2.WCDMA Mobility Counters and KPIs Introduction

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WCDMA Mobility Counters and KPIs Introduction RAN 10 - issue 1.2 www.huawei.com

HUAWEI TECHNOLOGIES CO., LTD.

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WCDMA handover can be divided into

different categories. Different counters and KPI are used for

different handovers.


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

Know different handover counter system Know different handover KPI


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Mobility Counters and KPI System

Soft handover Softer handover

Hard handover Inter-frequency hard handover Intra-frequency hard handover

Inter RAT handover Inter-RAT CS handover Inter-RAT PS handover

HSDPA handover Handover between HSDPA cells Handover between HSDPA and R99

HSUPA handover Handover between HSUPA cells Handover between HSUPA and R99


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Chapter 1 Soft Handover Counters and KPIs Chapter 2 Hard Handover Counters and KPIs Chapter 3 InterInter-RAT Handover Counters and KPIs Chapter 4 HSDPA Handover Counters and KPIs Chapter 5 HSUPA Handover Counters and KPIs


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Soft Handover Counter System

Soft handover procedure

Measurement report: 1A, 1B, 1C, 1D Active set update & Active set update complete: − 1A, 1B, 1C, (1D)


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When receiving an event 1D report, which includes information about only one cell, the RNC knows that the quality of this cell is better than that of the serving cell and takes one of the following actions: If the reported cell is in the monitored set, the RNC decides a soft handover and adds the cell to the active set. If the number of cells in the active set has reached the maximum value, the RNC decides a soft handover and replaces the worst cell in the active set with the reported cell. The RNC decides whether the intra-frequency hard handover conditions are met. If the conditions are met, the RNC initiates an intrafrequency hard handover.

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Soft handover (RNC) SHO Attempts: VS.SHO.Att.RNC at point B SHO Successes: VS.SHO.Succ at point C Softer HO Attempts: VS.SoHO.ASU.AttRNC at point B Softer HO Successes: VS.SoHo.Succ at point C − Note: The softer handover items above are contained in the soft handover items Number of Call Drops due to SHO: VS.SHO.Drop.RNC − After the RNC sends an ACTIVE SET UPDATE message to a UE during soft handover, it starts the timer to wait for the response from the UE. If it does not receive any response upon expiry of the timer, the RNC releases this RRC connection, which results to call drop.


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Soft handover (RNC) 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 UEs with Four RLs: VS.SHO.AS.4 UEs with Five RLs: VS.SHO.AS.5 UEs with Six RLs: VS.SHO.AS.6


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Soft handover (Cell) Soft handover based on different services − VS.SHO.AMR.AttOut

− VS.SHO.AMR.SuccOut

− VS.SHO.CS64.AttOut

− VS.SHO.CS64.SuccOut

− VS.SHO.PS64.AttOut

− VS.SHO.PS64.SuccOut







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


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Soft Handover KPI

Soft Handover Success Rate

Formula

SHO _ SR =

SHOASUSuccess *100% SHOASUAttempt

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.


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Soft Handover KPI

Soft Handover Success Rate

Counters (RNC) (P7) − SHOASUAttempt: VS.SHO.Att.RNC − SHOASUSuccess: VS.SHO.Succ Counters (Cell) (P9) − SHOASUAttempt: ▪ SHO.AttRLAddUESide ▪ SHO.AttRLDelUESide − SHOASUSuccess: ▪ SHO.SuccRLAddUESide ▪ SHO.SuccRLDelUESide


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Soft Handover KPI

Average Active Set Size

Formula:

 UE1 *1 + UE 2 * 2 + UE 3 * 3  ASS =   UE  

Measurement scope: − RNC Description − This KPI can be used to evaluate the average active set size


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Soft Handover KPI

Average Active Size Counters (P8) − 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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Number of Measurement Reports

Number of SHO Event Measurement Reports (Cell)

VS.RRC.MrRpt.1A VS.RRC.MrRpt.1B VS.RRC.MrRpt.1C VS.RRC.MrRpt.1D

The measurement is triggered at point A as shown in the figure, when the RNC receives a MEASUREMENT REPORT message from the UE with the event type of 1A, 1B, 1C or 1D and the measurement object of neighboring cell. In this case, the RNC measures the item in the best cell that the UE camps on.


