLKSWITCH" is set to YES(Yes), the BSC cannot allocate the idle channel. If "IBCASOFTBLKSWITCH" is set to NO(No), the BSC preferentially allocates other channels. GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 0

IBCAW AFRSO FTBLK THRD

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: The lowest CIR that can be tolerated by IBCA WAMR FR. When the CIR of an idle channel is lower than the threshold specified by this parameter or the CIR of an established call becomes lower than the threshold specified by this parameter due to the interference caused by a new call that is expected to occupy an idle channel: If "IBCASOFTBLKSWITCH" is set to YES(Yes), the BSC cannot allocate the idle channel. If "IBCASOFTBLKSWITCH" is set to NO(No), the BSC preferentially allocates other channels. GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 0

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Parame ter ID

NE


VAMO SAHSU serDLS oftBloc kThd

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002 GBFD-1 15830

7 Parameters

Feature Name

Description

IBCA Meaning: Threshold for performing soft block on (Interfer VAMOS AMRHR users in a cell. If the CIR of a ence VAMOS AMRHR user is smaller than the value of Based this parameter, the BSC refuses to allocate any Channel TCHHs to this user. If the CIR of the VAMOS Allocati AMRHR user is greater than the value of this on) parameter, the BSC allocates a TCHH to this user. VAMOS

GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 6

VAMO SAHSU serDLS oftBloc kThd

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002 GBFD-1 15830

IBCA Meaning: Threshold for performing soft block on (Interfer VAMOS AMRHR users in a cell. If the CIR of a ence VAMOS AMRHR user is smaller than the value of Based this parameter, the BSC refuses to allocate any Channel TCHHs to this user. If the CIR of the VAMOS Allocati AMRHR user is greater than the value of this on) parameter, the BSC allocates a TCHH to this user. VAMOS

GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 6

VAMO SAFSUs erDLSo ftBlock Thd

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Soft block threshold of a VAMOS AMRFR/EFR call. If the CIR of a VAMOS AMRFR/EFR call is less than this parameter after a channel is allocated, this channel is blocked and not allowed to allocate. GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 9

VAMO SAFSUs erDLSo ftBlock Thd

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Soft block threshold of a VAMOS AMRFR/EFR call. If the CIR of a VAMOS AMRFR/EFR call is less than this parameter after a channel is allocated, this channel is blocked and not allowed to allocate. GUI Value Range: -63~63 Unit: dB Actual Value Range: -63~63 Default Value: 9

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Parame ter ID

NE


IBCAP DDYNT RENH ANCE

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002

7 Parameters

Feature Name

Description

IBCA Meaning: Whether to use the MAIO configured for (Interfer the TRX during TCH-to-PDCH conversion when the ence IBCA algorithm is used. If this parameter is set to Based ON(On), dynamic PDCHs use the MAIO configured Channel for the TRX. If this parameter is set to OFF(Off), Allocati dynamic PDCHs use an MAIO selected from the on) planned MAIO list. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: ON, OFF Default Value: OFF(Off)

IBCAP DDYNT RENH ANCE

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002

IBCA Meaning: Whether to use the MAIO configured for (Interfer the TRX during TCH-to-PDCH conversion when the ence IBCA algorithm is used. If this parameter is set to Based ON(On), dynamic PDCHs use the MAIO configured Channel for the TRX. If this parameter is set to OFF(Off), Allocati dynamic PDCHs use an MAIO selected from the on) planned MAIO list. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: ON, OFF Default Value: OFF(Off)

IBCAT GTCIR MAIOF IXED

BSC690 0

SET GTRX DEV

GBFD-1 17002


Meaning: CIR to control whether the configured MAIO is preferentially allocated to a TCH on the TRX.If this parameter is set to 0, the configured MAIO is allocated to a newly established call on a TCH on the TRX. If this parameter is set to a value in the range of 1 through 63 and the IBCA assessed CIR is greater than or equal to the value of this parameter when a newly established call uses the configured MAIO on the TRX, the MAIO configured on the TRX is preferentially allocated to a TCH on the TRX. If this parameter is set to 255, the optimal MAIO from MAIOs configured on all the TRXs with CIR of 255 or from those unconfigured MAIOs in the MAIO plan is allocated to a TCH on the TRX. GUI Value Range: 0~63;255 Unit: None Actual Value Range: 0~63, 255 Default Value: 255

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAT GTCIR MAIOF IXED

BSC691 0

SET GTRX DEV

GBFD-1 17002


Meaning: CIR to control whether the configured MAIO is preferentially allocated to a TCH on the TRX.If this parameter is set to 0, the configured MAIO is allocated to a newly established call on a TCH on the TRX. If this parameter is set to a value in the range of 1 through 63 and the IBCA assessed CIR is greater than or equal to the value of this parameter when a newly established call uses the configured MAIO on the TRX, the MAIO configured on the TRX is preferentially allocated to a TCH on the TRX. If this parameter is set to 255, the optimal MAIO from MAIOs configured on all the TRXs with CIR of 255 or from those unconfigured MAIOs in the MAIO plan is allocated to a TCH on the TRX. GUI Value Range: 0~63;255 Unit: None Actual Value Range: 0~63, 255 Default Value: 255

IBCAP DCHD YNTRA NTMR

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002

IBCA Meaning: Timer for penalizing a TCH. When the (Interfer IBCA algorithm is used, the BSC fails to convert a ence TCH to a PDCH if the conversion causes severe Based interference to other channels. If this parameter is set Channel to 0, the BSC converts the TCH to a PDCH without Allocati penalizing the TCH. on) GUI Value Range: 0~10 Unit: s Actual Value Range: 0~10 Default Value: 1

IBCAP DCHD YNTRA NTMR

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002

IBCA Meaning: Timer for penalizing a TCH. When the (Interfer IBCA algorithm is used, the BSC fails to convert a ence TCH to a PDCH if the conversion causes severe Based interference to other channels. If this parameter is set Channel to 0, the BSC converts the TCH to a PDCH without Allocati penalizing the TCH. on) GUI Value Range: 0~10 Unit: s Actual Value Range: 0~10 Default Value: 1

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII PriOptS witch

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether the BSC takes into account the increase in bit error rate (BER) of established calls caused by a new call when calculating the IBCA channel priority to facilitate channel allocation. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

IBCAII PriOptS witch

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether the BSC takes into account the increase in bit error rate (BER) of established calls caused by a new call when calculating the IBCA channel priority to facilitate channel allocation. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

IBCAII NewCal lFactor

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter specifies the weight of the CIR for a new call in IBCA priority. If this parameter is set to 10, the BSC considers only the CIR for a new call when calculating the IBCA priority. If this parameter is set to 0, the BSC does not consider the CIR for a new call when calculating the IBCA priority. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~10 Unit: None Actual Value Range: 0~1, step:0.1 Default Value: 9

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII NewCal lFactor

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter specifies the weight of the CIR for a new call in IBCA priority. If this parameter is set to 10, the BSC considers only the CIR for a new call when calculating the IBCA priority. If this parameter is set to 0, the BSC does not consider the CIR for a new call when calculating the IBCA priority. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~10 Unit: None Actual Value Range: 0~1, step:0.1 Default Value: 9

IBCAII BSC690 NewCal 0 lCIROff set

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Offset for the CIR of a new call the BSC uses when calculating the channel priority. The adjusted CIR of a new call equals the actual CIR of the new call plus the value of this parameter. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~126 Unit: dB Actual Value Range: -63~63 Default Value: 63

