10 WCDMA Radio Network Mobility Counter and KPI

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HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

HUAWEI Confidential

Security Level:

WCDMA Mobility Counter System and KPI

ISSUE 1.0

HUAWEI TECHNOLOGIES CO., LTD. Page 2HUAWEI Confidential

l WCDAM handover can be divided into different categories.

l Different counters and KPI are used for different handover.

http://www.huawei.com

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l Upon completion of this course, you will be able to:

[Know different handover counter system

[Know different handover KPI


Mobility Counter and KPI System

l Soft handover

[ Softer handover

l Hard handover

[ Inter-frequency hard handover

[ Intra-frequency hard handover

l Inter RAT handover

[ Inter-RAT CS handover

[ Inter-RAT PS handover

l HSDPA handover

[ Handover between HSDPA cells

[ Handover between HSDPA and DCH

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Chapter 1 Soft Handover Counter and KPI Chapter 1 Soft Handover Counter and KPI

Chapter 2 Hard Handover Counter and KPIChapter 2 Hard Handover Counter and KPI

Chapter 3 InterChapter 3 Inter--RAT Handover Counter and KPIRAT Handover Counter and KPI

Chapter 4 HSDPA Handover Counter and KPIChapter 4 HSDPA Handover Counter and KPI


Soft Handover Counter System

l Soft handover procedure

[ Measurement report: 1A, 1B,1C, 1D

[ Active set update & Active set update complete:

− 1A, 1B,1C

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l Soft handover (RNC)

[ Attempt: VS.SHO.Att.RNC at point B

[ Success: VS.SHO.Succ at point C

[ UEs with One RL: VS.SHO.AS.1

[ UEs with Two RLs Combined: VS.SHO.AS.2Softer

[ UEs with Two RLs Uncombined: VS.SHO.AS.2Soft

[ UEs with Three RLs Combined: VS.SHO.AS.3Softer

[ UEs with Three RLs and Two of them Combined: VS.SHO.AS.3Soft2Softer

[ UEs with Three RLs Uncombined: VS.SHO.AS.3Soft

[ Call Drops due to Soft Handover: VS.SHO.Drop.RNC


l Soft handover (Cell)

[ Soft handover based on different services

− VS.SHO.AMR.AttOut

− VS.SHO.CS64.AttOut

− VS.SHO.PS64.AttOut



[ RL Additions or deletions for Soft Handover

− SHO.AttRLAddUESide at point B SHO.SuccRLAddUESide at point C

− SHO.AttRLDelUESide at point B SHO.SuccRLDelUESide at point C


− VS.SHO.AMR.SuccOut

− VS.SHO.CS64.SuccOut

− VS.SHO.PS64.SuccOut



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l Soft handover (Cell)

[ Other related counters:

− SHO.FailRLAddUESide.NoReply



Soft Handover KPI

l Soft Handover Success Rate

[Formula

[Measurement scope:

− RNC & Cell

[Description

− This KPI can be used to evaluate the soft handover success Rate in one RNC or one cell, which includes softer handover.

%100*_mptSHOASUAtteessSHOASUSuccSRSHO =

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Soft Handover KPI

l Soft Handover Success Rate

[ Counters (RNC)

− SHOASUAttempt: VS.SHO.Att.RNC

− SHOASUSuccess: VS.SHO.Succ

[ Counters (Cell)

− SHOASUAttempt:

▪ SHO.AttRLAddUESide

▪ SHO.AttRLDelUESide

− SHOASUSuccess:

▪ SHO.SuccRLAddUESide

▪ SHO.SuccRLDelUESide


Soft Handover KPI

l Average Active Set Size

[Formula

[Measurement scope:

− RNC

[Description

− This KPI can be used to evaluate the soft handover percentage

%100*3*2*1* 321

++

=UE

UEUEUESHR

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Soft Handover KPI

l Average Active Size

[ Counters

− UE1: VS.SHO.AS.1

− UE2: VS.SHO.AS.2Softer & VS.SHO.AS.2Soft

− UE3: VS.SHO.AS.3Softer, VS.SHO.AS.3Soft & VS.SHO.AS.3Soft2Softer

− UE: VS.SHO.AS.1+ VS.SHO.AS.2Softer+VS.SHO.AS.2Soft+

VS.SHO.AS.3Softer+VS.SHO.AS.3Soft + VS.SHO.AS.3Soft2Softer






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Hard Handover Counter System

l Hard handover procedure

[ Inter-frequency hard handover

[ Intra-frequency hard handover


Inter-frequency Hard Handover Counter System

l Inter-frequency Hard handover (RNC)