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Chapter 1 Soft Handover Counter and KPI Chapter 2 Hard Handover Counter and KPI Chapter 3 InterInter-RAT Handover Counter and KPI Chapter 4 HSDPA Handover Counter and KPI Chapter 5 HSUPA Handover Counter and KPI


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Hard Handover Counter System Hard handover procedure

Inter-frequency hard handover Intra-frequency hard handover


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The decision of intra-frequency hard handover is based on event 1D, which is an intra-frequency measurement event. When the RNC decides to initiate a hard handover, it sends a reconfiguration message such as PHYSICAL CHANNEL RECONFIGURATION message, or a TRANSPORT CHANNEL RECONFIGURATION message, or a RADIO BEARER RECONFIGURATION or a RADIO BEARER RELEASE message to the UE. If the target cell receives a reconfiguration complete message such as PHYSICAL CHANNEL RECONFIGURATION COMPLETE message, or a TRANSPORT CHANNEL RECONFIGURATION COMPLETE message, or a RADIO BEARER RECONFIGURATION COMPLETE or a RADIO BEARER RELEASE COMPLETE from the UE, it indicates that the hard handover succeeds. If the source cell receives a reconfiguration failure message such as PHYSICAL CHANNEL RECONFIGURATION FAILURE, or a TRANSPORT CHANNEL RECONFIGURATION FAILURE message, or a RADIO BEARER RECONFIGURATION FAILURE or a RADIO BEARER RELEASE FAILURE, it indicates that the hard handover fails.

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Intra-frequency Hard Handover Counter System

Intra-frequency Hard handover (RNC) Intra-Frequency Hard Handover Requests: VS.HHO.Att.IntraFreq.RNC at point B Successful Intra-Frequency Hard Handovers: VS.HHO.Succ.IntraFreq.RNC at point C

Intra-frequency Hard handover (Cell) Intra NodeB Hard Handover Requests: VS.HHO.AttOutIntraNodeBIntraFreq at point B Intra NodeB Successful Hard Handovers: VS.HHO.SuccOutIntraNodeBIntraFreq at point C Inter NodeB Hard Handover Requests: VS.HHO.AttOutInterNodeBIntraRNCIntraFreq at point B Inter NodeB Successful Hard Handovers: VS.HHO.SuccOutInterNodeBIntraRNCIntraFreq at point C Inter RNC Hard Handover Requests: VS.HHO.AttOutInterRNCIntraFreqIur at point B Inter RNC Successful Hard Handovers: VS.HHO.SuccOutInterRNCIntraFreqIur at point C


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Intra NodeB: Source and Target cell belong in the same NodeB Inter NodeB: Source and Target cell belong in different NodeBs but in the same RNC Inter RNC: Source and Target cell belong in different RNCs

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Inter-frequency Hard Handover Counter System

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

Inter-frequency Hard handover (Cell) Hard Handover Requests (outgoing): VS.HHO.InterFreq.AttOut at point B Successful Hard Handovers (outgoing): VS.HHO.InterFreq.SuccOut at point C Hard Handover Requests (incoming): VS.HHO.InterFreqIn.Att at point B Successful Hard Handovers (incoming): VS.HHO.InterFreqIn.Succ at point C


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Inter-frequency Hard Handover Counter System Inter-frequency Hard Handover execution failure (Cell), 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


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Configuration Unsupported: The UE does not support the configuration assigned in “Physical Channel Reconfiguration” message. Incompatible simultaneous reconfiguration: This reason refers to the case when the reconfiguration procedure is simultaneous with SRNS relocation and the new configuration is not supported by the UE. (See TS 25.331) Invalid configuration: Due to some IE in the message “Physical Channel Reconfiguration” is invalid for the UE.