IBCAII BSC691 NewCal 0 lCIROff set

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Offset for the CIR of a new call the BSC uses when calculating the channel priority. The adjusted CIR of a new call equals the actual CIR of the new call plus the value of this parameter. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~126 Unit: dB Actual Value Range: -63~63 Default Value: 63

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII ULDem dOffset Thr

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Offset between uplink IBCA demodulation performance and downlink IBCA demodulation performance. The larger the value of this parameter, the better the uplink demodulation performance against the downlink demodulation performance. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~126 Unit: dB Actual Value Range: -63~63 Default Value: 63

IBCAII ULDem dOffset Thr

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Offset between uplink IBCA demodulation performance and downlink IBCA demodulation performance. The larger the value of this parameter, the better the uplink demodulation performance against the downlink demodulation performance. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~126 Unit: dB Actual Value Range: -63~63 Default Value: 63

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII EstFiltB adQual Thr

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Filtering threshold for an established call with poor receive quality when the IBCA feature is enabled. If the receive quality of an established call is greater than or equal to the value of this parameter, the receive quality and receive level carried in the current MR are used. If this parameter is set to 8, the BSC uses the original algorithm, and the configuration does not take effect. Set this parameter to a value from 0 to 7 when "HSN" is set to 0. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~8 Unit: None Actual Value Range: 0~8 Default Value: 7

IBCAII EstFiltB adQual Thr

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Filtering threshold for an established call with poor receive quality when the IBCA feature is enabled. If the receive quality of an established call is greater than or equal to the value of this parameter, the receive quality and receive level carried in the current MR are used. If this parameter is set to 8, the BSC uses the original algorithm, and the configuration does not take effect. Set this parameter to a value from 0 to 7 when "HSN" is set to 0. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~8 Unit: None Actual Value Range: 0~8 Default Value: 7

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IntfBan dEnhan ceSw

BSC690 0

SET GCELL OTHE XT

GBFD-1 17002


Meaning:

GBFD-1 11005

Enhance d Channel Assignm ent Algorith m

Whether to enable the enhanced interference band algorithm. If this parameter is set to ON: The BTS reports interference bands 1 to 5 and interference levels 0 to 63 simultaneously. The interference level is the receive level measured over the Um interface when the filtered channels are idle. The interference band that corresponds to an interference level is determined by "INTERFTHRES0", "INTERFTHRES1", "INTERFTHRES2", "INTERFTHRES3", "INTERFTHRES4", and "INTERFTHRES5". The BSC allocates channels to MSs based on interference levels and measures related counters based on interference bands. If this parameter is set to OFF: The BTS reports only interference bands 1 to 5. The BSC allocates channels and measures related counters based on interference bands. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IntfBan dEnhan ceSw

BSC691 0

SET GCELL OTHE XT

GBFD-1 17002


Meaning:

GBFD-1 11005


Whether to enable the enhanced interference band algorithm. If this parameter is set to ON: The BTS reports interference bands 1 to 5 and interference levels 0 to 63 simultaneously. The interference level is the receive level measured over the Um interface when the filtered channels are idle. The interference band that corresponds to an interference level is determined by "INTERFTHRES0", "INTERFTHRES1", "INTERFTHRES2", "INTERFTHRES3", "INTERFTHRES4", and "INTERFTHRES5". The BSC allocates channels to MSs based on interference levels and measures related counters based on interference bands. If this parameter is set to OFF: The BTS reports only interference bands 1 to 5. The BSC allocates channels and measures related counters based on interference bands. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

IBCAIn tfPunis hTHR

BSC690 0

SET GCELL OTHE XT

GBFD-1 17002

IBCA Meaning: Interference level threshold for the BSC to (Interfer penalize the TCH when the IBCA feature is enabled. ence If the evaluated MAIO is the MAIO configured for the Based TCH and the interference level of the evaluated TCH Channel is greater than the value of this parameter during TCH Allocati allocation, the BSC penalizes the TCH by lowering on) the priority of the TCH and preferentially allocates other TCHs to MSs. GUI Value Range: 0~63 Unit: None Actual Value Range: 0~63 Default Value: 63

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Parame ter ID

NE


IBCAIn tfPunis hTHR

BSC691 0

SET GCELL OTHE XT

GBFD-1 17002

7 Parameters

Feature Name

Description

IBCA Meaning: Interference level threshold for the BSC to (Interfer penalize the TCH when the IBCA feature is enabled. ence If the evaluated MAIO is the MAIO configured for the Based TCH and the interference level of the evaluated TCH Channel is greater than the value of this parameter during TCH Allocati allocation, the BSC penalizes the TCH by lowering on) the priority of the TCH and preferentially allocates other TCHs to MSs. GUI Value Range: 0~63 Unit: None Actual Value Range: 0~63 Default Value: 63

IBCAII IntfBnd OptSwit ch

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether the IBCA II interference band optimization algorithm is enabled so that the BSC can more accurately calculate the interference level in the IBCA II feature. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: ON(On)

IBCAII IntfBnd OptSwit ch

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether the IBCA II interference band optimization algorithm is enabled so that the BSC can more accurately calculate the interference level in the IBCA II feature. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: ON(On)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAM AIOUS MTD

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Method for a timeslot to select MAIO during IBCA estimation. If this parameter is set to 0(Max. optimized MAIO), a timeslot selects the optimized MAIO being evaluated. If this parameter is set to 1(Randomization MAIO), a timeslot randomly selects a MAIO. GUI Value Range: 0(Max. optimized MAIO), 1(Randomization MAIO) Unit: None Actual Value Range: 0, 1 Default Value: 0(Max. optimized MAIO)

IBCAM AIOUS MTD

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Method for a timeslot to select MAIO during IBCA estimation. If this parameter is set to 0(Max. optimized MAIO), a timeslot selects the optimized MAIO being evaluated. If this parameter is set to 1(Randomization MAIO), a timeslot randomly selects a MAIO. GUI Value Range: 0(Max. optimized MAIO), 1(Randomization MAIO) Unit: None Actual Value Range: 0, 1 Default Value: 0(Max. optimized MAIO)

IBCAC IREST ENHA NCE

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002

IBCA Meaning: IBCA CIR optimized assessment. This (Interfer parameter is used to control the range for CIR ence assessment. If this parameter is set to OFF, the Based optimized assessment function is disabled. If this Channel parameter is set to HOonly, the assessment is Allocati optimized in handover. If this parameter is set to on) HoandAss, the assessment is optimized in both handover and assignment. GUI Value Range: OFF(OFF), HOonly(HOonly), Assonly(Assonly), HOandAss(HOandAss) Unit: None Actual Value Range: OFF, HOonly, Assonly, HOandAss Default Value: OFF(OFF)

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Parame ter ID

NE


IBCAC IREST ENHA NCE

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002

7 Parameters

Feature Name

Description

IBCA Meaning: IBCA CIR optimized assessment. This (Interfer parameter is used to control the range for CIR ence assessment. If this parameter is set to OFF, the Based optimized assessment function is disabled. If this Channel parameter is set to HOonly, the assessment is Allocati optimized in handover. If this parameter is set to on) HoandAss, the assessment is optimized in both handover and assignment. GUI Value Range: OFF(OFF), HOonly(HOonly), Assonly(Assonly), HOandAss(HOandAss) Unit: None Actual Value Range: OFF, HOonly, Assonly, HOandAss Default Value: OFF(OFF)

