Zte Lte Fdd Anr Feature Guide v1 0

ZTE LTE FDD ANR Feature Guide V1.0

ZTE LTE FDD ANR Feature Guide

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ZTE Confidential Proprietary

© 2013 ZTE CORPORATION. All rights reserved.

I


ZTE LTE FDD Congestion Control Feature Guide Version V1.0

Date 2013-7-14

Author Sun Wei Zhang Chengsong


Reviewer Li Nana

Notes Not open to the third party


II


TABLE OF CONTENTS 1

2

INTRODUCTION ............................................................................................................... 1 1.1

SCOPE..................................................................................................................... 1

1.2

TARGET GROUP .................................................................................................... 1

1.3 1.4

FEATURE ATTRIBUTE ........................................................................................... 1 CORRELATION WITH OTHER FEATURE ............................................................. 1

TERMINOLOGY ................................................................................................................ 2 2.1

3

SPECIFICATION NOTATIONS ............................................................................... 2

TECHNICAL DESCRIPTIONS .......................................................................................... 3 3.1

FEATURE DESCRIPTIONS .................................................................................... 3

3.1.1 3.1.2

3.2

TECHNICAL DETAILS............................................................................................. 6

3.2.1 3.2.2 3.2.3 3.2.4 3.2.5 3.2.6 3.2.7 3.2.8

4

6

Intra-LTE ANR Addition ............................................................................................10 Intra-LTE ANR Deletion ............................................................................................14 Inter-RAT ANR Addition to GSM ..............................................................................16 Inter-RAT ANR Deletion to GSM ..............................................................................20 Inter-RAT ANR Addition to UTRAN ..........................................................................22 Inter-RAT ANR Deletion to UTRAN ..........................................................................26 Intra-LTE ANR Based on Bidirectional Configuration Switch ...................................28 Modifying the NOHO Attribute of a Neighbor cell .....................................................30

KEY PARAMETERS AND CONFIGURATION............................................................... 32 4.1

PARAMETERS LIST .............................................................................................. 32

4.2

PARAMETERS CONFIGURATION RULE ............................................................ 33

4.3

PARAMETER CONFIGURATION PROCEDURE ................................................. 38

4.3.1 4.3.2 4.3.3 4.3.4

5

Intra-LTE ANR Principles ...........................................................................................4 Inter-RAT ANR Principles ...........................................................................................5

Releasing Mutex Right .............................................................................................38 Enabling the ANR Function ......................................................................................39 The Other Related Parameters Configuring ............................................................. 47 Disabling the ANR Function .....................................................................................53

RELATED COUNTERS, KPI, AND ALARMS ................................................................ 54 5.1

RELATED COUNTERS ......................................................................................... 54

5.2

RELATED KPI ........................................................................................................ 58

5.3

RELATED ALARMS ............................................................................................... 58

ABBREVIATIONS ........................................................................................................... 58



III


FIGURES Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure

3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-11 4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-8 4-9 4-10 4-11 4-12 4-13 4-14 4-15 4-16 4-17 4-18 4-19 4-20 4-21 4-22 4-23 4-24 4-25

ANR and its running environment .................................................................................3 Intra-LTE ANR Principles ..............................................................................................4 Inter-RAT ANR Principles ..............................................................................................5 Intra-LTE ANR Addition ...............................................................................................11 Intra-LTE ANR Deletion ...............................................................................................15 inter-RAT ANR Addition to GSM .................................................................................17 inter-RAT ANR Deletion TO GSM ...............................................................................20 inter-RAT ANR Addition to UTRAN .............................................................................23 inter-RAT ANR Deletion to UTRAN .............................................................................26 Intra-LTE ANR based on bidirectional configuration switch ......................................28 Modifying the NOHO Attribute of a Neighboring cell .................................................31 Release Mutex Right................................................................................................39 Release Mutex Right Successfully ..............................................................................39 MO SDR SON Configuration Application ....................................................................40 SON Management Tree ..............................................................................................40 FDD SON Control ........................................................................................................41 ANR Enable Switch .....................................................................................................41 Select ANR Enable Record .........................................................................................42 Relating ANR with the eNodeB ...................................................................................42 ANR Enable Switch Sent Successfully........................................................................43 FDD ANR Policy Page...............................................................................................43 FDD ANR Policy ........................................................................................................44 SON Refer Point Attribute Table ...............................................................................45 SON ANR Policy Record ...........................................................................................45 Relating the ANR Policy to the eNodeBs ..................................................................46 Relating the ANR Policy to Cells ...............................................................................46 ANR Policy Sent Successfully ...................................................................................47 Measurement Parameter ...........................................................................................47 Inter-Frequency Measurement Configuration ...........................................................48 GERAN-Frequency Measurement Configuration ......................................................49 UTRAN-Frequency Measurement Configuration ......................................................50 E-UTRAN FDD Cell-List Tab .....................................................................................51 E-UTRAN FDD Cell Tab ............................................................................................51 Data Synchronization Dialog Box ..............................................................................52 Closing the SON Switch ............................................................................................53 Closing the ANR Enable Switch ................................................................................54

TABLES Table 4-1 Parameters list ..............................................................................................................32 Table 4-2 The rule of parameters configuration ..............................................................................33 Table 5-1 Related Counters ..........................................................................................................54



IV


1 Introduction 1.1 Scope This document describes Automatic Neighbor Relation (ANR) feature or technology within the eNodeB in LTE network. The main contents comprise the following: technical description, key parameters and configuration, related counters, KPI statistics and alarms.

1.2 Target Group This document is intended for: 



Engineering personnel and technicians Maintenance engineers

1.3 Feature Attribute GUL: V4.12.10.15P40 EMS: U31 V12.12.43P02 OMMB: V12.12.40P26 eNodeB: V3.10.20P02

Involved NEs: UE

√

eNodeB

√

MME -√

S-GW -

BSC/RNC -

SGSN -

P-GW -

Note: *-: Not involved

*√: involved

1.4 Correlation with Other Feature No ZTE Confidential Proprietary


1

HSS


2 Terminology 2.1

Specification Notations 

Procedure When referring to an elementary procedure in the specification the Procedure Name is written with the first letters in each word in upper case

characters followed by the word “procedure”, e.g., Random Access procedure. 

Message When referring to a message in the specification the MESSAGE NAME is written with all letters in upper case characters followed by the word

“message”, e.g., The MME initiates the procedure by sending an E -RAB SETUP REQUEST message to the eNodeB.



Parameter

When referring to a parameter in the specification the parameter is written in Italic font, e.g., Band indicator of target ARFCN should be configured by byEUTRANFDDTarBand for LTE. 

IE When referring to an information element (IE) in the specification the Information Element Name is written with the first letters in each word in upper case characters and all letters in Italic font followed by the

abbreviation “IE”, e.g., Information Element IE. 

Value of an IE When referring to the value of an information element (IE) in the

specification the “Value” is written as it is specified enclosed by quotation marks, e.g., This IE shall be present if the Handover Type IE is set to the

value “LTEtoGERAN” and the SRVCC HO Indication IE is present.



2


3 Technical Descriptions 3.1

Feature Descriptions The Automatic Neighbor Relation (ANR) function helps operators to reduce the workload spent in manually configuring neighbor relations. Figure 3-1 shows ANR and its running environment.

Figure 3-1

ANR and its running environment

O&M

tr o p e r R N

s n o ti la e rR o b h g i e N e t a d p U / d d A

Internal Iinformation

NeighborRelationTable NeighbourRelation

NR

TCI

1

TCl#1

2

TCI#1

3

TCI#1

O&Mcontrolled NeighbourRelationAttributes No Remove

NRremove NoHO

NoX2

NRupdate

NRT Managemnt Function

NRadd

ANRfunction

Neighbour Removal Function

Neighbour Detection Function

Mrmnt reports

Mrmnt requests

RRC

eNB

ANR is a function of the eNodeB, including the ANR detection function and the ANR deletion function. The ANR function is used to manage the Neighbor Relation Table (NRT). The ANR detection function automatically detects new neighbor relations and adds them to the NRT. The ANR deletion function removes neighbor relations that match deletion criteria ZTE Confidential Proprietary


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ZTE LTE FDD ANR Feature Guide from the NRT.

3.1.1 Intra-LTE ANR Principles The intra-LTE ANR function is implemented because cells broadcasts their ECGIs in networks, see Figure 3-2.