[ Inter-Frequency Hard Handover Requests: VS.HHO.InterFreq.Att.RNC at point B

[ Successful Inter-Frequency Hard Handovers: VS.HHO.InterFreq.Succ.RNC at point C

l Inter-frequency Hard handover (Cell)

[ Hard Handover Requests: VS.HHO.InterFreq.AttOut at point B

[ Successful Hard Handovers: VS.HHO.InterFreq.SuccOut at point C

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l Inter-frequency hard handover execution failure, due to:[ configuration unsupported: VS.HHO.InterFreqOut.CfgUnsupp

[ physical channel failure: VS.HHO.InterFreqOut.PyhChFail

[ Incompatible simultaneous reconfiguration: VS.HHO.InterFreqOut.FailUSR

[ cell update occurred: VS.HHO.InterFreqOut.CellUpdt

[ invalid configuration: VS.HHO.InterFreqOut.CfgInvalid



l Inter-frequency Hard handover Failure Analysis (Cell)[ VS.HHO.InterFreqOut.NoReply

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l Inter-frequency Hard handover Failure Analysis (Cell)

[ Code resource allocation failure: VS.HHO.InterFreqOut.DLCodeRej

[ UL admission rejection :VS.HHO.InterFreqOut.ULAdmsnDeny

[ DL admission rejected: VS.HHO.InterFreqOut.DLAdmsnDeny


Hard Handover Counter System

l Hard handover (RNC)

[ Hard Handover Requests: VS.HHO.Att.RNC at point B

[ Successful Hard Handovers: VS.HHO.Succ.RNC at point C

l Hard handover based on different services (Cell)[ VS.HHO.AMR.AttOut

[ VS.HHO.CS64.AttOut

[ VS.HHO.PS64.AttOut



[ VS.HHO.AMR.SuccOut

[ VS.HHO.CS64.SuccOut

[ VS.HHO.PS64.SuccOut



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Inter-frequency hard handover KPI

l Inter-frequency Hard Handover Success Rate

[Formula

[Measurement scope:

− RNC & Cell

[Description

− This KPI can be used to evaluate the inter-frequency hard handover success Rate in one RNC.

%100_ ×=temptInterHHOAtccessInterHHOSuSRInterHHO


Inter-frequency hard handover KPI

l Inter-frequency Hard Handover Success Rate

[ Counters (RNC)

− InterHHOAttempt (RNC): VS.HHO.InterFreq.Att.RNC

− InterHHOSuccess (RNC): VS.HHO.InterFreq.Succ.RNC

[ Counters (Cell)

− InterHHOAttempt (Cell): VS.HHO.InterFreq.AttOut

− InterHHOSuccess (Cell): VS.HHO.InterFreq.SuccOut

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Inter-RAT Handover Counter System

l CS Inter-RAT handover procedure[ CS handover from WCDMA to GSM

[ This procedure can be divided into two steps:

− Handover preparation:

▪ From point A to point B

− Handover execution

▪ From point C to point D

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l CS Inter-RAT handover counters (RNC)

[ Preparation request: VS.SRELOC.AttPrep.IRHOCS at point A

[ Preparation success: VS.SRELOC.SuccPrep.IRHOCS at point B

[ Execution request: VS.IRATHO.AttCSOut.RNC at point C

[ Execution success: VS.IRATHO.SuccCSOut.RNC at point D

l CS Inter-RAT handover counters (Cell)

[ Preparation request: IRATHO.AttRelocPrepOutCS at point A

[ Preparation success: IRATHO.SuccRelocPrepOutCS at point B

[ Execution request: IRATHO.AttOutCS at point C

[ Execution success: IRATHO.SuccOutCS at point D



l CS Inter-RAT handover preparation failure (RNC) is due to

[ No response for Relocation Required at point A in the figure 1:

VS.SRELOC.Fail.IRATCSOutNRpl

[ Failure response for Relocation Required at point A in the figure 2:

VS.SRELOC.FailPrep.IRATCSOut

Figure1 Figure2

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l CS Inter-RAT handover preparation failure (RNC)