IBCAII HRPriS witch

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether the BSC preferentially allocates TCHHs when the IBCA feature is enabled. If this parameter is set to ON, the BSC preferentially allocates TCHHs. If this parameter is set to OFF, the BSC uses the original algorithm. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

IBCAII HRPriS witch

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether the BSC preferentially allocates TCHHs when the IBCA feature is enabled. If this parameter is set to ON, the BSC preferentially allocates TCHHs. If this parameter is set to OFF, the BSC uses the original algorithm. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

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Parame ter ID

NE


Feature Name

Description

AMRH ALFTO FULLH OTHR ESH

BSC690 0

SET GCELL HOBAS IC

GBFD-5 10501

HUAW EI II Handov er

Meaning: When "AMRFULLTOHALFHOALLOW" is set to YES and the load of a cell is lower than this threshold, a decision on AMR H-F handovers is made. When "IBCAIIHRPriSw" is set to YES and the load of a cell is lower than this threshold, do not enable the IBCA II half-rate TCHH allocation optimization function. GUI Value Range: 0~100 Unit: % Actual Value Range: 0~100 Default Value: 15

AMRH ALFTO FULLH OTHR ESH

BSC691 0

SET GCELL HOBAS IC

GBFD-5 10501


Meaning: When "AMRFULLTOHALFHOALLOW" is set to YES and the load of a cell is lower than this threshold, a decision on AMR H-F handovers is made. When "IBCAIIHRPriSw" is set to YES and the load of a cell is lower than this threshold, do not enable the IBCA II half-rate TCHH allocation optimization function. GUI Value Range: 0~100 Unit: % Actual Value Range: 0~100 Default Value: 15

NOAM RHALF TOFUL LTHRE SH

BSC690 0

SET GCELL HOBAS IC

GBFD-5 10501


Meaning: When "NOAMRFULLTOHALFHOALLOW" is set to YES and the load of a cell is lower than this threshold, a decision on non-AMR H-F handovers is made. When "IBCAIIHRPriSw" is set to ON and the load of a cell is lower than this threshold, do not enable the IBCA II half-rate TCHH allocation optimization function. GUI Value Range: 0~100 Unit: % Actual Value Range: 0~100 Default Value: 25

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7 Parameters

Parame ter ID

NE


Feature Name

Description

NOAM RHALF TOFUL LTHRE SH

BSC691 0

SET GCELL HOBAS IC

GBFD-5 10501


Meaning: When "NOAMRFULLTOHALFHOALLOW" is set to YES and the load of a cell is lower than this threshold, a decision on non-AMR H-F handovers is made. When "IBCAIIHRPriSw" is set to ON and the load of a cell is lower than this threshold, do not enable the IBCA II half-rate TCHH allocation optimization function. GUI Value Range: 0~100 Unit: % Actual Value Range: 0~100 Default Value: 25

IBCAT ARGET CIRTH RSH

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Threshold for a MAIO access. If "IBCAMAIOUSMTD" is set to 1(Randomization MAIO) and the value of the MAIO CIR i s higher than this threshold, this MAIO can be allocated to calls. GUI Value Range: 0~63 Unit: None Actual Value Range: 0~63 Default Value: 20

IBCAT ARGET CIRTH RSH

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Threshold for a MAIO access. If "IBCAMAIOUSMTD" is set to 1(Randomization MAIO) and the value of the MAIO CIR i s higher than this threshold, this MAIO can be allocated to calls. GUI Value Range: 0~63 Unit: None Actual Value Range: 0~63 Default Value: 20

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7 Parameters

Parame ter ID

NE


Feature Name

Description

CHALL OCSTR ATEGY

BSC690 0

SET GCELL CHMG BASIC

GBFD-1 11005


Meaning: Channel assignment priority of the cell. If this parameter is set to CAPABILITY, the factors are listed as follows in a descending order of priority: capacity factors, quality factors, PS cooperation factors, continuity factors, and management factors. If this parameter is set to QUALITY, the factors are listed as follows in a descending order of priority: quality factors, capacity factors, PS cooperation factors, continuity factors, and management factors. If this parameter is set to PSRELATIVELY, the factors are listed as follows in a descending order of priority: capacity factors, PS cooperation factors, quality factors, continuity factors, and management factors. If this parameter is set to PSABSOLUTELY, the factors are listed as follows in a descending order of priority: PS cooperation factors, capacity factors, quality factors, continuity factors, and management factors. If this parameter is set to CONTINUITY, the factors are listed as follows in a descending order of priority: capacity factors, PS cooperation factors, continuity factors, quality factors, and management factors. If this parameter is set to MANAGEMENT, the factors are listed as follows in a descending order of priority: management factors, capacity factors, quality factors, PS cooperation factors, and continuity factors. GUI Value Range: CAPABILITY(Capability preferred), QUALITY(Quality preferred), PSRELATIVELY(PS relatively preferred), PSABSOLUTELY(PS absolutely preferred), CONTINUITY(Continuity preferred), MANAGEMENT(Management preferred) Unit: None Actual Value Range: CAPABILITY, QUALITY, PSRELATIVELY, PSABSOLUTELY, CONTINUITY, MANAGEMENT Default Value: CAPABILITY(Capability preferred)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

CHALL OCSTR ATEGY

BSC691 0

SET GCELL CHMG BASIC

GBFD-1 11005


Meaning: Channel assignment priority of the cell. If this parameter is set to CAPABILITY, the factors are listed as follows in a descending order of priority: capacity factors, quality factors, PS cooperation factors, continuity factors, and management factors. If this parameter is set to QUALITY, the factors are listed as follows in a descending order of priority: quality factors, capacity factors, PS cooperation factors, continuity factors, and management factors. If this parameter is set to PSRELATIVELY, the factors are listed as follows in a descending order of priority: capacity factors, PS cooperation factors, quality factors, continuity factors, and management factors. If this parameter is set to PSABSOLUTELY, the factors are listed as follows in a descending order of priority: PS cooperation factors, capacity factors, quality factors, continuity factors, and management factors. If this parameter is set to CONTINUITY, the factors are listed as follows in a descending order of priority: capacity factors, PS cooperation factors, continuity factors, quality factors, and management factors. If this parameter is set to MANAGEMENT, the factors are listed as follows in a descending order of priority: management factors, capacity factors, quality factors, PS cooperation factors, and continuity factors. GUI Value Range: CAPABILITY(Capability preferred), QUALITY(Quality preferred), PSRELATIVELY(PS relatively preferred), PSABSOLUTELY(PS absolutely preferred), CONTINUITY(Continuity preferred), MANAGEMENT(Management preferred) Unit: None Actual Value Range: CAPABILITY, QUALITY, PSRELATIVELY, PSABSOLUTELY, CONTINUITY, MANAGEMENT Default Value: CAPABILITY(Capability preferred)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAF REEBC CHCH ANTH RSHOL D

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: If the number of idle TCHs on the BCCH TRX is smaller than this threshold, some calls on the BCCH TRX are handed over to non-BCCH TRXs. In this way, idle TCHs on the BCCH TRX are available and can be preferentially allocated to the calls handed over to the IBCA cells during an incoming BSC handover. GUI Value Range: 0~3 Unit: None Actual Value Range: 0~3 Default Value: 0

IBCAF REEBC CHCH ANTH RSHOL D

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: If the number of idle TCHs on the BCCH TRX is smaller than this threshold, some calls on the BCCH TRX are handed over to non-BCCH TRXs. In this way, idle TCHs on the BCCH TRX are available and can be preferentially allocated to the calls handed over to the IBCA cells during an incoming BSC handover. GUI Value Range: 0~3 Unit: None Actual Value Range: 0~3 Default Value: 0