Figure 3-2

Intra-LTE ANR Principles

Cell A Phy-CID=3 Global-CID =17

Cell B Phy-CID=5 Global-CID =19

1) report(Phy-CID=5, strong signal)

3) Report Global-CID=19 2b) Read BCCH()

2) Report Global-CID Request (Target PhyCID=5)

The following describes how the ANR function works in the LTE system: 1> UE measures a neighboring intra-LTE cell according to the measurement configuration sent by the eNodeB and then reports the measurement report. The measurement report contains the PCI (not the ECGI) of the neighboring cell (such as Cell B). 2> The eNodeB orders the UE to read the ECGI, TAC, and all available PLMN IDs of the neighboring cell (such as Cell B) with the detected PCI. To do this, the eNodeB selects a suitable UE for ECGI detection. 3> When UE gets the ECGI of the neighboring cell (such as Cell B), UE reports the ECGI, TAC, and PLMN IDs to the eNodeB. The eNodeB adds the newly detected neighboring cell as a temporary neighbor (that is, the neighboring cell only exists in the eNodeB, but it does not exist in the configuration database of O&M) based on the detection ZTE Confidential Proprietary


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ZTE LTE FDD ANR Feature Guide results of UE, and starts the statistics timer. Count the number of measurement reports of the temporary neighboring cell and handover successfully between the serving cell and the temporary neighboring cell. If the

two

values

reach

sonNbrReportThreshold

the

configured

thresholds,

namely

and sonHoSuccThreshold. The eNodeB then

requests O&M to add the temporary neighboring cell as a formal neighboring cell (that is, information of the neighbor exists not only in the eNodeB, but also in O&M). O&M adds the neighboring cell addition configuration and synchronize the addition configuration to the eNodeB.

3.1.2 Inter-RAT ANR Principles Figure 3-3 shows how inter-RAT( inter Radio Access Technology ) ANR works.

Figure 3-3

Inter-RAT ANR Principles

Cell A

Cell B

Type = LTE Phy-CID= 3 Global-CID =17

Type = UTRAN Phy-CID=PSC=5 Global-CID =19 2) Report Neighbour Response (Phy-CID, Signal level)

1) Report Neighbour Request (RAT, Frequency)

3b) Read BCCH (…)

3) Report Global-CID Request (Target Phy-CID=5)

4) Report Global-CID=19

For the ANR function between different radio access networks, a frequency list for other systems is configured on the eNodeB. The following describes how the inter-RAT ANR function works.



5

ZTE LTE FDD ANR Feature Guide 1> One of the eNodeB’s serving cell, Cell A for example, has the ANR function. The eNodeB selects a UE (or multiple UEs) in Cell A that has inter-RAT measurement capability. 2> UE reports PCI of the neighboring cell on the associated set of frequencies and RAT to the eNodeB. For UTRAN cells, the PCI consists of the carrier frequency and the Primary Scrambling Code (PSC). For GSM cells, PCI consists of BCC, NCC, and BCCH ARFCN. 3> The eNodeB orders UE to use the detected PCI to read the related information on neighboring cells in different systems. For UTRAN cells, the information that UE needs to read includes CGI, LAC, and RAC. For GSM cells, the information that UE needs to read includes CGI and LAC. 4> When UE gets the information for the neighboring cell, it sends the detected CGI, LAC, and RAC (for UTRAN cells) to the eNodeB. The eNodeB adds the newly detected neighboring cell as a temporary neighboring cell (that is, the neighboring cell only exists in the eNodeB, but it does not exist in the configuration database of O&M) based on the detection results of UE, and starts the statistics timer. Count the number of measurement reports of the temporary neighboring cell and handover successfully between the serving cell and the temporary neighboring cell. If the

two

values

reach

sonNbrReportThreshold

the

configured

thresholds,

namely

and sonHoSuccThreshold. The eNodeB then

requests O&M to add the temporary neighboring cell as a formal neighboring cell (that is, information of the neighbor exists not only in the eNodeB, but also in O&M). O&M adds the neighboring cell addition configuration and synchronize the addition configuration to the eNodeB.

3.2

Technical Details To describe the operating flow of the ANR function, it is required to introduce the related reference point used by ANR function. In this document, Ri (i=0, 1, 2, …) is used to indicate a foreground reference point and BRi (i=0,

1, 2, …) is used to indicate a background reference point. The reference points used by the ANR function are as follows: ZTE Confidential Proprietary


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ZTE LTE FDD ANR Feature Guide 1> R0: Detect an unknown PCI of the E-UTRAN system Triggering condition: It is used in the intra-LTE ANR function. After the eNodeB receives a measurement report from UE that contains an unknown PCI, the eNodeB reports this reference point to OMC. 2> R1: Select a UE to measure the ECGI of E-UTRAN neighbor cells Triggering condition: It is used in the intra-LTE ANR function. After the eNodeB selects a UE for ECGI measurement, the eNodeB reports this reference point to OMC. 3> R2: Receive the ECGI measurement result of an E-UTRAN

neighbor cell Triggering condition: It is used in the intra-LTE ANR function. After the eNodeB receives the ECGI measurement result reported by the UE, the eNodeB reports this reference point to OMC. 4> R3: Request to add E-UTRAN adjacent relation Triggering condition: It is used in the intra-LTE ANR function. After the statistical period ends, if the neighboring cell meets the condition which is used to add neighbor cell, the eNodeB reports the statistical result of the temporary neighboring cell to OMC and requests to add the E-UTRAN neighboring cell. 5> R4: Request to remove E-UTRAN adjacent relation Triggering condition: It is used in the intra-LTE ANR function. After the neighbor auto deletion statistics ends, the eNodeB reports the neighboring cells meeting the auto deletion criteria to OMC and requests to delete the neighboring cells. 6> R6: Request to add E-UTRAN Adjacent relation based on

bidirectional Configuration Switch Triggering condition: It is used in the intra-LTE ANR function, the eNodeB discovers a new E-UTRAN neighboring cell to add based on Intra-LTE Neighboring cell Relation Bidirectional Configuration Switch is enabled and X2 self-setup function. 7> R7: Request to add E-UTRAN adjacent relation based on X2

detection



7

ZTE LTE FDD ANR Feature Guide Triggering condition: In the intra-LTE ANR function, when the Intra-LTE Neighboring cell Relation Bidirectional Configuration Switch is not enabled, if the eNodeB discovers a new E-UTRAN neighboring cell based on X2 detection, it adds the neighboring cell as a temporary neighboring cell and starts the statistic timer. Count the number of the measurement reports of temporary neighboring cell and handover successfully between the serving cell and the temporary neighboring cell. When the statistic timer is timeout, the eNodeB reports this reference point to OMC and requests to add the E-UTRAN neighboring cell. 8> R8: Detect an unknown PCI of the GSM system Triggering condition: It is used in the ANR function between the LTE system and the GSM system. After the eNodeB receives a measurement report from the UE that contains an unknown PCI, the eNodeB reports this reference point to OMC. 9> R9: Select a UE to measure the CGI of GSM neighbor cells Triggering condition: It is used in the ANR function between the LTE system and the GSM system. After the eNodeB selects a UE for CGI measurement of GSM neighboring cells, the eNodeB reports this reference point to OMC. 10> R10: Receive CGI measurement of GSM adjacent cell Triggering condition: It is used in the ANR function between the LTE system and the GSM system. After the eNodeB receives the CGI measurement result of a GSM neighboring cell reported by the UE, the eNodeB reports this reference point to OMC. 11> R11: Request to add GSM adjacent relation Triggering condition: It is used in the ANR function between the LTE system and the GSM system. After the statistical period ends, if the neighboring cell meets the condition which is used to add GSM neighboring cell, the eNodeB reports the statistical result of the temporary neighboring cell to OMC and requests to add the GSM neighboring cell. 12> R12: Request to remove GSM adjacent relation Triggering condition: It is used in the ANR function between the LTE system and the GSM system. After the neighbor auto deletion statistics ends, the eNodeB reports the neighboring cells meeting the auto deletion criteria to OMC and requests to delete the GSM neighboring cells. ZTE Confidential Proprietary


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ZTE LTE FDD ANR Feature Guide 13> R13: Detect an unknown PSC of the UTRAN system Triggering condition: It is used in the ANR function between the LTE system and the UTRAN system. After the eNodeB receives a detection report from UE that contains an unknown PSC, the eNodeB reports this reference point to OMC. 14> R14: Select a UE to measure the CGI of UTRAN neighbor cells Triggering condition: It is used in the ANR function between the LTE system and the UTRAN system. After the eNodeB selects a UE for CGI measurement of UTRAN neighboring cells, the eNodeB reports this reference point to OMC. 15> R15: Receive CGI measurement result of UTRAN adjacent cell Triggering condition: It is used in the ANR function between the LTE system and the UTRAN system. After the eNodeB receives the CGI measurement result of a UTRAN neighboring cell reported by the UE, the eNodeB reports this reference point to OMC. 16> R16: Request to add UTRAN adjacent relation Triggering condition: It is used in the ANR function between the LTE system and the UTRAN system. After the statistical period ends, if the neighboring cell meets the condition which is used to add UTRAN neighboring cell, the eNodeB reports the statistical results of the temporary neighboring cell to OMC and requests to add the UTRAN neighboring cell. 17> R17: Request to remove UTRAN adjacent relation Triggering condition: It is used in the ANR function between the LTE system and the UTRAN system. After the neighbor auto deletion statistics ends and the eNodeB reports the neighboring cells meeting the auto deletion criteria to OMC and requests to delete the UTRAN neighboring cells. 18> R18: Request to modify NOHO attribute Triggering condition: In the NOHO attribute modification statistical period, the eNodeB receives the HO results and checks whether the total number of HO times and the HO fail rate reach the configured thresholds, namely hoTimesThreshold and hoFailureRatio. If both of them reach the thresholds, the eNodeB reports a request to modify the NOHO attribute of a neighboring cell to OMC. ZTE Confidential Proprietary


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ZTE LTE FDD ANR Feature Guide 19> BR0: Add adjacent cell information Triggering condition: After OMC receives the requests from the eNodeB to add ANR neighboring cells (including intra-LTE ANR neighboring cells, GSM ANR neighboring cells, and UTRAN ANR neighboring cells), OMC reports this reference point and presents the neighboring cells information to be added to users, so that users can make their choices. 20> BR1: Adjacent cell add results Triggering condition: When the adding of an ANR neighboring cell finishes (the operation may succeed or fail), OMC presents the operation result to users. This reference point cannot be set as a breaking point. 21> BR2: Adjacent cell remove results Triggering condition: OMC receives a request from the eNodeB to delete an ANR neighboring cell and performs the deletion operation. When the operation finishes (the operation may succeed or fail), OMC presents the operation result to users. This reference point cannot be set as a breaking point. 22> BR3: Modify No Handover attribute Triggering condition: OMC receives a request from the eNodeB to modify the NOHO attribute of a neighboring cell and performs the modification operation. When the operation finishes (the operation may succeed or fail), OMC presents the operation result to users. This reference point cannot be set as a breaking point.