[ Failure response for Relocation Required: VS.SRELOC.FailPrep.IRATCSOut

− Due to Relocation Cancelled: VS.SRELOC.Fail.IRATCSOutCanc

− Due to TRELOCalloc Expiry : VS.SRELOC.Fail.IRATCSOutTexp

− Due to Relocation Failure in Target CN/RNC or Target System : VS.SRELOC.Fail.IRATCSOutTfai

− Due to Unknown Target RNC:VS.IRATHO.PrepFailCSOut.UkwnRNC

− Due to No Resource Available : VS.IRATHO.PrepFailCSOut.NoRsrc

− Due to Requested Information Not Available: VS.IRATHO.PrepFailCSOutReqinfnotavai



l CS Inter-RAT handover preparation failure (Cell)

[ Failure response for Relocation Required, due to:

− TRELOCalloc expiry: IRATHO.FailRelocPrepOutCS.TAlExp

− Relocation Failure in Target CN/RNC or Target System: IRATHO.FailRelocPrepOutCS.TgtFail

− Relocation not supported in Target RNC or Target system: IRATHO.FailRelocPrepOutCS.ReloNoSup

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l CS Inter-RAT handover execution failure is due to

[ Configuration Unsupported :

− VS.IRATHO.FailCSOut.CfgUnRNC (RNC)

− IRATHO.FailOutCS.CfgUnsupp (Cell)

[ Physical Channel Failure :

− VS.IRATHO.FailCSOut.PhyFaRNC (RNC)

− IRATHO.FailOutCS.PhyChFail (Cell)



l PS Inter-RAT handover procedure[ PS handover from WCDMA to GPRS

[ This procedure can be divided into two steps:

− Handover preparation:

▪ From point A to point B

− Handover execution

▪ From point B to point C

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l PS Inter-RAT handover counters (RNC)

[ Preparation request: VS.IRATHO.EvalPSOutUTRAN.RNC at point A

[ Preparation success and Execution request: VS.IRATHO.AttPSOutUTRAN.RNC at point B

[ Execution success: VS.IRATHO.SuccPSOutUTRAN.RNC at point C

l PS Inter-RAT handover counters (Cell)

[ Execution request: VS.IRATHO.AttOutPSUTRAN at point B

[ Execution success: VS.IRATHO.SuccOutPSUTRAN at point C



l PS Inter-RAT handover failure counters (RNC)

[ No response for Cell Change Order from UTRAN, and then no Iu release command

from CN: VS.IRATHO.PSOut.NoReply

[ Failure response from UE: VS.IRATHO.PSOut.Fail

− Configuration unacceptable: VS.IRATHO.PSOut.CfgUnsup

− Physical Channel Failure: VS.IRATHO.PSOut.PhyCHFail

− Unspecified: VS.IRATHO.PSOut.Unpec

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Inter-RAT Handover KPI

l CS Inter-RAT Handover Preparation Success Rate (WCDMA to GSM)

[Formula

[Measurement scope:

− RNC & Cell

[Description

− This KPI can be used to evaluate the CS inter-RAT preparation handover success Rate in one RNC

%100*_tPpHOAttempCSInterRATsPpHOSuccesCSInterRATSRATPpHOCSInterreR =



l CS Inter-RAT Handover Preparation Success Rate (WCDMA to GSM)

[ Counters

− CSInterRATPpHOAttempt:

VS.SRELOC.AttPrep.IRHOCS (RNC)

IRATHO.AttRelocPrepOutCS (Cell)

− CSInterRATPpHOSuccess

VS.SRELOC.SuccPrep.IRHOCS (RNC)

IRATHO.SuccRelocPrepOutCS (Cell)

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l CS Inter-RAT Handover Execution Success Rate (WCDMA to GSM)

[Formula

[Measurement scope:

− RNC & Cell

[Description

− This KPI can be used to evaluate the CS inter-RAT handover success Rate in one RNC

%100*_HOAttemptCSInterRATHOSuccessCSInterRATSRHOCSInterRAT =



l CS Inter-RAT Handover Execution Success Rate (WCDMA to GSM)

[ Counters

− CSInterRATHOAttempt:

VS.IRATHO.AttCSOut.RNC (RNC)

IRATHO.AttOutCS (Cell)

− CSInterRATHOSuccess

VS.IRATHO.SuccCSOut.RNC (RNC)

IRATHO.SuccOutCS (Cell)