IBCAII MAIO OptSw

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether to enable the optimized MAIO allocation policy after IBCA II is enabled. The value ON indicates the optimized MAIO allocation policy is enabled.The value OFF indicates the optimized MAIO allocation policy is disabled. If this parameter is set to ON and all cells under a site are in radio frequency hopping mode, the BSC allocates different MAIOs (this avoids co-channel interference) to the same timeslots in cells with the same MA group under the site. In other scenarios, the BSC allocates different MAIOs to the same timeslots in a cell. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII MAIO OptSw

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether to enable the optimized MAIO allocation policy after IBCA II is enabled. The value ON indicates the optimized MAIO allocation policy is enabled.The value OFF indicates the optimized MAIO allocation policy is disabled. If this parameter is set to ON and all cells under a site are in radio frequency hopping mode, the BSC allocates different MAIOs (this avoids co-channel interference) to the same timeslots in cells with the same MA group under the site. In other scenarios, the BSC allocates different MAIOs to the same timeslots in a cell. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserPC Switch

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether to enable the user-level power control algorithm so that the BSC can identify calls to drop based on MRs, search for the primary interference source call, and reduce the transmit power of the primary interference source call. OFF: The user-level power control algorithm is disabled. ULSWITCH: The BSC searches for and performs power control on the uplink primary interference source call. DLSWITCH: The BSC searches for and performs power control on the downlink primary interference source call. ULDLSWITCH: The BSC searches for and performs power control on the uplink and downlink primary interference source calls. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ULSWITCH(UpLink Switch), DLSWITCH(Downlink Switch), ULDLSWITCH(Uplink and Downlink Switch) Unit: None Actual Value Range: OFF, ULSWITCH, DLSWITCH, ULDLSWITCH Default Value: DLSWITCH(Downlink Switch)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserPC Switch

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether to enable the user-level power control algorithm so that the BSC can identify calls to drop based on MRs, search for the primary interference source call, and reduce the transmit power of the primary interference source call. OFF: The user-level power control algorithm is disabled. ULSWITCH: The BSC searches for and performs power control on the uplink primary interference source call. DLSWITCH: The BSC searches for and performs power control on the downlink primary interference source call. ULDLSWITCH: The BSC searches for and performs power control on the uplink and downlink primary interference source calls. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value R ange: OFF(Off), ULSWITCH(U pLink Switch), DLSWITCH(Downlink Switch), ULDLSWITCH(Uplink and Downlink Switch) Unit: None Actual Value Range: OFF, ULSWITCH, DLSWITCH, ULDLSWITCH Default Value: DLSWITCH(Downlink Switch)

IBCAII UserPC Stat

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter is used to specify the P/N criterion for triggering the search of interference sources. Specifically, if P measurement reports (MRs) of N MRs reach the threshold for user-level power control, the search of interference sources is triggered. This parameter specifies the value of N in the P/N criterion. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 1~32 Unit: 480ms Actual Value Range: 480~15360 Default Value: 4

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserPC Stat

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter is used to specify the P/N criterion for triggering the search of interference sources. Specifically, if P measurement reports (MRs) of N MRs reach the threshold for user-level power control, the search of interference sources is triggered. This parameter specifies the value of N in the P/N criterion. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 1~32 Unit: 480ms Actual Value Range: 480~15360 Default Value: 4

IBCAII UserPC Last

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter is used to specify the P/N criterion for triggering the search of interference sources. Specifically, if P measurement reports (MRs) of N MRs reach the threshold for user-level power control, the search of interference sources is triggered. This parameter specifies the value of P in the P/N criterion. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 1~32 Unit: 480ms Actual Value Range: 480~15360 Default Value: 4

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserPC Last

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II II

Meaning: This parameter is used to specify the P/N criterion for triggering the search of interference sources. Specifically, Specifically, if P measurement reports (MRs) of N MRs reach the threshold for user-level power control, the search of interference sources is triggered. This parameter specifies specifies the value of P in the P/N criterion. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 1~32 Unit: 480ms Actual Value Range: 480~15360 Default Value: 4

IBCAII UserPC JudgQu alThr

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II II

Meaning: Quality threshold for user-level power control. The threshold for uplink user-level power control is reached if the uplink receive quality is greater than or equal to the value of this parameter and the uplink receive level is greater than or equal to the value of "IBCAIIUserPCJudgULRxlevThr". The threshold for downlink user-level power control is reached if the downlink receive quality is greater than or equal to the value of this parameter and the downlink receive level is greater than or equal to the value of "IBCAIIUserPCJudgDLRxlevThr". "IBCAIIUserPCJudgDLRxlevThr". This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~70 Unit: None Actual Value Range: 0~70 Default Value: 65

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserPC JudgQu alThr

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II II

Meaning: Quality threshold for user-level power control. The threshold for uplink user-level power control is reached if the uplink receive quality is greater than or equal to the value of this parameter and the uplink receive level is greater than or equal to the value of "IBCAIIUserPCJudgULRxlevThr". The threshold for downlink user-level power control is reached if the downlink receive quality is greater than or equal to the value of this parameter and the downlink receive level is greater than or equal to the value of "IBCAIIUserPCJudgDLRxlevThr". "IBCAIIUserPCJudgDLRxlevThr". This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~70 Unit: None Actual Value Range: 0~70 Default Value: 65

IBCAII UserPC JudgUL RxlevT hr

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II II

Meaning: Level threshold for uplink user-level power control. If the uplink receive level is greater than or equal to the value of this parameter, parameter, the level threshold is reached. Furthermore, if the uplink receive quality is greater than or equal to the value of "IBCAIIUserPCJudgQualThr", the threshold for uplink user-level power control is reached. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 10

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserPC JudgUL RxlevT hr

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II II

Meaning: Level threshold for uplink user-level power control. If the uplink receive level is greater than or equal to the value of this parameter, parameter, the level threshold is reached. Furthermore, if the uplink receive quality is greater than or equal to the value of "IBCAIIUserPCJudgQualThr", the threshold for uplink user-level power control is reached. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 10

IBCAII UserPC JudgDL RxlevT hr

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II II

Meaning: Level threshold for downlink user-level power control. If the downlink receive level is greater than or equal to the value of this parameter, parameter, the level threshold is reached. Furthermore, if the downlink receive quality is greater than or equal to the value of "IBCAIIUserPCJudgQualThr", "IBCAIIUserPCJudgQualThr", the threshold for downlink user-level power control is reached. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 10

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserPC JudgDL RxlevT hr

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Level threshold for downlink user-level power control. If the downlink receive level is greater than or equal to the value of this parameter, the level threshold is reached. Furthermore, if the downlink receive quality is greater than or equal to the value of "IBCAIIUserPCJudgQualThr", the threshold for downlink user-level power control is reached. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 10

IBCAII UserPC MainInt fThr

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Threshold for controlling the power of the primary interference source. If the signal strength of the primary interference source minus the signal strength of the secondary interference source is greater than or equal to the value of this parameter, the power control of the primary interference source starts. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~31 Unit: dB Actual Value Range: 0~31 Default Value: 3

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserPC MainInt fThr

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Threshold for controlling the power of the primary interference source. If the signal strength of the primary interference source minus the signal strength of the secondary interference source is greater than or equal to the value of this parameter, the power control of the primary interference source starts. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~31 Unit: dB Actual Value Range: 0~31 Default Value: 3