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Inter-frequency Hard Handover execution failure (Cell) VS.HHO.InterFreqOut.NoReply


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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 Note: The Code resource allocation failure counters are included in the DL admission rejected counters


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Hard Handover Counter System

Hard handover (RNC)

Hard Handover Requests (total: Inter + Intra): VS.HHO.Att.RNC at point B Successful Hard Handovers (total: Inter + Intra): VS.HHO.Succ.RNC at point C Hard handover (Cell)

Hard Handover requests, incoming (total: Inter + Intra): VS.HHO.Att.In at point B Successful Hard Handovers, incoming (total: Inter + Intra): VS.HHO.Succ.In at point C


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Hard Handover KPI

Inter-frequency Hard Handover Success Rate

Formula InterHHO _ SR =

InterHHOSuccess × 100% InterHHOAttempt

Measurement scope: − RNC & Cell Description − This KPI can be used to evaluate the inter-frequency hard handover success Rate in one RNC


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Hard Handover KPI

Inter-frequency Hard Handover Success Rate

Counters (RNC) (P18) − InterHHOAttempt (RNC): VS.HHO.InterFreq.Att.RNC − InterHHOSuccess (RNC): VS.HHO.InterFreq.Succ.RNC Counters (Cell) (P18) − InterHHOAttempt (Cell): VS.HHO.InterFreq.AttOut − InterHHOSuccess (Cell): VS.HHO.InterFreq.SuccOut


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Inter-RAT Handover Counter System

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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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

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


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CS Inter-RAT handover preparation failure (RNC) is due to No response for Relocation Required at point A in figure 1: VS.SRELOC.Fail.IRATCSOutNRpl

Failure response for Relocation Required at point A in figure 2: VS.SRELOC.FailPrep.IRATCSOut

Figure1


Figure2

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Inter-RAT Handover Counter System 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 Traffic Load In The Target Cell Higher Than In The Source Cell: VS.SRELOC.Fail.IRATCSOutTOve

− 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


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VS.SRELOC.Fail.IRATCSOutCanc: E.g.: after “Relocation Required” UE hangs-up. Then CN sends Relocation Preparation Failure with IE: “Relocation Canceled”. VS.SRELOC.Fail.IRATCSOutTfai: For example, when RNC sends CS inter-RAT handover preparation to MSC, MSC transfers this request to BSC, but maybe BSC has some problem, so it fails to prepare the resources for the new user, MSC returns CS inter-rat handover preparation failure to RNC with reason Failure in Target CN/RNC. VS.IRATHO.PrepFailCSOut.UkwnRNC: Unknown target RNC in this case is the 2G BSC. This reason could occur if the LAC of the target cell is not configured in the MSC. VS.IRATHO.PrepFailCSOutReqinfnotavai: For example, RNC tells BSC about voice encryption mode, but GSM doesn't support this kind of voice encryption mode; in general, this case seldom happens.

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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

− Traffic Load In The Target Cell Higher Than In The Source Cell: IRATHO.FailRelocPrepOutCS.HigherTrafficLod


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For the item IRATHO.FailRelocPrepOutCS.TAlExp, the RNC fails to receive a response upon expiry of the timer (at point A as shown in the figure) from the CN during the CS domain outgoing inter-RAT handover. The RNC measures the item according to the failure cause in the best cell that the UE camps on. For the items IRATHO.FailRelocPrepOutCS.TgtFail, IRATHO.FailRelocPrepOutCS.ReloNoSup and IRATHO.FailRelocPrepOutCS.HigherTrafficLod, the measurement is triggered at point A as shown in the figure. When the RNC receives a RELOCATION PREPARATION FAILURE message, the RNC measures the items according to different failure causes in the best cell that the UE camps on.