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l PS Inter-RAT Handover Preparation Success Rate (WCDMA to GPRS)

[Formula

[Measurement scope:

− RNC

[Description

− This KPI can be used to evaluate the PS inter-RAT handover prepaRaten success Rate in one RNC

%100_ ×=tOutPpHOAttempPSInterRATsOutPpHOSuccesPSInterRATSRPpHOPSInterRAT out



l PS Inter-RAT Handover Preparation Success Rate (WCDMA to GSM)

[ Counters

− PSInterRATPpHOAttempt (RNC):

VS.IRATHO.EvalPSOutUTRAN.RNC

− PSInterRATPpHOSuccess (RNC)

VS.IRATHO.AttPSOutUTRAN.RNC

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l PS Inter-RAT Handover Execution Success Rate (WCDMA to GPRS)

[Formula

[Measurement scope:

− RNC & Cell

[Description

− This KPI can be used to evaluate the PS inter-RAT handover success Rate in one RNC, which includes handover out from this

RNC

%100_ ×=utHOAttemptOPSInterRATutHOSuccessOPSInterRATSRHOPSInterRAT out



l PS Inter-RAT Handover Execution Success Rate (WCDMA to GSM)

[ Counters

− PSInterRATHOAttempt:

VS.IRATHO.AttPSOutUTRAN.RNC (RNC)

IRATHO.AttOutPSUTRAN (Cell)

− PSInterRATHOSuccess:

VS.IRATHO.SuccPSOutUTRAN.RNC (RNC)

IRATHO.SuccOutPSUTRAN (Cell)

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HSDPA Handover KPI

l HS-DSCH Service Cell Change Success Rate with SHO

[Formula

[Measurement scope:

− Cell

[Description

− This KPI can be used to evaluate the soft handover success Rate of HSDPA service in a cell.

%100×=empNumHtoHSHOAttcessNumHtoHSHOSuccessRatioHtoHSHOSuc

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HSDPA Handover KPI


[Counters

− HtoHSHOAttempNum: VS.HSDPA.CellChg.AttOutIntraRNC

[Measurement point:

− The measurement is triggered at point A as shown in the figure when the RNC

sends a PHYSICAL CHANNLE RECONFIGRATION message to a UE for HSDPA serving cell change between two intra-frequency cells.

− RNC measures this item in the original cell


HSDPA Handover KPI


[Counters

− HtoHSHOSuccessNum: VS.HSDPA.CellChg.SuccOutIntraRNC

[Measurement point:

− The measurement is triggered at point B as shown in the figure when the RNC

receives from a UE a PHYSICAL CHANNLE RECFG COMPLETE message

− RNC measures this item in the original cell

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HSDPA Handover KPI

l Inter-frequency Hard Handover Success Rate (HSDPA to HSDPA)

[Formula

[Measurement scope:

− RNC

[Description

− This KPI can be used to evaluate the inter-frequency hard handover success Rate of HSDPA service in a cell

%100×=mHOAttempNuHtoHInterH

umHOSuccessNHtoHInterHatioHOSuccessRHtoHInterH


HSDPA Handover KPI


[Counters

− HtoHInterHHOAttemptNum:

VS.HSDPA.HHO.AttOutIntraRNCInterFreq

[ Measurement point:

− The measurement is triggered at point A as shown in the figure.

− When the RNC sends a PHYSICAL CHANNLE RECONFIGRATION message to a UE for an inter-frequency hard handover from HS-DSCH to HS-DSCH, the RNC measures this item in the original cell.

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HSDPA Handover KPI


[Counters

− HtoHInterHHOSuccessNum:

VS.HSDPA.HHO.SuccOutIntraRNCInterFreq

[Measurement point:

− The measurement is triggered at point B as shown in the figure.

− When the RNC receives from a UE a PHYSICAL CHANNLE RECFG COMPLETE message indicating that the handover is an inter-frequency hard handover from HS-DSCH to HS-DSCH, the RNC measures this item in the original cell


HSDPA Handover KPI

l Channel Handover Success Rate（HSDPA to DCH）

[Formula

[Measurement scope:

− Cell

[Description

− This KPI can be used to evaluate the channel handover success Rate when UE handover from HSDPA to DCH in a cell.