3.2.1 Intra-LTE ANR Addition Figure 3-4 shows the procedure of intra-LTE ANR addition.



10

ZTE LTE FDD ANR Feature Guide Figure 3-4

UE

Intra-LTE ANR Addition

eNodeB

OMC

1.RRCConnectionReconfiguration 2.MeasurementReport

3.Detected E-UTRAN Unknown PCI

3a.R0 Breakpoint Interworking/Monitoring Report

4.Select UE for ECGI Measurement

4a.R1 Breakpoint Interworking/Monitoring Report 5.RRCConnectionReconfiguration 6.MeasurementReport 6a.RRCConnectionReconfiguration

7.Receive ECGI Measurement Result 7a.Add Temporary Adjacent Cell

7b.R2 Breakpoint Interworking/Monitoring Report

7c.Start Statistic Timer 7'a.MeasurementReport

7'b.Different ECGI will Trigger PCI Collision & Confusion Detection

8.MeasurementReport/HandoverResult

8a.Statistic Times of MeasurementReport & Handover Success

9.Statistic Timer is Timeout


10.eNB Judge Whether the Statistic Result Meet the Conditions of Adjacent Cell Addition 10a.Delete Temporary Adjacent Cells that can't meet the condition 11.Request to add E-UTRAN Adjacent Relation 11a.Start Timer for Deletion of Temprory Adjacent Cell 12.BR0 Breakpoint Interworking/Monitoring Report 12b.Adjacent Cell Configuration Synchronization 13.Stop Timer for Deletion of Temprory Adjacent Cell

12a.OMC Add Adjacent Cell 12c.BR1 Monitoring Report

13a.Timer for Deletion of Temprory Adjacent Cell is Timeout 13b.Delete Temprory Adjacent Cell

The procedure is as follows: 1> When a UE is RRC Connection status, the eNodeB sends intra-frequency/inter-frequency A3 measurement configuration to the

UE

through

RRC

CONNECTION

RECONFIGURATION

messages.



11

ZTE LTE FDD ANR Feature Guide 2> If signals of the serving cell and the neighboring cell meet the criteria of the A3 event, UE reports measurement report contained A3 event. 3> If the eNodeB finds that the PCI in the measurement report is not the PCI of a configured neighboring cell, the eNodeB detects an unknown E-UTRAN neighboring cell. 3a> The eNodeB performs R0 breaking point interaction with OMC and reports the monitoring results to OMC. -

If ANR works in the controlled mode and Ri is a breaking point, then Ri breaking point interaction is performed. Otherwise, the eNodeB only reports the monitoring results to OMC and Ri breaking point interaction is not performed.

-

If ANR works in the free mode and the monitoring result report function is enabled, then the eNodeB only reports the monitoring results to OMC and breaking point interaction is not performed. Note: Breaking point interaction includes the report of monitoring

results.

The

interaction

procedures

of

all

reference points are the same to this, and it will not be mentioned again in the following parts.

4> The eNodeB selects a UE for ECGI measurement. If the UE that reports the measurement report containing an unknown PCI has the intra-frequency/inter-frequency ANR measurement capability, this UE will be selected for ECGI measurement. If the UE does not have the intra-frequency/inter-frequency ANR measurement capability, select another UE which has the intra-frequency/inter-frequency ANR measurement capability to do ECGI measurement. 4a> The eNodeB performs R1 breaking point interaction/report of monitoring results. 5> The eNodeB sends an RRC CONNECTION RECONFIGURATION message that contains the ECGI measurement configuration to the UE (or multiple UEs) selected in step 4, informs the UE to perform the ECGI measurement, and starts ANR_TIMER1 (waiting for the ZTE Confidential Proprietary


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ZTE LTE FDD ANR Feature Guide ECGI measurement result) timer to wait for the ECGI measurement result. 6> If the eNodeB receives a measurement report from the UE that contains the ECGI measurement result before ANR_TIMER1 times out, it recovers the measurement configuration of the UE through RRC CONNECTION RECONFIGURATION message. Otherwise, it will go to step 4 and re-select a UE for ECGI measurement. The maximum number of times of UE re-selection is determined by the OMC. 7>

The

eNodeB

obtains

the

ECGI

information

in

the

ECGI

measurement report. 7a> The eNodeB adds the discovered neighboring cell as a temporary neighboring cell. 7b> The eNodeB performs R2 breaking point interaction and reports the monitoring result to OMC. 7c> The eNodeB starts ANR_TIMER2 (temporary neighbor statistics timer) timer. 7’a> UE reports ECGI measurement report to eNodeB. 7’b> If the eNodeB receives multiple ECGI measurement reports of the same neighboring cell with unknown PCI before ANR_TIMER2 times out and the measurement results are inconsistent, the eNodeB triggers the PCI conflict and confusion detection function, reports PCI confusion and resolves it. (The PCI conflict/confusion resolution procedure is described in ZTE LTE FDD PCI Feature Guide document.) 8> Before ANR_TIMER2 times out, the eNodeB counts the number of measurement reports of the temporary neighboring cell and handover successfully between the serving cell and the temporary neighboring cell. 8a> The eNodeB report the result of step 8 to OMC. 9> ANR_TIMER2 times out. 9a> After the ANR_TIMER2 times out, the eNodeB perform R5 breaking point interaction/report of monitoring results. ZTE Confidential Proprietary


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ZTE LTE FDD ANR Feature Guide 10> The eNodeB checks whether the number of measurement reports of the temporary neighboring cell and handover successfully between the serving cell and the temporary neighboring cell meet the neighboring cell adding criteria. 10a> If the statistical results do not meet the criteria, the eNodeB deletes the temporary neighbor and the ANR procedure ends. 11> If the statistical results meet the criteria, the eNodeB sends a neighboring cell add request to OMC, requesting to add the temporary neighboring cell as a formal neighbor. 11a> The eNodeB starts ANR_TIMER3 (temporary neighbor deletion timer). 12> When OMC receives the request to add the temporary neighbor as a formal neighboring cell, BR0 breaking point interaction/report of monitoring results is performed. 12a> OMC adds the formal neighbor configuration. 12b> the OMC synchronize the neighbor configuration to the eNodeB. 12c> the eNodeB reports the BR1 monitoring results to OMC and OMC will present the ANR adding result to users. 13> When the formal neighbor configuration is sent to the eNodeB successfully, the eNodeB ends ANR_TIMER3 and the procedure ends. 13a>If the formal neighbor configuration is not sent to the eNodeB successfully before ANR_TIMER3 times out, perform the step 13b. 13b> The eNodeB deletes the temporary neighbor and the procedure ends.