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CS Inter-RAT handover execution failure (RNC) Configuration Unsupported: − VS.IRATHO.FailCSOut.CfgUnRNC

Physical Channel Failure: − VS.IRATHO.FailCSOut.PhyFaRNC

CS Inter-RAT handover execution failure (Cell) Configuration Unsupported: − IRATHO.FailOutCS.CfgUnsupp

Physical Channel Failure: − IRATHO.FailOutCS.PhyChFail


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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 D


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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 D

PS Inter-RAT handover counters (Cell) Execution request: IRATHO.AttOutPSUTRAN at point B Execution success: IRATHO.SuccOutPSUTRAN at point D


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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 unsupported: VS.IRATHO.PSOut.CfgUnsup − Physical Channel Failure: VS.IRATHO.PSOut.PhyCHFail − Unspecified: VS.IRATHO.PSOut.Unpec


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VS.IRATHO.PSOut.NoReply: After RNC sends “Cell Change Order From UTRAN” a timer starts (SET STATETIMER: RelocIuRelCmdTmr). If the timer expires and RNC will not receive “Iu Release Command” this counter will count. VS.IRATHO.PSOut.CfgUnsup: UTRAN instructs the UE to perform a non-supported Cell Change Order scenario or to use a nonsupported configuration. VS.IRATHO.PSOut.PhyCHFail: Set up of physical channel failed, usually due to bad radio environment. VS.IRATHO.PSOut.Unpec: Any other reason apart from the previous 2, e.g. protocol error or h/w failure.

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PS Inter-RAT handover failure counters (Cell) Configuration unsupported: IRATHO.FailOutPSUTRAN.CfgUnsupp Physical Channel Failure: IRATHO.FailOutPSUTRAN.PhyChFail


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IRATHO.FailOutPSUTRAN.CfgUnsupp: UTRAN instructs the UE to

perform a non-supported Cell Change Order scenario or to use a non-supported configuration. IRATHO.FailOutPSUTRAN.PhyChFail: Set up of physical channel

failed, usually due to bad radio environment.

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Inter-RAT Handover KPI

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

Formula

CSInterreRATPpHO _ SR =

CSInterRAT PpHOSuccess *100% CSInterRAT PpHOAttempt

Measurement scope: − RNC & Cell Description − This KPI can be used to evaluate the CS inter-RAT preparation handover success Rate in one RNC


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CS Inter-RAT Handover Preparation Success Rate (WCDMA to GSM) Counters (P27) − CSInterRATPpHOAttempt: VS.SRELOC.AttPrep.IRHOCS (RNC) IRATHO.AttRelocPrepOutCS (Cell) − CSInterRATPpHOSuccess: VS.SRELOC.SuccPrep.IRHOCS (RNC) IRATHO.SuccRelocPrepOutCS (Cell)


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

Formula

CSInterRATHO _ SR =

CSInterRATHOSuccess *100% CSInterRATHOAttempt

Measurement scope: − RNC & Cell Description − This KPI can be used to evaluate the CS inter-RAT handover success Rate in one RNC


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CS Inter-RAT Handover Execution Success Rate

(WCDMA to GSM) Counters (P27) − CSInterRATHOAttempt: VS.IRATHO.AttCSOut.RNC (RNC) IRATHO.AttOutCS (Cell)

− CSInterRATHOSuccess: VS.IRATHO.SuccCSOut.RNC (RNC) IRATHO.SuccOutCS (Cell)


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PS Inter-RAT Handover Preparation Success Rate (WCDMA to GPRS) Formula PSInterRAT PpHO _ SRout =

PSInterRAT PpHOSucces sOut × 100% PSInterRAT PpHOAttemp tOut

Measurement scope: − RNC Description − This KPI can be used to evaluate the PS inter-RAT handover preparation success Rate in one RNC


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PS Inter-RAT Handover Preparation Success

Rate (WCDMA to GPRS) Counters (P33) − PSInterRATPpHOAttempt (RNC): VS.IRATHO.EvalPSOutUTRAN.RNC

− PSInterRATPpHOSuccess (RNC) VS.IRATHO.AttPSOutUTRAN.RNC


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PS Inter-RAT Handover Execution Success Rate (WCDMA to GPRS) Formula PSInterRAT HO _ SR out =

PSInterRAT HOSuccessO ut × 100% PSInterRAT HOAttemptO ut

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


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PS Inter-RAT Handover Execution Success Rate

(WCDMA to GPRS) Counters (P33) − 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

HS-DSCH Service Cell Change Success Rate with SHO

Formula

HtoHSHOSuccessRatio =

HtoHSHOSuccessNum × 100% HtoHSHOAttempNum

Measurement scope: − Cell Description − This KPI can be used to evaluate the soft handover success Rate of HSDPA service in a cell