%100×=mpNumHtoRHOAtteessNumHtoRHOSuccessRatioHtoRHOSucc

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HSDPA Handover KPI


[Counters

− HtoRHOAttempNum:

VS.HSDPA.ChR.HSDSCHtoDCH.Att

[Measurement point:

− The measurement is triggered at point A as shown in the figure

− the RNC measures this item in the serving cell when sending a RADIO BEARER RECONFIGURATION message to a UE during a DCCC or RAB MODIFY procedure

− Note : the Transport channels change at the same cell


HSDPA Handover KPI


[Counters

− HtoRHOSuccessNum:

VS.HSDPA.ChR.HSDSCHtoDCH

[Measurement point:

− The measurement is triggered at point A1 as shown in the figure

− When the RNC receives RADIO BEARER RECONFIGURATION COMPLETE message from UE, which indicates a handover from HSDSCH to DCH during a DCCC or RAB MODIFY procedure, the RNC measures this item in a HSDPA cell the UE camps on


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HSDPA Handover KPI

l Channel Handover Success Rate（DCH to HSDPA）

[Formula

[Measurement scope:

− Cell

[Description

− This KPI can be used to evaluate the channel handover success Rate when UE handover from DCH to HSDPA in a cell.

%100×=mpNumRtoHHOAtteessNumRtoHHOSuccessRatioRtoHHOSucc


HSDPA Handover KPI


[Counters

− RtoHHOAttempNum:

VS.HSDPA.ChR.DCHtoHSDSCH.Att

[Measurement point:

− The measurement is triggered at point A as shown in the figure.

− When sending a RADIO BEARER RECONFIGURATION message to a UE during a DCCC or RAB MODIFY procedure , the RNC measures this item in the serving cell of the HSDPA service based on the transport channels the UE occupies before and after the reconfiguration.


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HSDPA Handover KPI


[Counters

− RtoHHOSuccessNum:

VS.HSDPA.ChR.DCHtoHSDSCH

[Measurement point:

− The measurement is triggered at point A1 as shown in the figure

− When receiving RADIO BEARER RECONFIGURATION COMPLETE message from UE, which indicating a handover from DCH to HSDSCH during a DCCC or RAB MODIFY procedure at the same cell, RNC measures this item in a HSDPA cell the UE camps on.


HSDPA Handover KPI

l HSDPA Inter-RAT Handover Success Rate (WCDMA to GPRS )

[Formula

[Measurement scope:

− Cell

[Description

− This KPI can be used to evaluate the HSDPA inter-RAT handover success Rate in one cell, from WCDMA to GPRS

%100_ ×=ptRATHOAttemHSDPAInterssRATHOSucceHSDPAInterSRRATHOHSDPAInter

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HSDPA Handover KPI


[ Counters

− HSDPAInterRATHOAttempt:

VS.IRATHO.HSDPA.AttOutPSUTRAN

[Measurement point:

− The measurement is triggered at point B as shown in the figure

− When RNC sends the CELL CHANGE ORDER FROM UTRAN message to UE dut to HSDPA inter-RAT outgoing handover, the measurement is triggered in the original cell


HSDPA Handover KPI


[ Counters

− HSDPAInterRATHOSuccess:

VS.IRATHO.HSDPA.SuccOutPSUTRAN

[Measurement point:

− The measurement is triggered at point D as shown in the figure

− When RNC sends Iu Release Complete to CN due to HSDPA handover, the measurement is triggered in the original cell.

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Other Mobility KPI

l Numbers of Soft Handovers Decided for Different Traffic Classes (Cell)[ VS.SHO.service.AttOut, VS.SHO.service.SuccOut

[ Notes: Service could be AMR, CS64, PS64, PS128, PS144, PS384

l Number of SHO Event Measurement Reports (Cell)[ VS.RRC.MrRpt.1x

[ VS.RRC.MrRpt.1A. Detect

[ Notes:1x could be 1A, 1B, 1C or 1D

l Numbers of Requested Outgoing Hard Handovers by Different Traffic Classes (Cell)[ VS.HHO.service.AttOut, VS.HHO.service.SuccOut

[ Notes: Service could be AMR, CS64, PS64, PS128, PS144, PS384

Other related CountersOther related Counters


Summary

l This slide introduces WCDMA mobility KPI and related counters:

[Soft handover counter and KPI

[Hard handover counter and KPI

[ Inter-RAT handover counter and KPI

[HSDPA handover counter and KPI

SummarySummary

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10 WCDMA Radio Network Mobility Counter and KPI