IBCAII UserFin ePCSwi tch

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether to use the fine power control algorithm in the IBCA II user-level power control function. If this parameter is set to ON, the BSC uses the fine power control algorithm in the IBCA II user-level power control function. The details of the algorithm are as follows: For an interference source that meets the conditions for impending call drops, the BSC sends the starting frame of the interference source to the BTS, instructing the BTS to perform power control. If this parameter is set to OFF, the BSC does not use the fine power control algorithm. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserFin ePCSwi tch

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Whether to use the fine power control algorithm in the IBCA II user-level power control function. If this parameter is set to ON, the BSC uses the fine power control algorithm in the IBCA II user-level power control function. The details of the algorithm are as follows: For an interference source that meets the conditions for impending call drops, the BSC sends the starting frame of the interference source to the BTS, instructing the BTS to perform power control. If this parameter is set to OFF, the BSC does not use the fine power control algorithm. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

IBCAII UserPC DlQaTh rOffset

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter is used to adjust the downlink quality level threshold for non-PS interference sources during the power control of interference sources. The actual downlink quality level threshold equals the downlink quality level threshold for interference sources minus the value of this parameter This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~30 Unit: dB Actual Value Range: 0~30 Default Value: 4

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserPC DlQaTh rOffset

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter is used to adjust the downlink quality level threshold for non-PS interference sources during the power control of interference sources. The actual downlink quality level threshold equals the downlink quality level threshold for interference sources minus the value of this parameter This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~30 Unit: dB Actual Value Range: 0~30 Default Value: 4

DLHSR EXQU ALLO WTHR ED

BSC690 0

SET GCELL PWR3

GBFD-1 17601

HUAW EI III Power Control Algorith m

Meaning: Lower quality threshold for Huawei power control generation III on a half rate call. If the downlink receive quality level of a half rate call is smaller than this threshold, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 18

DLHSR EXQU ALLO WTHR ED

BSC691 0

SET GCELL PWR3

GBFD-1 17601


Meaning: Lower quality threshold for Huawei power control generation III on a half rate call. If the downlink receive quality level of a half rate call is smaller than this threshold, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 18

DLHSR EXQU ALHIG HTHR ED

BSC690 0

SET GCELL PWR3

GBFD-1 17601


Meaning: Upper quality threshold for Huawei power control generation III on a half rate call. If the downlink receive quality level of a half rate call is greater than this threshold, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 18

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7 Parameters

Parame ter ID

NE


Feature Name

Description

DLHSR EXQU ALHIG HTHR ED

BSC691 0

SET GCELL PWR3

GBFD-1 17601


Meaning: Upper quality threshold for Huawei power control generation III on a half rate call. If the downlink receive quality level of a half rate call is greater than this threshold, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 18

DLFSR EXQU ALLO WTHR ED

BSC690 0

SET GCELL PWR3

GBFD-1 17601


Meaning: Lower quality threshold for Huawei power control generation III on a full rate call. If the downlink receive quality level of a full rate call is smaller than this threshold, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 18

DLFSR EXQU ALLO WTHR ED

BSC691 0

SET GCELL PWR3

GBFD-1 17601


Meaning: Lower quality threshold for Huawei power control generation III on a full rate call. If the downlink receive quality level of a full rate call is smaller than this threshold, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 18

DLFSR EXQU ALHIG HTHR ED

BSC690 0

SET GCELL PWR3

GBFD-1 17601


Meaning: Upper quality threshold for Huawei power control generation III on a full rate call. If the downlink receive quality level of a full rate call is greater than this threshold, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 18

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7 Parameters

Parame ter ID

NE


Feature Name

Description

DLFSR EXQU ALHIG HTHR ED

BSC691 0

SET GCELL PWR3

GBFD-1 17601


Meaning: Upper quality threshold for Huawei power control generation III on a full rate call. If the downlink receive quality level of a full rate call is greater than this threshold, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 18

DLAHS REXQ UALLO WTHR ED

BSC690 0

SET GCELL PWR3

GBFD-1 17601


Meaning: If the downlink receive quality level of an AMR half rate call is smaller than this parameter, parameter, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 18

DLAHS REXQ UALLO WTHR ED

BSC691 0

SET GCELL PWR3

GBFD-1 17601


Meaning: If the downlink receive quality level of an AMR half rate call is smaller than this parameter, parameter, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 18

DLAHS REXQ UALHI GHTH RED

BSC690 0

SET GCELL PWR3

GBFD-1 17601


Meaning: If the downlink receive quality level of an AMR half rate call is greater than this parameter, parameter, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 18

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Parame ter ID

NE


Feature Name

Description

DLAHS REXQ UALHI GHTH RED

BSC691 0

SET GCELL PWR3

GBFD-1 17601


Meaning: If the downlink receive quality level of an AMR half rate call is greater than this parameter, parameter, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 18

DLAFS REXQ UALLO WTHR ED

BSC690 0

SET GCELL PWR3

GBFD-1 17601


Meaning: If the downlink receive quality level of an AMR full rate call is smaller than this parameter, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 16

DLAFS REXQ UALLO WTHR ED

BSC691 0

SET GCELL PWR3

GBFD-1 17601


Meaning: If the downlink receive quality level of an AMR full rate call is smaller than this parameter, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 16

DLAFS REXQ UALHI GHTH RED

BSC690 0

SET GCELL PWR3

GBFD-1 17601


Meaning: If the downlink receive quality level of an AMR full rate call is greater than this parameter, parameter, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 16

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7 Parameters

Parame ter ID

NE


Feature Name

Description

DLAFS REXQ UALHI GHTH RED

BSC691 0

SET GCELL PWR3

GBFD-1 17601


Meaning: If the downlink receive quality level of an AMR full rate call is greater than this parameter, parameter, the call needs to undergo Huawei power control generation III. GUI Value Range: 1~30 Unit: dB Actual Value Range: 1~30 Default Value: 16

AlphaQ pskHR RxQual Thd

BSC690 0

SET GCELL VAMO SPWR

GBFD-1 15830

VAMOS

Meaning: Meaning: Downlink Downlink receive receive quality quality thresho threshold ld of of the HR channels that are enabled with the Alpha-QPSK power control algorithm. When the downlink receive receive quality of a VAMOS HR call is lower than this threshold, the BTS power is reduced. When the downlink receive quality of a VAMOS HR call is higher than this threshold, the BTS power is boosted. When the downlink receive quality of a VAMOS HR call is equal to this threshold, the BTS power remains unchanged. Map the value of this parameter onto a CIR according to the mapping rule between receive quality ranks and CIRs when using it. GUI Value Range: 0~7 Unit: None Actual Value Range: 0~7 Default Value: 1

AlphaQ pskHR RxQual Thd

BSC691 0

SET GCELL VAMO SPWR

GBFD-1 15830

VAMOS

Meaning: Meaning: Downlink Downlink receive receive quality quality thresho threshold ld of of the HR channels that are enabled with the Alpha-QPSK power control algorithm. When the downlink receive receive quality of a VAMOS HR call is lower than this threshold, the BTS power is reduced. When the downlink receive quality of a VAMOS HR call is higher than this threshold, the BTS power is boosted. When the downlink receive quality of a VAMOS HR call is equal to this threshold, the BTS power remains unchanged. Map the value of this parameter onto a CIR according to the mapping rule between receive quality ranks and CIRs when using it. GUI Value Range: 0~7 Unit: None Actual Value Range: 0~7 Default Value: 1