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HSDPA Handover KPI

HS-DSCH Service Cell Change Success Rate with SHO Counters − HtoHSHOAttempNum: VS.HSDPA.SHO.CellChg.AttOut Measurement point: − The measurement is triggered at point A as shown in the figure, when the RNC sends a PHYSICAL CHANNEL RECONFIGRATION message to a UE in the hard handover procedure. If the serving cell changes, the RNC measures this item in the original serving cell. This item is used to measure changes of serving cells in soft handover procedure instead of hard handover procedure


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HSDPA Handover KPI

HS-DSCH Service Cell Change Success Rate with SHO

Counters − HtoHSHOSuccessNum: VS.HSDPA.SHO.CellChg.SuccOut

Measurement point: − The measurement is triggered at point B as shown in the figure when the RNC receives from a UE a PHYSICAL CHANNEL RECFG COMPLETE message. − RNC measures this item in the original cell


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HSDPA Handover KPI

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

Formula HtoHInterHHOSuccessRatio =

HtoHInterHHOSuccessNum × 100% HtoHInterHHOAttempNum

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


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HSDPA Handover KPI


Counters − HtoHInterHHOAttemptNum: VS.HSDPA.HHO.AttOutInterFreq

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.SuccOutInterFreq

Measurement point: − The measurement is triggered at point B as shown in the figure. − When the RNC receives from a UE a PHYSICAL CHANNEL RECFG COMPLETE message indicating that the handover is an inter-frequency hard handover from HSDSCH to HS-DSCH, the RNC measures this item in the original cell


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HSDPA Handover KPI

（HSDPA to DCH or to FACH）

Channel Handover Success Rate

Formula

HtoRHOSucc essRatio =

HtoRHOSucc essNum × 100% HtoRHOAttempNum

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


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HSDPA Handover KPI



Counters − HtoRHOAttempNum: VS.HSDPA.ChR.HSDSCHtoDCH.Att VS.HSDPA.ChR.HSDSCHtoFACH.Att

Measurement point: − The measurement is triggered at point A as shown in the figure − When the RNC decides to perform a channel handover, it sends a RADIO BEARER RECONFIGURATION message to a UE during the DCCC or RAB MODIFY procedure. In this case, the RNC measures the items in the serving cell of the HSDPA service according to the transport channels of the UE before and after the reconfiguration. The RNC performs the handover of transport channels in the same cell


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HSDPA Handover KPI



Counters − HtoRHOSuccessNum: VS.HSDPA.ChR.HSDSCHtoDCH VS.HSDPA.ChR.HSDSCHtoFACH

Measurement point: − The measurement is triggered at point A1 as shown in the figure − When the RNC receives from a UE a RADIO BEARER RECONFIGURATION COMPLETE message indicating a handover from the HS-DSCH to the DCH or to FACH in the same cell during the DCCC or RAB MODIFY procedure. In this case, the RNC measures this item in the HSDPA cell that the UE camps on


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HSDPA Handover KPI

（DCH or FACH to HSDPA）


Formula

RtoHHOSuccessRatio =

RtoHHOSuccessNum × 100% RtoHHOAttempNum

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


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HSDPA Handover KPI



Counters − RtoHHOAttempNum: VS.HSDPA.ChR.DCHtoHSDSCH.Att VS.HSDPA.ChR.FACHtoHSDSCH.Att

Measurement point: − The measurement is triggered at point A as shown in the figure − When the RNC decides to perform a channel handover, it sends a RADIO BEARER RECONFIGURATION message to a UE during the DCCC or RAB MODIFY procedure. In this case, the RNC measures the items in the serving cell of the HSDPA service according to the transport channels of the UE before and after the reconfiguration. The RNC performs the handover of transport channels in the same cell


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HSDPA Handover KPI



Counters − RtoHHOSuccessNum: VS.HSDPA.ChR.DCHtoHSDSCH VS.HSDPA.ChR.FACHtoHSDSCH

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 or FACH 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