3.2.2 Intra-LTE ANR Deletion Figure 3-5 shows the intra-LTE ANR deletion procedure.



14


UE

Intra-LTE ANR Deletion

eNodeB

OMC 1.Add Adjacent Relation 2.Judge Whether the number of Adjacent Cells meet the Threshold of Self-Delete 2a.If the Condition in Step 2 is Meet, Start the Timer of Self-Delete

3.MeasurementReport 3a.Statistic the Number of MeasurementReport

4.Timer of Self-Delete is Timeout 5.Find the Adjacent Cells That Meet the Condition of Self-Delete

5a.R4 Breakpoint Interworking/Monitoring Report 6.Request to Remove the Adjacent Relation 6a.Start the Timer of Self-Delete Result Detection 7a.Adjacent Relation Configuration Synchronization

7.Delete Adjacent Relation 7b.BR2 Monitoring Report

8.Timer of Self-Delete Result Detection is Timeout, go to Step 2

The procedure is as follows: 1> The eNodeB triggers the ANR deletion detection in the following two scenarios: Scenario 1: OMC adds a new neighbor relation and synchronizes the configuration to the eNodeB, which triggers ANR deletion detection. Scenario 2: The status of the serving cell becomes normal, which triggers neighbor deletion detection. 2> The eNodeB checks whether the number of neighboring cells of the serving cell reaches the value ofselfDeleteNbrCellThrd (namely The Number of Neighboring cell to Trigger ANR Self-Delete Function). 2a> If the number of intra-frequency or inter-frequency neighboring cells is larger than or equal to the value of selfDeleteNbrCellThrd, ANR_DEL_TIMER1 (ANR deletion statistics timer) is started. Otherwise, the ANR deletion procedure ends. 3> UE reports the measurement report of neighboring cell. 3a> Then the eNodeB counts the number of measurement reports of neighboring cell before ANR_DEL_TIMER1 times out. 4> ANR_DEL_TIMER1 times out. ZTE Confidential Proprietary


15

ZTE LTE FDD ANR Feature Guide 5> The eNodeB select the neighboring cell to be deleted. The neighboring cell to be deleted should meet both of the following two conditions: 1) The NoRemove attribute of the neighboring cell is set as FALSE, which indicates that the neighboring cell can be deleted. 2) Among all the neighboring cells whose NoRemove attribute is set as FALSE, the cell to be deleted should have the smallest number of measurement reports. 5a> The eNodeB performs R4 breaking point interaction with OMC and reports monitoring results to OMC. 6> The eNodeB sends a neighboring cell deletion request to OMC. 6a> The eNodeB starts ANR_DEL_TIMER2 (ANR deletion repeated detection timer) and waits for the next ANR deletion detection. 7> When OMC receives the neighboring cell deletion request from the eNodeB, it deletes the neighboring cell configuration. 7a> Then OMC synchronizes the neighboring cell deletion configuration to the eNodeB. 7b> The eNodeB reports the BR2 monitoring results to OMC and OMC presents the ANR deletion results to users (step 7b). 8> When ANR_DEL_TIMER2 times out, the ANR deletion procedure is restarted again from step 2.

3.2.3 Inter-RAT ANR Addition to GSM Figure 3-6 shows the inter-RAT ANR addition from E-UTRAN to GSM procedure.



16


UE

inter-RAT ANR Addition to GSM

eNodeB

OMC

1.MeasurementReport(Inter-frequency A2/ANR A2)

2.RRCConnectionReconfiguration 3.MeasurementReport 3a.RRCConnectionReconfiguration

3b.Detected GSM Unknown PCI


4.Select UE for GSM CGI Measurement


7.Receive GSM CGI Measurement Result 7a.Add Temporary Adjacent Cell


7c.Start Statistic Timer








The procedure is as follows: 1> When the signals of the serving cell meet the entry condition of inter-frequency or ANR A2 Event, and UE reports an inter-frequency A2 measurement report or a dedicated ANR A2 measurement report to eNodeB. 2> The eNodeB sends an RRC CONNECTION RECONFIGURATION message that contains the inter-RAT measurement of GSM



17

ZTE LTE FDD ANR Feature Guide frequencies to the UE and informs the UE to report the GSM neighboring cell with the strongest signal. 3> The UE sends measurement report that contains the detected the strongest GSM neighboring cell’s PCI. 3a>Te eNodeB recovers the measurement configuration of the UE through an RRC CONNECTION RECONFIGURATION message. 3b> When the eNodeB receives the measurement report from the UE and finds that the PCI in the report is not the PCI of configured neighboring cells, it detects a GSM neighboring cell with an unknown PCI and triggers the inter-RAT ANR function. 3c>The eNodeB performs the R8 breaking point interaction with OMC and reports the monitoring results to OMC. 4> The eNodeB selects a UE for CGI measurement. If the UE sending the measurement report containing the strongest GSM neighboring

cell’s PCI has the inter-RAT ANR measurement capability of GSM, this UE will be selected for CGI measurement. Otherwise, selects another UE which has the inter-RAT ANR measurement capability of GSM to do CGI measurement. 4a> The eNodeB performs R9 breaking point interaction with OMC and reports monitoring results. 5> The eNodeB sends RRC CONNECTION RECONFIGURATION message that contains the CGI measurement configuration to the UE (or multiple UEs) in step 4, informs the UE to perform the CGI measurement and starts GSM_ANR_TIMER1 (waiting for the CGI measurement result of the GSM neighboring cell). 6> The eNodeB receives measurement report containing the CGI measurement

result

of

the

GSM

neighboring

cell

before

GSM_ANR_TIMER1 times out. If the eNodeB does not receive the CGI measurement result before GSM_ANR_TIMER1 times out, the procedure goes to step 4 and the eNodeB re-selects a UE for CGI measurement. The maximum number of times of UE re-selection is determined by the background configuration. 6a> The eNodeB recovers the measurement configuration of the UE through an RRC CONNECTION RECONFIGURATION message. ZTE Confidential Proprietary


18

ZTE LTE FDD ANR Feature Guide 7> The eNodeB obtains the CGI information in the CGI measurement report sent by the UE. 7a> The eNodeB adds the discovered neighboring cell as a temporary neighboring cell. 7b>The eNodeB performs R10 breaking point interaction with and reports the monitoring result to OMC. 7c>The

eNodeB

starts

GSM_ANR_TIMER2

(temporary

neighbor

statistics timer). 8> Before GSM_ANR_TIMER2 times out, the eNodeB counts the number of measurement report times of temporary neighbor and handover successfully times between the serving cell and the temporary neighboring cell, based on the reports from the UE. 9> GSM_ANR_TIMER2 (temporary neighbor statistics timer) times out. 9a> The eNodeB performs R11 breaking point interaction with and reports monitoring results to OMC. 10> The eNodeB checks whether the number of measurement report times of temporary neighbor and handover successfully times between the serving cell and the temporary neighboring cell meet the neighboring cell adding criteria. 10a>If the statistical results do not meet the criteria, the eNodeB deletes the temporary neighboring cell and the ANR procedure ends. 11> If the temporary neighbor’s statistical results meet the neighboring cell adding criteria, the eNodeB sends a request to OMC, requesting to add the temporary neighboring cell as a formal neighboring cell. 11a>The

eNodeB

starts GSM_ANR_TIMER3

(temporary neighbor

deletion timer). 12> When OMC receives the request to add the temporary neighboring cell

as

a

formal

neighboring

cell,

BR0

breaking

point

interaction/report of monitoring results is performed. 12a>The OMC adds the formal neighbor configuration. 12b>The OMC synchronize the neighbor configuration to the eNodeB.



19

ZTE LTE FDD ANR Feature Guide 12c> The eNodeB reports the BR1 monitoring results to OMC and OMC will present the ANR adding result to users. 13> When the formal neighbor configuration is sent to the eNodeB successfully, the eNodeB ends GSM_ANR_TIMER3 and the procedure ends. 13a>If the formal neighbor configuration is not sent to the eNodeB successfully before GSM_ANR_TIMER3 times out, perform the step 13b. 3b> The eNodeB deletes the temporary neighbor and the procedure ends.

3.2.4 Inter-RAT ANR Deletion to GSM Figure 3-7 shows the inter-RAT ANR deletion to GSM procedure.

Figure 3-7

UE

inter-RAT ANR Deletion TO GSM

eNodeB







The detail procedure is as follows: 1> The eNodeB triggers the inter-RAT ANR deletion detection in the following two scenarios:



20

ZTE LTE FDD ANR Feature Guide Scenario 1: OMC adds a new neighbor relation and synchronizes the configuration to the eNodeB, which triggers ANR deletion detection. Scenario 2: The status of the serving cell becomes normal, which triggers neighbor deletion detection. 2> The eNodeB checks whether the number of GSM neighboring cells of the serving cell reaches the value of selfDeleteNbrCellThrd configured on OMC. 2a> If the number of GSM neighboring cells is larger than or equal to selfDeleteNbrCellThrd,

GSM_ANR_DEL_TIMER1

(ANR

deletion

statistics timer) is started. Otherwise, the ANR deletion procedure ends. 3>

Before

GSM_ANR_DEL_TIMER1

times out, UE

reports the

measurement report of GSM neighboring cell. 3a> The eNodeB counts the number of measurement reports of neighboring cell. 4> GSM_ANR_DEL_TIMER1 times out. 5> The eNodeB select the neighboring cell to be deleted. The neighboring cell to be deleted should meet both of the following two conditions: 1)

The NoRemove attribute of the neighboring cell is set as

FALSE, which indicates that the neighboring cell can be deleted. 2)

Among all the neighboring cells whose NoRemove attribute is

set as FALSE, the cell to be deleted should have the smallest number of measurement reports. 5a> The eNodeB performs R12 breaking point interaction with OMC and reports monitoring results to OMC. 6> The eNodeB sends a neighboring cell deletion request to OMC. 6a> The eNodeB starts GSM_ANR_DEL_TIMER2 (ANR deletion repeated detection timer) and waits for the next ANR deletion detection. 7> When OMC receives the neighboring cell deletion request from the eNodeB, it deletes the neighboring cell configuration. ZTE Confidential Proprietary


21

ZTE LTE FDD ANR Feature Guide 7a> Then OMC synchronizes the neighboring cell deletion configuration to the eNodeB. 7b> The eNodeB reports the BR2 monitoring results to OMC and OMC presents the ANR deletion results to users. 8> When GSM_ANR_DEL_TIMER2 times out, the ANR deletion procedure is restarted again from step 2.