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7 Parameters

Parame ter ID

NE


Feature Name

Description

AlphaQ pskAmr HRRxQ ualThd

BSC690 0

SET GCELL VAMO SPWR

GBFD-1 15830

VAMOS

Meaning: Downlink receive quality threshold of the AMR HR channels that are enabled with the AlphaQPSK power control algorithm. When the downlink receive quality of a VAMOS AMR HR call is lower than this threshold, the BTS power is reduced. When the downlink receive quality of a VAMOS AMR HR call is higher than this threshold, the BTS power is boosted. When the downlink receive quality of a VAMOS AMR HR call is equal to this threshold, the BTS power remains unchanged. Map the value of this parameter onto a CIR according to the mapping rule between receive quality ranks and CIRs when using it. GUI Value Range: 0~7 Unit: None Actual Value Range: 0~7 Default Value: 1

AlphaQ pskAmr HRRxQ ualThd

BSC691 0

SET GCELL VAMO SPWR

GBFD-1 15830

VAMOS

Meaning: Downlink receive quality threshold of the AMR HR channels that are enabled with the AlphaQPSK power control algorithm. When the downlink receive quality of a VAMOS AMR HR call is lower than this threshold, the BTS power is reduced. When the downlink receive quality of a VAMOS AMR HR call is higher than this threshold, the BTS power is boosted. When the downlink receive quality of a VAMOS AMR HR call is equal to this threshold, the BTS power remains unchanged. Map the value of this parameter onto a CIR according to the mapping rule between receive quality ranks and CIRs when using it. GUI Value Range: 0~7 Unit: None Actual Value Range: 0~7 Default Value: 1

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7 Parameters

Parame ter ID

NE


Feature Name

Description

FRAM EOFFS ET

BSC690 0

SET GCELL OTHE XT

MRFD210301


Meaning: Frame offset. The frame offset technology arranges the frame numbers of different cells under the same BTS to be different from one another by one frame offset. Thus, the FCH and SCH signals of neighboring cells do not appear in the same frame, which is helpful for the coding of an MS. If the value of this parameter is 0, the cell is not offset. If the value is 255, this parameter is not sent. If the parameter is set to a value except for 0 and 255, the handover of the cell must be changed from the synchronous mode to the asynchronous mode. For BTS3001C, BTS3X, BTS3002C and double-transceiver BTSs, the frame offset can be predicted according to the value of this parameter. GUI Value Range: 0~255 Unit: None Actual Value Range: 0~255 Default Value: 0

FRAM EOFFS ET

BSC691 0

SET GCELL OTHE XT

MRFD210301


Meaning: Frame offset. The frame offset technology arranges the frame numbers of different cells under the same BTS to be different from one another by one frame offset. Thus, the FCH and SCH signals of neighboring cells do not appear in the same frame, which is helpful for the coding of an MS. If the value of this parameter is 0, the cell is not offset. If the value is 255, this parameter is not sent. If the parameter is set to a value except for 0 and 255, the handover of the cell must be changed from the synchronous mode to the asynchronous mode. For double-transceiver BTSs, the frame offset can be predicted according to the value of this parameter. GUI Value Range: 0~255 Unit: None Actual Value Range: 0~255 Default Value: 0

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserPC Timer

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Duration for power control of the primary interference source. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~50 Unit: 480ms Actual Value Range: 0~24000 Default Value: 10

IBCAII UserPC Timer

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Duration for power control of the primary interference source. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~50 Unit: 480ms Actual Value Range: 0~24000 Default Value: 10

IBCAII UserPC UlQaTh rOffset

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter is used to adjust the uplink quality level threshold for non-PS interference sources during the power control of interference sources. The actual uplink quality level threshold equals the uplink quality level threshold for interference sources minus the value of this parameter. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~30 Unit: dB Actual Value Range: 0~30 Default Value: 4

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserPC UlQaTh rOffset

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter is used to adjust the uplink quality level threshold for non-PS interference sources during the power control of interference sources. The actual uplink quality level threshold equals the uplink quality level threshold for interference sources minus the value of this parameter. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~30 Unit: dB Actual Value Range: 0~30 Default Value: 4

IBCAII UserPC UlLevT hrOffse t

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter is used to adjust the uplink signal level threshold for non-PS interference sources during the power control of interference sources. The actual uplink signal level threshold equals the uplink signal level threshold for interference sources minus the value of this parameter This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 4

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserPC UlLevT hrOffse t

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter is used to adjust the uplink signal level threshold for non-PS interference sources during the power control of interference sources. The actual uplink signal level threshold equals the uplink signal level threshold for interference sources minus the value of this parameter This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 4

IBCAII UserPC DlLevT hrOffse t

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter is used to adjust the downlink signal level threshold for non-PS interference sources during the power control of interference sources. The actual downlink signal level threshold equals the downlink signal level threshold for interference sources minus the value of this parameter This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 4

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAII UserPC DlLevT hrOffse t

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: This parameter is used to adjust the downlink signal level threshold for non-PS interference sources during the power control of interference sources. The actual downlink signal level threshold equals the downlink signal level threshold for interference sources minus the value of this parameter This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 4

IBCAII PdchDl PwOffs et

BSC690 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Increase in the existing downlink power control degree on PDCHs.For details about the existing PS power control policy and related power control parameters, see the description of the "SET GCELLPSPWPARA" command. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~31 Unit: dB Actual Value Range: 0~31 Default Value: 3

IBCAII PdchDl PwOffs et

BSC691 0

SET GCELL IBCAII

GBFD-1 19511

IBCA II

Meaning: Increase in the existing downlink power control degree on PDCHs.For details about the existing PS power control policy and related power control parameters, see the description of the "SET GCELLPSPWPARA" command. This parameter is an advanced parameter. To modify this parameter, contact Huawei Customer Service Center. GUI Value Range: 0~31 Unit: dB Actual Value Range: 0~31 Default Value: 3

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAI NITPC RXLEV ULOFF SET

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Adds a specified offset to the uplink target receive level when power control algorithm III is used to calculate the initial transmit power of an MS in the IBCA function. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 3

IBCAI NITPC RXLEV ULOFF SET

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Adds a specified offset to the uplink target receive level when power control algorithm III is used to calculate the initial transmit power of an MS in the IBCA function. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 3

IBCAI NITPC RXLEV DLOFF SET

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Adds a specified offset to the downlink target receive level when power control algorithm III is used to calculate the initial transmit power of a BTS in the IBCA function. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 3

IBCAI NITPC RXLEV DLOFF SET

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Adds a specified offset to the downlink target receive level when power control algorithm III is used to calculate the initial transmit power of a BTS in the IBCA function. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 3

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAI NITPC RXQU ALULO FFSET

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Adds a specified offset to the uplink target receive quality when power control algorithm III is used to calculate the initial transmit power of an MS in the IBCA function. GUI Value Range: 0~22 Unit: dB Actual Value Range: 0~22 Default Value: 6

IBCAI NITPC RXQU ALULO FFSET

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Adds a specified offset to the uplink target receive quality when power control algorithm III is used to calculate the initial transmit power of an MS in the IBCA function. GUI Value Range: 0~22 Unit: dB Actual Value Range: 0~22 Default Value: 6

IBCAI NITPC RXQU ALDLO FFSET

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Adds a specified offset to the downlink target receive quality when power control algorithm III is used to calculate the initial transmit power of a BTS in the IBCA function. GUI Value Range: 0~22 Unit: dB Actual Value Range: 0~22 Default Value: 6