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HSDPA Handover KPI

HSDPA Inter-RAT Handover Success Rate (WCDMA to GPRS ) Formula HSDPAInter RATHO _ SR =

HSDPAInter RATHOSucce ss × 100 % HSDPAInter RATHOAttem pt

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


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HSDPA Handover KPI

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


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HSDPA Handover KPI

HSDPA Inter-RAT Handover Success Rate (WCDMA to GPRS ) 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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HSUPA SHO Counters (Cell)

Number of Attempts to Add or Del E-DCH RL for SHO (Cell) Counter: − VS.HSUPA.EDCH.SHO.Att Measurement point: − This measurement is triggered at point B as shown in the figure. When the RNC sends an ACTIVE SET UPDATE message to the UE and an EDCH link is added or deleted for the soft handover, the RNC measures this item in the cell where the EDCH link is added or deleted

Number of Successes to Add or Del E-DCH RL

for SHO (Cell) Counter: − VS.HSUPA.EDCH.SHO.Succ Measurement point: − This measurement is triggered at point C as shown in the figure. When the RNC receives an ACTIVE SET UPDATE CMP message from the UE and an EDCH link is added or deleted during the soft handover, the RNC measures this item in the cell where the EDCH link is added or deleted


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Channel type switch from EDCH to DCH

Number of Attempts to switch channel type from EDCH to DCH in a Cell Counter: − VS.HSUPA.ChR.IntraCell.EDCHtoDCH.Att Measurement point: − This measurement is triggered at point A shown in the figure. The RNC sends a RADIO BEAR RECONFIGURE message to the UE during RAB ASSIGN procedure. If the uplink channel of the UE switches from EDCH to DCH in the same cell, the RNC measures this item in the HSUPA serving cell

Number of Successes to switch channel type

from EDCH to DCH in a Cell Counter: − VS.HSUPA.ChR.IntraCell.EDCHtoDCH.Succ Measurement point: − This measurement is triggered at point A1 shown in the figure. The RNC receives a RB RECFG CMP message from the UE during RAB ASSIGN procedure. If the uplink channel of the UE switches from EDCH to DCH in the same cell, the RNC measures this item in the HSUPA serving cell HUAWEI TECHNOLOGIES CO., LTD.

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Channel type switch from DCH to EDCH

Number of Attempts to switch channel type from DCH to EDCH in a Cell Counter: − VS.HSUPA.ChR.IntraCell.DCHtoEDCH.Att Measurement point: − This measurement is triggered at point A shown in the figure. The RNC sends a RADIO BEAR RECONFIGURE message to the UE during RAB ASSIGN procedure. If the uplink channel of the UE switches from DCH to EDCH in the same cell, the RNC measures this item in the HSUPA serving cell


from DCH to EDCH in a Cell Counter: − VS.HSUPA.ChR.IntraCell.DCHtoEDCH.Succ Measurement point: − This measurement is triggered at point A1 shown in the figure. The RNC receives a RB RECFG CMP message from the UE during RAB ASSIGN procedure. If the uplink channel of the UE switches from DCH to EDCH in the same cell, the RNC measures this item in the HSUPA serving cell HUAWEI TECHNOLOGIES CO., LTD.

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Channel type switch from EDCH to DCH due to Intra-frequency HHO Number of Attempts to switch channel type from EDCH to DCH due to

IntraFreq HHO Counter: − VS.HSUPA.ChR.IntraFreq.EDCHtoDCH.Att Measurement point: − This measurement is triggered at point A shown in the figure. When the RNC sends a RADIO BEARER RECONFIGURATION message to the UE, the RNC measures this item in each cell that the UE camps on before the hard handover if an EDCH-to-DCH intra-frequency hard handover is performed


from EDCH to DCH due to IntraFreq HHO Counter: − VS.HSUPA.ChR.IntraFreq.EDCHtoDCH.Succ Measurement point: − This measurement is triggered at point A1 shown in the figure. When the RNC receives a RADIO BEARER RECONFIGURATION COMPLETE message from the UE, the RNC measures this item in each cell that the UE camps on before the hard handover if an EDCH-toDCH intra-frequency hard handover is performed