3.2.5 Inter-RAT ANR Addition to UTRAN Figure 3-8 shows the inter-RAT ANR addition to UTRAN procedure.



22


UE

inter-RAT ANR Addition to UTRAN

eNodeB

OMC

1.MeasurementReport(Inter-frequency A2/ANR A2)

2.RRCConnectionReconfiguration 3.MeasurementReport 3a.RRCConnectionReconfiguration

3b.Detected UTRAN Unknown PCI


4.Select UE for UTRAN CGI Measurement


7.Receive UTRAN CGI Measurement Result 7a.Add Temporary Adjacent Cell


7c.Start Statistic Timer








The procedure is as follows 1> When the signals of the serving cell meet the entry condition of inter-frequency or ANR A2 Event, and UE reports an inter-frequency A2 measurement report or a dedicated ANR A2 measurement report to eNodeB. 2> The eNodeB sends an RRC CONNECTION RECONFIGURATION message that contains the inter-RAT measurement of UTRAN frequencies to the UE and informs the UE to report the UTRAN neighboring cell with the strongest signal. ZTE Confidential Proprietary


23

ZTE LTE FDD ANR Feature Guide 3> The UE sends a measurement report that contains the detected strongest UTRAN neighboring cell’s PSC. 3a> The eNodeB recovers the measurement configuration of the UE through an RRC CONNECTION RECONFIGURATION message. 3b> When the eNodeB receives an unknown PSC in the measurement report, it detects a UTRAN neighboring cell with an unknown PSC and triggers the inter-RAT ANR function. 3c> The eNodeB performs the R13 breaking point interaction with OMC and reports the monitoring results to OMC. 4> The eNodeB selects a UE for CGI measurement. If the UE sending the

measurement

report

containing

the

strongest

UTRAN

neighboring cell’s PSC has the inter-RAT ANR measurement capability of UTRAN, this UE will be selected for CGI measurement. Otherwise, select another UE who has the inter-RAT ANR measurement capability of UTRAN to do CGI measurement. 4a> The eNodeB performs R14 breaking point interaction with OMC and reports the monitoring results to OMC. 5> The eNodeB sends an RRC CONNECTION RECONFIGURATION message that contains the CGI measurement configuration to the UE (or multiple UEs) selected in step 4, informs the UE to perform the CGI measurement, and starts UTRAN_ANR_TIMER1 (waiting for the CGI measurement result of the UTRAN neighboring cell). 6> The eNodeB receives measurement report from the UE containing the CGI measurement result of the UTRAN neighboring cell before UTRAN_ANR_TIMER1 times out. 6a> The eNodeB recovers the measurement configuration of the UE through RRC CONNECTION RECONFIGURATION message. If the eNodeB does not receive the CGI measurement result before UTRAN_ANR_TIMER1 times out, it goes to step 4 and re-select a UE for CGI measurement. The maximum number of times of UE re-selection is determined by the background configuration. 7> The eNodeB obtains the CGI in the CGI measurement report sentby the UE.



24

ZTE LTE FDD ANR Feature Guide 7a>The eNodeB adds the discovered neighboring cell as a temporary neighbor. 7b>The eNodeB performs R15 breaking point interaction with OMC and reports the monitoring result to OMC. 7c> The eNodeB starts UTRAN_ANR_TIMER2 (temporary neighbor statistics timer). 8> Before UTRAN_ANR_TIMER2 times out, the eNodeB counts the number of measurement report times of temporary neighbor and handover successfully times between the serving cell and the temporary neighboring cell. 9> UTRAN_ANR_TIMER2 (temporary neighbor statistics timer) times out. 9a> The eNodeB performs R16 breaking point interaction with OMC and reports monitoring results to OMC. 10> The eNodeB checks whether the number of measurement report times of temporary neighbor and handover successfully times between the serving cell and the temporary neighboring cell meet the neighboring cell adding criteria. 10a> If the statistical results do not meet the criteria, the eNodeB deletes the temporary neighboring cell and the ANR procedure ends. 11> If the temporary neighbor’s statistical results meet the neighboring cell adding criteria, the eNodeB sends a request to OMC, requesting to add the temporary neighboring cell as a formal neighbor. 11a>The eNodeB starts UTRAN_ANR_TIMER3 (temporary neighbor deletion timer). 12> When OMC receives the request to add the temporary neighboring cell

as

a

formal

neighboring

cell,

BR0

breaking

point

interaction/report of monitoring results is performed. 12a>Then OMC adds the formal neighbor relation configuration. 12b>The OMC synchronize the neighbor configuration to the eNodeB. 12c> The eNodeB reports the BR1 monitoring results to OMC and OMC will present the ANR adding result to users. ZTE Confidential Proprietary


25

ZTE LTE FDD ANR Feature Guide 13> When the formal neighbor configuration is sent to the eNodeB successfully before UTRAN_ANR_TIMER3 times out, the eNodeB ends UTRAN_ANR_TIMER3 and the procedure ends. 13a>If the formal neighbor configuration is not sent to the eNodeB successfully before GSM_ANR_TIMER3 times out, perform the step 13b. 13b>The eNodeB deletes the temporary neighboring cell and the procedure ends.

3.2.6 Inter-RAT ANR Deletion to UTRAN Figure 3-9 shows the inter-RAT ANR deletion to UTRAN procedure.

Figure 3-9

UE

inter-RAT ANR Deletion to UTRAN

eNodeB







The procedure is as follows: 1> The eNodeB triggers the inter-RAT ANR deletion detection in the following two scenarios: Scenario 1: OMC adds a new neighbor relation and synchronizes the configuration to the eNodeB, which triggers ANR deletion detection.



26

ZTE LTE FDD ANR Feature Guide Scenario 2: The status of the serving cell becomes normal, which triggers neighbor deletion detection. 2> The eNodeB checks whether the number of UTRAN neighboring cells of the serving cell reaches the value of selfDeleteNbrCellThrd configured on OMC. 2a> If the number of neighboring cells is larger than or equal to selfDeleteNbrCellThrd, UTRAN_ANR_DEL_TIMER1 (ANR deletion statistics timer) is started. If the number of UTRAN neighboring cells does not reach selfDeleteNbrCellThrd, the ANR deletion procedure ends. 3> Before UTRAN_ANR_DEL_TIMER1 times out, UE reports the measurement report of UTRAN neighboring cell. 3a> Then the eNodeB counts the number of measurement reports of neighboring cell. 4> UTRAN_ANR_DEL_TIMER1 times out. 5> The eNodeB selects the neighboring cell to be deleted. The neighboring cell to be deleted should meet both of the following two conditions: 1) The NoRemove attribute of the neighboring cell is set as FALSE, which indicates that the neighboring cell can be deleted. 2) Among all the neighboring cells whose NoRemove attribute is set as FALSE, the cell to be deleted should have the smallest number of measurement reports. 5a>The eNodeB performs R17 breaking point interaction with OMC and reports monitoring results to OMC 6> The eNodeB sends a neighboring cell deletion request to OMC. 6a> The eNodeB starts UTRAN_ANR_DEL_TIMER2 (ANR deletion repeated detection timer) and waits for the next ANR deletion detection. 7> When OMC receives the neighboring cell deletion request from the eNodeB, it deletes the neighboring cell configuration. 7a> Then OMC synchronizes the neighboring cell deletion configuration to the eNodeB. ZTE Confidential Proprietary


27

ZTE LTE FDD ANR Feature Guide 7b> The eNodeB reports the BR2 monitoring results to OMC and OMC presents the ANR deletion results to users. 8> When UTRAN_ANR_DEL_TIMER2 times out, the ANR deletion procedure is restarted again from step 2.

3.2.7 Intra-LTE ANR Based on Bidirectional Configuration Switch Figure 3-10 shows the procedure of intra-LTE ANR based on bidirectional configuration switch.