IBCAI NITPC RXQU ALDLO FFSET

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Adds a specified offset to the downlink target receive quality when power control algorithm III is used to calculate the initial transmit power of a BTS in the IBCA function. GUI Value Range: 0~22 Unit: dB Actual Value Range: 0~22 Default Value: 6

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAU SEDIU OSUBL AY

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: This parameter specifies whether the IBCA algorithm is allowed in the overlaid subcell and underlaid subcell. Disabled in OL and UL Subcells indicates that the IBCA algorithm is not allowed in either the overlaid subcell or the underlaid subcell; Enabled in UL Subcell indicates that the IBCA algorithm is allowed in the underlaid subcell but not allowed in the overlaid subcell; Enabled in OL Subcell indicates that the IBCA algorithm is allowed in the overlaid subcell but not in the underlaid subcell; Enabled in OL and UL Subcells indicates that the IBCA algorithm is allowed in both overlaid and underlaid subcells. GUI Value Range: NO(Disabled in OL and UL subcell), UNDER(Enabled in UL subcell), INNER( Enabled in OL subcell), YES(Enabled in OL and UL subcell) Unit: None Actual Value Range: NO, UNDER, INNER, YES Default Value: UNDER(Enabled in UL subcell)

IBCAU SEDIU OSUBL AY

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: This parameter specifies whether the IBCA algorithm is allowed in the overlaid subcell and underlaid subcell. Disabled in OL and UL Subcells indicates that the IBCA algorithm is not allowed in either the overlaid subcell or the underlaid subcell; Enabled in UL Subcell indicates that the IBCA algorithm is allowed in the underlaid subcell but not allowed in the overlaid subcell; Enabled in OL Subcell indicates that the IBCA algorithm is allowed in the overlaid subcell but not in the underlaid subcell; Enabled in OL and UL Subcells indicates that the IBCA algorithm is allowed in both overlaid and underlaid subcells. GUI Value Range: NO(Disabled in OL and UL subcell), UNDER(Enabled in UL subcell), INNER( Enabled in OL subcell), YES(Enabled in OL and UL subcell) Unit: None Actual Value Range: NO, UNDER, INNER, YES Default Value: UNDER(Enabled in UL subcell)

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7 Parameters

Parame ter ID

NE


Feature Name

Description

IBCAI UOPAT HLOSS OFF

BSC690 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: In a concentric cell (including a CoBCCH cell), this parameter is used together with the path loss of an MS to the serving cell or a neighboring cell measured on the underlaid subcell to estimate the path loss on the overlaid subcell. IUO path loss compensation = Combiner insert loss difference + Path loss difference due to the use of different antennas + Path loss difference due to different frequency selectivity. The value of this parameter is calculated based on the IUO level values measured by field engineers. If different antennas are used in the overlaid and underlaid subcells, the level must be measured at multiple locations. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 4

IBCAI UOPAT HLOSS OFF

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: In a concentric cell (including a CoBCCH cell), this parameter is used together with the path loss of an MS to the serving cell or a neighboring cell measured on the underlaid subcell to estimate the path loss on the overlaid subcell. IUO path loss compensation = Combiner insert loss difference + Path loss difference due to the use of different antennas + Path loss difference due to different frequency selectivity. The value of this parameter is calculated based on the IUO level values measured by field engineers. If different antennas are used in the overlaid and underlaid subcells, the level must be measured at multiple locations. GUI Value Range: 0~63 Unit: dB Actual Value Range: 0~63 Default Value: 4

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115


Parame ter ID

NE


DTMO ptiSwitc h

BSC690 0

SET GCELL GPRS

GBFD-1 14151

7 Parameters

Feature Name

Description

DTM

Meaning: Whether to enable the DTM performance optimization. After this function is enabled, the BSC can allocate PS resources for DTM services over idle PDCHs. At that time, the BSC triggers the PDCH conversion first and then allocates PS resources. This function provides the following enhancements: PDCH resource protection after the DTM mode is disabled DTM resource allocation policy selection DTM resource allocation optimization in the concentric cell scenario Policy GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

DTMO ptiSwitc h

BSC691 0

SET GCELL GPRS

GBFD-1 14151

DTM

Meaning: Whether to enable the DTM performance optimization. After this function is enabled, the BSC can allocate PS resources for DTM services over idle PDCHs. At that time, the BSC triggers the PDCH conversion first and then allocates PS resources. This function provides the following enhancements: PDCH resource protection after the DTM mode is disabled DTM resource allocation policy selection DTM resource allocation optimization in the concentric cell scenario Policy GUI Value Range: OFF(Off), ON(On) Unit: None Actual Value Range: OFF, ON Default Value: OFF(Off)

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116


7 Parameters

Parame ter ID

NE


Feature Name

Description

TRXM AIO

BSC690 0

SET GTRX CHAN HOP

GBFD-1 13701

Frequen cy Hopping (RF hopping, baseban d hopping )

Meaning: Mobile allocation index offset (MAIO) of the channel in the TRX

Frequen cy Hopping (RF hopping, baseban d hopping )

Meaning: Mobile allocation index offset (MAIO) of the channel in the TRX


Meaning: Minimum CIR for SAIC-capable MSs. This variable indicates the downward adjustment step of the soft block threshold for SAIC-capable MSs.

TRXM AIO

IBCAS OFTBL KSAIC OFF

BSC691 0

BSC690 0

SET GTRX CHAN HOP

SET GCELL CHMG AD

GBFD-1 13701

GBFD-1 17002

GUI Value Range: 0~63 Unit: None Actual Value Range: 0~63 Default Value: 0

GUI Value Range: 0~63 Unit: None Actual Value Range: 0~63 Default Value: 0

GUI Value Range: 0~23 Unit: dB Actual Value Range: 0~23 Default Value: 1

IBCAS OFTBL KSAIC OFF

BSC691 0

SET GCELL CHMG AD

GBFD-1 17002


Meaning: Minimum CIR for SAIC-capable MSs. This variable indicates the downward adjustment step of the soft block threshold for SAIC-capable MSs. GUI Value Range: 0~23 Unit: dB Actual Value Range: 0~23 Default Value: 1

FRAM EBITO FFSET

BSC690 0

SET BTSCL K

GBFD-5 10401

BTS GPS Synchro nization

Meaning: Bit offset in the frame of the BTS clock. GUI Value Range: -80~80 Unit: 0.125bit Actual Value Range: -10~10 Default Value: 0

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117


7 Parameters

Parame ter ID

NE


Feature Name

Description

FRAM EBITO FFSET

BSC691 0

SET BTSCL K

GBFD-5 10401

BTS GPS Synchro nization

Meaning: Bit offset in the frame of the BTS clock. GUI Value Range: -80~80 Unit: 0.125bit Actual Value Range: -10~10 Default Value: 0

ULREX QUAL ADJFC TR

BSC690 0

ULREX QUAL ADJFC TR

BSC691 0

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SET GCELL PWR3

GBFD-1 17002

SET GCELL PWR3

GBFD-1 17002

GBFD-1 17601

GBFD-1 17601

IBCA Meaning: (Interfer This parameter specifies the uplink quality level factor ence multiplied by 10 during the calculation of the uplink Based power control step. Channel Allocati The uplink quality level factor is a coefficient indicating how much the quality level is considered on) during the calculation of the uplink power control HUAW step. EI III GUI Value Range: 0~10 Power Unit: None Control Algorith Actual Value Range: 0~10 m Default Value: 4 IBCA Meaning: (Interfer This parameter specifies the uplink quality level factor ence multiplied by 10 during the calculation of the uplink Based power control step. Channel Allocati The uplink quality level factor is a coefficient indicating how much the quality level is considered on) during the calculation of the uplink power control HUAW step. EI III GUI Value Range: 0~10 Power Unit: None Control Algorith Actual Value Range: 0~10 m Default Value: 4