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Channel type switch from EDCH to DCH due to Inter-frequency HHO Number of Attempts to switch channel type from EDCH to DCH of InterFreq

HHO Counter: − VS.HSUPA.ChR.InterFreq.EDCHtoDCH.Att Measurement point: − This measurement is triggered at point A shown in the figure. When the RNC sends a RADIO BEARER RECONFIGURATION message to the UE, the RNC measures this item in each cell that the UE camps on before the hard handover if an EDCH-to-DCH inter-frequency hard handover is performed


from EDCH to DCH of InterFreq HHO Counter: − VS.HSUPA.ChR.InterFreq.EDCHtoDCH.Succ Measurement point: − This measurement is triggered at point A1 shown in the figure. When the RNC receives a RADIO BEARER RECONFIGURATION COMPLETE message from the UE, the RNC measures this item in each cell that the UE camps on before the hard handover if an EDCH-toDCH inter-frequency hard handover is performed HUAWEI TECHNOLOGIES CO., LTD.

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Channel type switch from EDCH to FACH Number of Attempts to switch channel type from EDCH to FACH In a Cell Counter: − VS.HSUPA.ChR.EDCHtoFACH.Att Measurement point: − This measurement is performed at point A shown in the figure. The RNC sends a RADIO BEAR RECONFIGURE message to the UE during the DCCC or RAB ASSIGN procedure. If the uplink channel of the UE switches from EDCH to FACH in the same cell, the RNC measures this item in the HSUPA serving cell


from EDCH to FACH In a Cell Counter: − VS.HSUPA.ChR.EDCHtoFACH.Succ Measurement point: − This measurement is triggered at point A1 shown in the figure. The RNC receives a RB RECFG CMP message from the UE during the DCCC or RAB ASSIGN procedure. If the uplink channel of the UE switches from EDCH to FACH in the same cell, the RNC measures this item in the HSUPA serving cell


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Channel type switch from FACH to EDCH Number of Attempts to switch channel type from FACH to EDCH In a Cell Counter: − VS.HSUPA.ChR.FACHtoEDCH.Att Measurement point: − This measurement is performed at point A shown in the figure. The RNC sends a RADIO BEAR RECONFIGURE message to the UE during the DCCC or RAB ASSIGN procedure. If the uplink channel of the UE switches from FACH to EDCH in the same cell, the RNC measures this item in the HSUPA serving cell


from FACH to EDCH In a Cell Counter: − VS.HSUPA.ChR.FACHtoEDCH.Succ Measurement point: − This measurement is performed at point A1 shown in the figure. The RNC receives a RB RECFG CMP message from the UE during the DCCC or RAB ASSIGN procedure. If the uplink channel of the UE switches from FACH to EDCH in the same cell, the RNC measures this item in the HSUPA serving cell


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Inter-System HO

Number of Attempts at PS Domain Outgoing Inter-RAT Handovers for HSUPA services (Cell) Counter: − VS.HSUPA.IRATHO.AttOutPSUTRAN Measurement point: − The measurement is triggered at point B as shown in the figure, that is, when the RNC sends the UE a CELL CHANGE ORDER FROM UTRAN message during PS domain inter-RAT outgoing handover for HSUPA services

Number of Successful RNC-Originated PS Domain Outgoing Inter-RAT Handovers for HSUPA services (Cell) Counter: − VS.HSUPA.IRATHO.SuccOutPSUTRAN Measurement point: − The measurement is triggered at point C as shown in the figure, that is, when the RNC receives an IU RELEASE COMMAND message with the cause of "Successful Relocation“, "Normal Release" or "Network Optimization" during PS domain outgoing inter-RAT handover for HSUPA services. The RNC takes statistics in the best cell the UE camps on before relocation


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Summary

This presentation introduces WCDMA

Summary

mobility KPIs and related counters: Soft handover counters and KPIs Hard handover counters and KPIs Inter-RAT handover counters and KPIs HSDPA handover counters and KPIs HSUPA handover counters and KPIs


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Thank you www.huawei.com

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2.WCDMA Mobility Counters and KPIs Introduction

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