Figure 3-10

eNodeB2

Intra-LTE ANR based on bidirectional configuration switch

eNodeB1

OMC

1.ENB CONFIGURATION UPDATE 2.Start Timer of Delay Detection

3.Timer of Delay Detection is Timeout 3a.Detected Ajacent Cell that Need to Add Mutual Relation


4.Judge Whether the Add Mutual Neighbour Cell Switch is Enable

5.Add Temporary Ajacent Cell 5a.Request to Add Ajacent Cell Based on X2 5b.Start Timer for Deletion of Temprory Adjacent Cell

6.Add Temporary Ajacent Cell 6a.Start Statistic Timer of Ajacent Addition



8.Timer of Ajacent Addition is Timeout


9.Judge Whether the Statistic Result Meet the Conditions of Adjacent Cell Addition 9a.Delete Temporary Adjacent Cells that can't meet the condition 10.Request to Add E-UTRAN Adjacent Relation Based on X2 10a.Start Timer for Deletion of Temprory Adjacent Cell

11.BR0 Breakpoint Interworking/Monitoring Report 11b.Ajacent Cell Configuration Synchronization 12.Stop Timer for Deletion of Temprory Adjacent Cell





28

ZTE LTE FDD ANR Feature Guide The procedure is as follows: 1> The eNodeB1 receives an ENB CONFIGURATION UPDATE message from eNodeB2. 2> The eNodeB1 starts the intra-LTE ANR addition based on X2 interface detection timer BASED_X2_ANR_ADD_TIMER1. 3> When BASED_X2_ANR_ADD_TIMER1 times out, the eNodeB performs ANR bidirectional neighboring cell detection. 3a> The eNodeB1 discovers an bidirectional neighboring cell that needs to be added. 3b> The eNodeB1 performs R6 breaking point interaction with OMC and reports the monitoring results to OMC. 4> The eNodeB1 checks whether twoWayFlg (namely Intra-LTE Neighbor Cell Relation Bidirectional Configuration Switch) of the serving cell is open. If twoWayFlg is “Open”, step 5 is performed. Otherwise, step 6 is performed. 5> If the ANR bidirectional configuration switch is open, the eNodeB1 adds the discovered neighboring cell as a temporary neighboring cell and perform step 5a. 5a> The eNodeB requests OMC to add the ANR neighbor discovered through X2 interface. 5b>The

eNodeB

starts

the

temporary

neighbor

deletion

timer

BASED_X2_ANR_ADD_TIMER2. After that, go to step 11. 6> If the ANR bidirectional function is close, the eNodeB1 adds the discovered neighboring cell as a temporary neighboring cell. 6a>The

eNodeB

starts

temporary

neighbor

statistics

timer

BASED_X2_ANR_ADD_TIMER3. 7> Before BASED_X2_ANR_ADD_TIMER3 times out, the eNodeB1 receives the

temporary neighbor’s measurement report and

handover results from UEs. 7a>The eNodeB counts the number of measurement report times of temporary neighbor and handover successfully times between the serving cell and the temporary neighboring cell. ZTE Confidential Proprietary


29

ZTE LTE FDD ANR Feature Guide 8> BASED_X2_ANR_ADD_TIMER3 times out. 8a> The eNodeB reports the temporary neighbor’s statistics to OMC. And performs R7 breaking point interaction with OMC and reports the monitoring results to OMC. 9> The eNodeB checks whether the number of measurement report times of temporary neighbor and handover successfully times between the serving cell and the temporary neighboring cell meet the neighboring cell adding criteria. 9a> If the statistical results do not meet the criteria, the eNodeB deletes the temporary neighbor and the procedure ends. 10> If the statistical results meet the neighboring cell adding criteria, the eNodeB sends a request to OMC, requesting to add the ANR neighboring cell discovered through X2 interface. 10a>The

eNodeB

starts

temporary

neighbor

deletion

timer

BASED_X2_ANR_ADD_TIMER2. 11> When OMC receives the request to add the neighboring cell, BR0 breaking point interaction/report of monitoring results is performed. 11a>Then OMC adds the neighbor configuration. 11b> The OMC synchronize the neighbor configuration to the eNodeB. 11c> The eNodeB reports the BR1 monitoring results to OMC and OMC will present the ANR adding result to users. 12> When the eNodeB receives the neighbor configuration before BASED_X2_ANR_ADD_TIMER2

times

out,

it

ends

BASED_X2_ANR_ADD_TIMER2 and the procedure ends. 12a>If the eNodeB does not receive the neighbor configuration before BASED_X2_ANR_ADD_TIMER2 times out, perform step 12b. 12b>The eNodeB deletes the temporary neighbor and the procedure ends.

3.2.8 Modifying the NOHO Attribute of a Neighbor cell When the status of the serving cell becomes normal, the NOHO attribute of the neighboring cells is set as FALSE, and the ANR service ZTE Confidential Proprietary


30

ZTE LTE FDD ANR Feature Guide switch and the ANR Enable switch is opened, the eNodeB enables the NOHO attribute modification detection function for all neighboring cells of the serving cell. Figure 3-11 shows the procedure to modify the NOHO attribute of a neighboring cell within the LTE system.

Figure 3-11

UE

Modifying the NOHO Attribute of a Neighboring cell

eNodeB

OMC

1.Start Timer of NoHo Attribute Modification

2.Handover Result Report 2a.Statistic Handover Result

3.Judge Whether the Handover Failure Ratio Meet the Threshold

4.R18 Breakpoint Interworking/Monitoring Report 5.Request to Modify Adjacent Cell NoHo Attribute 5a.Restart Timer of NoHo Attribute Modification

6.Modify Adjacent NoHo Attribute 6a.Adjacent NoHo Attribute Configuration Synchronization 7.Adjacent NoHo Attribute Modification Complete

8.Timer of NoHo Attribute Modification is Timeout, go to Step1

The procedure is as follows: 1> When NOHO attribute modification detection function is triggered, the eNodeB starts a statistics timer ANR_NOHO_TIMER1 for each neighboring cell. 2> UE sends handover results from the serving cell to the neighboring cell. 2a> The eNodeB collects the handover results. 3> The eNodeB checks whether the handover failure rate and the total number of handover operations meet hoFailureRatio (HO Failure RatioThreshold to Modify NoHo Attribute) and hoTimesThreshold (HO Times Threshold to Modify NoHo Attribute) respectively. If they meet hoFailureRatio and hoTimesThreshold, then step 4 is performed. Otherwise, statistics based on the handover results reported by step 2 continues, until ANR_NOHO_TIMER1 times out, and then step 8 is performed. ZTE Confidential Proprietary


31

ZTE LTE FDD ANR Feature Guide 4> The eNodeB performs R18 breaking point interaction with OMCand reports the monitoring result to OMC. 5> The eNodeB sends a request to OMC, requesting to modify the NOHO attribute of the neighboring cell. 5a> The eNodeB clears the handover statistics of the neighboring cell and restarts ANR_NOHO_TIMER1 for NOHO attribute modification statistics of neighboring cell. 6> Before ANR_NOHO_TIMER1 times out, OMC modifies the NOHO attribute of the neighboring cell (This modification can be triggered either by the modification request in step 5 or by a manual modification operation). 6a> OMC synchronizes the modification to the eNodeB. 7> The eNodeB updates the configuration and completes the modification

of

the

neighboring

cell’s NOHO attribute. The

procedure ends. 8> When ANR_NOHO_TIMER1 times out, the eNodeB clears the handover statistics of the neighboring cell and then goes to step 1 to restart the ANR_NOHO_TIMER1 timer and continue the NOHO attribute modification statistics.

4 Key Parameters and Configuration 4.1

Parameters List Table 4-1

SN

Parameters list

Name

Figure

1

sonSwitch

Figure 4-4

2

ANR Enable

Figure 4-9

3

ANR Measure Object Choice Counter

Figure 4-9

4

Neighbor Cell Report threshold

Figure 4-9

5

Handover Success threshold

Figure 4-9

6

Run Mode

Figure 4-9



32

ZTE LTE FDD ANR Feature Guide 7

Intra-LTE Neighbor Cell Relation Bidirectional Configuration Switch

8

Intra-LTE ANR Self-Delete Switch

Figure 4-9

9

Inter-System GSM ANR Switch

Figure 4-9

10

Inter-System GSM ANR Self-Delete Switch

Figure 4-9

11

Inter-System UTRAN ANR Switch

Figure 4-9

12

Inter-System UTRAN ANR Self-Delete Switch

Figure 4-9

13

HO Times Threshold to Modify NoHo Attribute

Figure 4-9

14

HO Failure RatioThreshold to Modify NoHo Attribute

15

The Number Of Neighbor Cell to Trigger ANR Self-Delete Function

16

Timer Length for ANR Temporary Neighbor Cell Statistic

Figure 4-9

Figure 4-9

Figure 4-9

17

Inter-Frequency Number

Figure 4-17

18

Inter-Frequency Measurement Configuration

Figure 4-18

19

GERAN-Frequency Number

Figure 4-17

20

GERAN-Frequency Measurement

Figure 4-19

Configuration 21

UTRAN-Frequency Number

22

UTRAN-Frequency Measurement

Figure 4-17 Figure 4-20

Configuration

4.2

Figure 4-9

23

DRX Switch for GBR

Figure 4-22

24

DRX Switch for NGBR

Figure 4-22

Parameters Configuration Rule Table 4-2 The rule of parameters configuration

SN

Name

Description

Default

Value Range

Value

For each SON

1

Service Switch

function, there is a corresponding

0:Close,1:Open

Close

service switch.



33

ZTE LTE FDD ANR Feature Guide The switch of

2

ANR Enable

intra-LTE ANR function.

0:Disable,1:Ena

Disable

ble

The max number

3

of UE is selected to do ANR ANR Measure Object Choice Counter

measurement. When the counter is out of range

[1..65535]

9

and eNodeB will not select suitable UEs for the detected cell. Threshold of

4

Neighbor Cell

measurement

Report

report of the

threshold

temporary

[0..65535]

30

[0..65535]

6

neighbor cell. 5

Handover Success threshold

Threshold of HO success of the temporary neighbor cell. The run mode of

6

the SON function; There is two mode defined: Free mode: The SON function is Run Mode

running

0:Free

automatically

Mode,1:Controll

without manual

ed Mode

Free Mode

intervention; Controlled mode: The user can control the SON function during running.