118


7 Parameters

Parame ter ID

NE


Feature Name

Description

DLREX QUAL ADJFC TR

BSC690 0

SET GCELL PWR3

GBFD-1 17002


Meaning:

GBFD-1 17601

HUAW EI III Power Control Algorith m DLREX QUAL ADJFC TR

BSC691 0

SET GCELL PWR3

GBFD-1 17002 GBFD-1 17601

IBCA (Interfer ence Based Channel Allocati on) HUAW EI III Power Control Algorith m

TCHBU SYTHR ES

BSC690 0

SET None GCELL CHMG AD

None

This parameter specifies the downlink quality level factor multiplied by 10 during the calculation of the downlink power control step. The downlink quality level factor is a coefficient indicating how much the quality level is considered during the calculation of the downlink power control step. GUI Value Range: 0~10 Unit: None Actual Value Range: 0~10 Default Value: 4 Meaning: This parameter specifies the downlink quality level factor multiplied by 10 during the calculation of the downlink power control step. The downlink quality level factor is a coefficient indicating how much the quality level is considered during the calculation of the downlink power control step. GUI Value Range: 0~10 Unit: None Actual Value Range: 0~10 Default Value: 4 Meaning: If the current channel seizure ratio reaches or exceeds this value, the half-rate TCH is assigned preferentially; otherwise, the full-rate TCH is assigned preferentially. GUI Value Range: 0~100 Unit: % Actual Value Range: 0~100 Default Value: 60

TCHBU SYTHR ES

BSC691 0

None SET GCELL CHMG AD

None

Meaning: If the current channel seizure ratio reaches or exceeds this value, the half-rate TCH is assigned preferentially; otherwise, the full-rate TCH is assigned preferentially. GUI Value Range: 0~100 Unit: % Actual Value Range: 0~100 Default Value: 60

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8 Counters

8

Counters

Table 8-1 Counters

Counter ID

Counter Name

Counter Description

NE

Feature ID

Feature Name

1282434898

IBCA2.INTER F.SEACH.NU M.UPLINK

R3686A:Numbe r of Interference Source Searches for IBCA II User Power Control (Uplink)

BSC6900

GBFD-119511

IBCA II (Interference Based Channel Allocation II)

1282434898

IBCA2.INTER F.SEACH.NU M.UPLINK

R3686A:Numbe r of Interference Source Searches for IBCA II User Power Control (Uplink)

BSC6910

GBFD-119511


1282434899

IBCA2.INTER F.SEACH.NU M.DOWNLIN K

R3686B:Numbe r of Interference Source Searches for IBCA II User Power Control (Downlink)

BSC6900

GBFD-119511


1282434899

IBCA2.INTER F.SEACH.NU M.DOWNLIN K

R3686B:Numbe r of Interference Source Searches for IBCA II User Power Control (Downlink)

BSC6910

GBFD-119511


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120


Counter ID

8 Counters

Counter Name

Counter Description

NE

Feature ID

Feature Name

1282434900

IBCA2.INTER F.CS.POWCT RL.EFFECT.N UM.UPLINK

R3686C:Numbe r of Times IBCA II User Power Control with CS Interference Source Takes Effect (Uplink)

BSC6900

GBFD-119511


1282434900

IBCA2.INTER F.CS.POWCT RL.EFFECT.N UM.UPLINK

R3686C:Numbe r of Times IBCA II User Power Control with CS Interference Source Takes Effect (Uplink)

BSC6910

GBFD-119511


1282434901

IBCA2.INTER F.CS.POWCT RL.EFFECT.N UM.DOWNLI NK

R3686D:Numbe r of Times IBCA II User Power Control with CS Interference Source Takes Effect (Downlink)

BSC6900

GBFD-119511


1282434901

IBCA2.INTER F.CS.POWCT RL.EFFECT.N UM.DOWNLI NK

R3686D:Numbe r of Times IBCA II User Power Control with CS Interference Source Takes Effect (Downlink)

BSC6910

GBFD-119511


1282434902

IBCA2.INTER F.PS.POWCT RL.EFFECT.N UM.DOWNLI NK

R3686E:Numbe r of Times IBCA II User Power Control with PS Interference Source Takes Effect (Downlink)

BSC6900

GBFD-119511


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Counter ID

8 Counters

Counter Name

Counter Description

NE

Feature ID

Feature Name

1282434902

IBCA2.INTER F.PS.POWCT RL.EFFECT.N UM.DOWNLI NK

R3686E:Numbe r of Times IBCA II User Power Control with PS Interference Source Takes Effect (Downlink)

BSC6910

GBFD-119511


1282434903

IBCA2.INTER F.VAMOS.PO WCTRL.EFFE CT.NUM.UPLI NK

R3686F:Numbe r of Times IBCA II User Power Control with VAMOS Interference Source Takes Effect (Uplink)

BSC6900

GBFD-119511


1282434903

IBCA2.INTER F.VAMOS.PO WCTRL.EFFE CT.NUM.UPLI NK

R3686F:Numbe r of Times IBCA II User Power Control with VAMOS Interference Source Takes Effect (Uplink)

BSC6910

GBFD-119511


1282434904

IBCA2.INTER F.VAMOS.PO WCTRL.EFFE CT.NUM.DO WNLINK

R3686G:Numbe r of Times IBCA II User Power Control with VAMOS Interference Source Takes Effect (Downlink)

BSC6900

GBFD-119511


1282434904

IBCA2.INTER F.VAMOS.PO WCTRL.EFFE CT.NUM.DO WNLINK

R3686G:Numbe r of Times IBCA II User Power Control with VAMOS Interference Source Takes Effect (Downlink)

BSC6910

GBFD-119511


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Counter ID 1282434922

1282434922

1282434923

1282434923

8 Counters

Counter Name

Counter Description

NE

Feature ID

Feature Name

IBCA.TRXIN TER.ASSESS. TCH.REQ.SU CC.NUM

R3142E:Numbe r of Successful IBCA TRX Interference Assessments During TCH Request

BSC6900

GBFD-117002

IBCA (Interference Based Channel Allocation)

R3142E:Numbe r of Successful IBCA TRX Interference Assessments During TCH Request

BSC6910

R3142F:Numbe r of IBCA TRX Allocations During TCH Request

BSC6900

R3142F:Numbe r of IBCA TRX Allocations During TCH Request

BSC6910

IBCA.TRXIN TER.ASSESS. TCH.REQ.SU CC.NUM

IBCA.TRXIN TER.ASSESS. TCH.REQ.AL LOC.NUM

IBCA.TRXIN TER.ASSESS. TCH.REQ.AL LOC.NUM

Issue 02 (2016-08-31)

GBFD-119511

IBCA II (Interference Based Channel Allocation II) GBFD-117002 GBFD-119511

IBCA (Interference Based Channel Allocation) IBCA II (Interference Based Channel Allocation II)

GBFD-117002 GBFD-119511


GBFD-117002 GBFD-119511



123


9 Glossary

9

Glossary

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

Issue 02 (2016-08-31)


124

IBCA II(GBSS18.1_02)

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