34

ZTE LTE FDD ANR Feature Guide The parameter

7

Intra-LTE Neighbor Cell Relation Bidirectional Configuration Switch

indicates whether the Intra-LTE Neighbor Cell Relation

0:Close,1:Open

Close

0:Close,1:Open

Close

0:Close,1:Open

Close

0:Close,1:Open

Close

Bidirectional Configuration function is open or not. The parameter

8

Intra-LTE ANR Self-Delete Switch

indicates whether the Intra-LTE ANR deletion function is open or not.

9

This

parameter

indicates

whether

enable the Inter-Rat GSM ANR function

Inter-System GSM ANR

or not. Close

Switch

GSM ANR function

:Inter-Rat

is close;

Open: Inter-Rat GSM ANR function is open. The parameter

10

Inter-System

indicates whether

GSM ANR

the Inter-RAT

Self-Delete

GSM ANR

Switch

deletion function is open or not.



35


This

parameter

indicates

whether

enable the Inter-Rat UTRAN

ANR

Inter-System

function or not.

UTRAN ANR

Close

Switch

UTRA ANR function

:Inter-Rat

0:Close,1:Open

Close

0:Close,1:Open

Close

[1..65535]

50

[0..100]

80

[1..32]

30

is close;

Open: Inter-Rat UTRA ANR function is open. The parameter

12

Inter-System

indicates whether

UTRAN ANR

the Intra-LTE

Self-Delete

ANR deletion

Switch

function is open or not. This parameter

13

HO Times Threshold to Modify NoHo Attribute

indicates HO times threshold that is used to modify the NoHo attribute of neighboring cell This parameter

14

HO Failure RatioThreshol d to Modify NoHo Attribute

indicates HO failure ratio threshold that is used to modify the NoHo attribute of neighboring cell

15

The Number Of Neighbor Cell to Trigger ANR Self-Delete Function


The parameter indicates the max number of Neighbor Cell to Trigger ANR Self-Delete Function


36


Timer Length for ANR Temporary Neighbor Cell Statistic

Timer Length for ANR Temporary

[1..255],

Neighbor Cell

unit:hour

24

Statistic The parameter

17

Inter-Frequenc y Number

indicates the number of inter-frequency to

[0..8]

0

N/A

N/A

[0..16]

0

N/A

N/A

[0..32]

0

N/A

N/A

be measured. 18

Inter-Frequenc

The parameter

y

identifies the band

Measurement

class for EUTRAN

Configuration

frequency of a cell The parameter

19

GERAN-Frequ ency Number

indicates the number of GERAN-frequenc y to be measured.

20

GERAN-Frequ

The parameter

ency

identifies the band

Measurement

class for GERAN

Configuration

frequency of a cell The parameter

21

UTRAN-Frequ ency Number

indicates the number of UTRAN-frequenc y to be measured.

22

UTRAN-Frequ ency Measurement Configuration


The parameter identifies the frequency class for UTRAN frequency of a cell


37

ZTE LTE FDD ANR Feature Guide The DRX Switch

23

for GBR service controls whether DRX for GBR service is closed DRX Switch for GBR

or not. If he DRX Switch for GBR

0:Close,1:Open

Close[0]

0:Close,1:Open

Close[0]

service is closed, discontinuous reception (DRX) can not be used for a UE with GBR services. The DRX Switch

24

for NGBR service controls whether DRX for NGBR service is closed DRX Switch for NGBR

or not. If he DRX Switch for NGBR service is closed, discontinuous reception (DRX) can not be used for a UE with NGBR services.

4.3

Parameter Configuration Procedure

4.3.1 Releasing Mutex Right For SON test, you must release the NE mutex right firstly. The procedure is described below. 1.

Right-click the eNodeB, and select Rlease Mutex Right from the shortcut menu, see Figure 4-1. successfully,

indicates that mutex right is obtained

so when release mutex right successfully, the

is

disappear, see Figure 4-2.



38


Figure 4-2

Release Mutex Right

Release Mutex Right Successfully

4.3.2 Enabling the ANR Function 4.3.2.1

Configuring the ANR Enable Switch This procedure describes how to set a PCI policy and select the cells for using the policy.



39

ZTE LTE FDD ANR Feature Guide 1.

In the main window of the EMS, click Configuration > MO SDR SON

Configuration Application, see Figure 4-3. The MO SDR SON Configuration Application dialog box is displayed, see Figure 4-4.

Figure 4-3

MO SDR SON Configuration Application

Figure 4-4

2.

SON Management Tree

In the MO SDR SON Configuration Application window, double-click

SON Policy Management >SON Policy Template in the SON Management Tree. SON Policy Template dialog box is displayed. 3.

In the Policy Tree, double-click Managed Element> LTE FDD> E-UTRAN

FDD Cell>FDD SON Control . The FDD SON Control tab is displayed in the right pane, see Figure 4-5.



40


4.

FDD SON Control

On the FDD SON Control tab, click

. The FDD SON Control dialog

box is displayed. Enter the template name, set the service type to ANR, and set the service switch to Open, see Figure 4-6, and then click OK, the new SON control is displayed on FDD SON Control tab, see Figure 4-7.

Figure 4-6


ANR Enable Switch


41

ZTE LTE FDD ANR Feature Guide 5.

Click the new SON control, and then click

(Set) on the toolbar, see

Figure 4-7. The Set page is displayed. Set the eNodeB on which the SON control is to take effect and click OK, see Figure 4-8. After the ANR enable switch is sent to the eNodeB successfully, Succeed is displayed in the

Result column, see Figure 4-9.

Figure 4-7

Figure 4-8


Select ANR Enable Record

Relating ANR with the eNodeB


42


4.3.2.2

ANR Enable Switch Sent Successfully

Configuring the ANR Policy 1.

In the Policy Tree, double-click Managed Element> LTE FDD> E-UTRAN

FDD Cell> FDD ANR Policy . The FDD ANR Policy tab is displayed in the right pane, see Figure 4-10.

Figure 4-10

2.

Click

FDD ANR Policy Page

(Create Policy Template) on the toolbar. The FDD ANR

Policy dialog box is displayed, see Figure 4-11. Set the required ZTE Confidential Proprietary


43

ZTE LTE FDD ANR Feature Guide parameters, and click OK. The related parameter configuration refer to Section 4.2.

Figure 4-11


FDD ANR Policy


44


3.

SON Refer Point Attribute Table

After configured the parameters, the new ANR policy is displayed on the

FDD ANR Policy tab, see Figure 4-13.

Figure 4-13

4.

SON ANR Policy Record

Click the new ANR policy, and then click

(Set) on the toolbar. The Set

dialog box is displayed. If the ANR policy parameter template needs to be associated to the eNodeB which the ANR policy is to take effect, select the eNodeB to be associated, see Figure 4-14. If the ANR policy parameter template needs to be associated to the cell which the ANR policy is to take effect, select the cell to be associated, see Figure 4-15. Then click OK, ZTE Confidential Proprietary


45

ZTE LTE FDD ANR Feature Guide After the ANR policy is successfully configured, Success is displayed in the Result column,, see Figure 4-16.

Figure 4-14

Figure 4-15

Relating the ANR Policy to the eNodeBs

Relating the ANR Policy to Cells



46


ANR Policy Sent Successfully

4.3.3 The Other Related Parameters Configuring 1.

In Configuration Management widows of EMS, click Modify Area-> Radio

Parameter -> LTE FDD -> E-UTRAN FDD Cell -> Measurement Parameter ,

enter the Measurement Parameter configuration tab, see

Figure 4-17.

Figure 4-17


Measurement Parameter


47


2.

If the intra-LTE ANR function is enabled and the inter-frequency ANR addition function needs to be performed, then you need to configure the

Inter-Frequency Number parameter on the page as shown in Figure 4 -17, which indicates the number of inter-frequency frequencies. Then click

after parameter.

the In

inter-Frequency

the

displayed

Measurement

Configuration

Inter-Frequency

Measurement

Configuration dialog box, See Figure 4-18, configure the inter-frequency ANR frequencies to be measured. Otherwise, you do not need to configure the inter-frequency ANR frequencies.

Figure 4-18

3.

Inter-Frequency Measurement Configuration

If the Inter-System GSM ANR Switch is Open, you need to configure the GSM frequencies to be measured. Configure the GERAN-Frequency

Number parameter on the page as shown in Figure 4-17, which indicates the number of GSM frequencies, and then click

after the

GERAN-Frequency Measurement Configuration parameter. In the displayed GERAN-Frequency Measurement Configuration dialog box, See

Figure


4-19,

configure

GSM

frequency

information


on

the

48

ZTE LTE FDD ANR Feature Guide GERAN-Frequency Measurement Configuration page and make sure the GERAN Frequency ANR Indicator is Enable[1].

Figure 4-19

4.

GERAN-Frequency Measurement Configuration

If Inter-System UTRAN ANR Switch is Open, you need to configure the UTRAN

ANR

frequencies

to

be

measured.

Configure

the

UTRAN-Frequency Number parameter on the page as shown in Figure 4-17, which indicates the number of UTRAN frequencies, and then click after the UTRAN-Frequency Measurement Configuration parameter.

In

the

displayed

UTRAN-Frequency

Measurement

Configuration dialog box, See Figure 4-20, configure UTRAN frequency information on the UTRAN-Frequency Measurement Configuration page and make sure the UTRAN Frequency ANR Indicator is Enable[1].



49


5.

UTRAN-Frequency Measurement Configuration

Set the GBR and NGBR parameters of cell to Open and synchronize the configuration to eNodeB. a)

In the Topology Management window of the NetNumen U31 client, right-click the NE agent of eNodeB, and then select NE Management >

Start NE Management. The NE management is started. b)

Right-click

the NE

agent of

eNodeB, and

then select

NE

Management >Configuration Management. The NE Management window is displayed and the Configuration Management tab is displayed by default.

c)

On Configuration Management tab, in the NE tree in the upper left area, click Modify Area$0 under the eNodeB node. In the Managed

Element tree in the lower area, double-click Radio Parameter > LTE FDD > E-UTRAN FDD Cell. The E-UTRAN FDD Cell-List tab is displayed in the right pane, listing all the cells managed by eNodeB, see Figure 4-21.



50


E-UTRAN FDD Cell-List Tab

d)

Double-click the target cell. The E-UTRAN FDD Cell tab is displayed.

e)

Click

(Edit) on the toolbar. The Confirm dialog box is displayed,

indicating whether to apply for mutex right for the node. f)

Click OK. The permitted parameters on the E-UTRAN FDD Cell tab can be modified.

g)

Set DRX Switch for GBR and DRX Switch for NGBR to Open, see Figure 4-22.

Figure 4-22


E-UTRAN FDD Cell Tab


51

ZTE LTE FDD ANR Feature Guide (Save) on the toolbar.

h)

Click

i)

In the NE Management tab, select the eNodeB agent node. Then click the Configuration Management button on the upper left of the Configuration Management tab, and select Data Synchronization from the drop-down list. The Data Synchronization dialog box is displayed, see Figure 4-23.

Figure 4-23

j)

Data Synchronization Dialog Box

Select the NE to which the configuration data is to be distributed, which is eNodeB 3056 in this example. Set the synchronization parameters, and then click Synchronize. The Confirm dialog box is displayed, prompting for the verification code.

k)

Enter the verification code, and click OK. The system starts to synchronize all parameters to eNodeB. When 100% is displayed in the Progress column, it indicates that the synchronization is completed.



52


4.3.4 Disabling the ANR Function 1.

Select an ANR policy on the FDD SON Control page and click

to

display a new FDD SON Control page. Then set Service Switch as Close, see Figure 4-24. 2.

Send the new ANR policy to the eNodeB which need to disable ANR function, as shown in Figure 4-8.

Figure 4-24

3.

Or you can click

Closing the SON Switch

on the FDD ANR Policy page to display a new

FDD ANR Policy dialog box. Then set the ANR Enable parameter to Disable (See Figure 4-25), and send the new ANR policy to eNodeB or cell which need to disable the ANR function, as shown in Figure 4-14 and Figure 4-15.



53


Closing the ANR Enable Switch

5 Related Counters, KPI, and Alarms 5.1 Related Counters Table 5-1

SN 1

Counter No. C373474920

Related Counters

Description Number of Different Detect Cell

Unit times

Intra RAT 2

C373474921

3

C373474922

Number of Report Detect Cell Intra

times

RAT Number of ReportCGI by UE Intra

times

RAT 4

C373474923

Number of ReportCGI by Period

times

Intra RAT 5

C373474924

Number of Successful ReportCGI

times

by Period Intra RAT 6

C373474925

Number of Report Neighbor

times

Relation Addition to OMC Intra RAT 7

C373474942


Number of Different Detect Cell

times


54

ZTE LTE FDD ANR Feature Guide SN

Counter No.

Description

Unit

between LTE and UTRAN 8

C373474943

Number of Report Detect Cell

times


C373474944

Number of ReportCGI by UE

times


C373474945

Number of ReportCGI by Period between LTE and UTRAN

times

11

C373474946


times

by Period between LTE and UTRAN 12

C373474947


times

Relation Addition to OMC between LTE and UTRAN 13

C373474948


times

between LTE and CDMA 14

C373474949


times


C373474950


times


C373474951


times


C373474952


times

by Period between LTE and CDMA 18

C373474953


times

Relation Addition to OMC between LTE and CDMA 19

C373474954


times

between LTE and GSM 20

C373474955


times


C373474956


times


C373474957


times


C373474958


times

by Period between LTE and GSM 24

C373474959


times

Relation Addition to OMC between LTE and GSM ZTE Confidential Proprietary


55

ZTE LTE FDD ANR Feature Guide SN 25

Counter No. C373474960

Description Number of Successful Normal

Unit times

Neighbor Cell Addition Intra RAT 26

C373474961

Number of Successful Handover to

times

Temporary Neighbor Cell Intra RAT 27

C373474962

Number of Failed Handover to

times

Temporary Neighbor Cell Intra RAT 28

C373474963


times

Relation Deletion to OMC Intra RAT 29

C373474964

Number of Successfully Deleted

times

Normal Neighbor Cell Intra RAT 30

C373474965

Number of Successful Addition of

times

Normal Neighbor Cell between LTE and UTRAN 31

C373474966


times

Temporary Neighbor Cell between LTE and UTRAN 32

C373474967


times

Temporary Neighbor Cell between LTE and UTRAN 33

C373474968


times

Relation Deletion to OMC between LTE and UTRAN 34

C373474969


times

Normal Neighbor Cell between LTE and UTRAN 35

C373474970


times

Normal Neighbor Cell between LTE and CDMA 36

C373474971

Number of Successful Handover to Temporary Neighbor Cell between

times

LTE and CDMA 37

C373474972


times

Temporary Neighbor Cell between LTE and CDMA 38

C373474973


times

Relation Deletion to OMC between LTE and CDMA 39

C373474974


times

Normal Neighbor Cell between LTE ZTE Confidential Proprietary


56

ZTE LTE FDD ANR Feature Guide SN

Counter No.

Description

Unit

and CDMA 40

C373474975


times

Normal Neighbor Cell between LTE and GSM 41

C373474976


times

Temporary Neighbor Cell between LTE and GSM 42

C373474977


times

Temporary Neighbor Cell between LTE and GSM 43

C373474978


times

Relation Deletion to OMC between LTE and GSM 44

C373474979


times

Normal Neighbor Cell between LTE and GSM 45

C373474980

46

C373474981

Number of Temporary Neighbor

unit

Cell Intra RAT Number of Temporary Neighbor

unit

Cell between LTE and UTRAN 47

C373474982


unit

Cell between LTE and CDMA 48

C373474983


unit

Cell between LTE and GSM 49

C373692700

Number of Intra-freq Neighbour Cell

times

Reported by UE 50

C373692701

Number of Inter-freq Neighbour Cell

times

Reported by UE 51

C373692702

Number of

times

Inter-RAT(LTE->UTRAN)Neighbour Cell Reported by UE 52

Number of C373692703

times

Inter-RAT(LTE->CDMA)Neighbour Cell Reported by UE

53

C373692704

Number of

times

Inter-RAT(LTE->GSM)Neighbour Cell Reported by UE



57


5.2 Related KPI None

5.3 Related Alarms None

6 Abbreviations rd

3GPP

3 Generation Partnership Project

BB

Base Band

BBU

Base Band processing Unit

RRU

Remote Radio Unit

BCCH

Broadcast Control Channel

ANR

Automatic Neighbor Relation

CGI

Cell Global Identity

DRX

Discontinuous Reception

ECGI

E-UTRAN Cell Global Identity

eNodeB

E-UTRAN NodeB

CN

Core Network

HO

Handover

LTE

Long Term Evolution

NR

Neighbor Relation

NRT

Neighbor Relation Table

OMC

Operations & Maintenance Centre

PCI

Physical Cell Identity

PLMN

Public Land Mobile Network

RAT

Radio Access Technology

RLF

Radio Link Failure

RRC

Radio Resource Control

GERAN

GSM Edge Radio Access Network

GSM

Global System for Mobile communications

MS/UE

Mobile Station/User Equipment



58

ZTE LTE FDD ANR Feature Guide MME

Mobility Management Entity

S1

Interface Between eNodeB and MME

TAC

Tracking Area Code

TCI

Target Cell Identity

TNL

Transport Network Layer

X2

Interface Between eNodeBs

DL

Down Link

UL

Up Link

SON

Self-configuring and Self-optimizing Network

ANR

Automatic Neighbour Relation

NRT

Neighbour Relation Table

ECGI

Evolved Cell Global Identifier

DRX

Discontinuous Reception

CEU

Cell Edge UE

CCU

Cell Center UE

MCM

Measure Control Management

EMS

Equipment Management System

OMM

Operation & Maintenance Module

EMB

Enterprise Message Bean

OCF

Optimization Collection Function



59

Zte Lte Fdd Anr Feature Guide v1 0

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