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1

HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

HUAWEI Confidential

Security Level:

WCDMA Mobility Counters

and KPIs Introduction

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HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 2



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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HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 4

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

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HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 5

Chapter 1 Soft Handover Counters and KPIs

Chapter 1 Soft Handover Counters and KPIs

Chapter 2 Hard Handover Counters and KPIs

Chapter 2 Hard Handover Counters and KPIs

Chapter 3 Inter

Chapter 3 Inter

-

-

RAT Handover Counters and KPIs

RAT Handover Counters and KPIs

Chapter 4 HSDPA 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)

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

intra-frequency hard handover.

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Soft Handover Counter System



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 Counter System



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

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Soft handover (Cell)

Soft handover based on different services − VS.SHO.AMR.AttOut − VS.SHO.CS64.AttOut − VS.SHO.PS64.AttOut − VS.SHO.PS128.AttOut − VS.SHO.PS144.AttOut − VS.SHO.PS384.AttOut

RL Additions or deletions for Soft Handover

− SHO.AttRLAddUESideat point B SHO.SuccRLAddUESideat point C − SHO.AttRLDelUESideat point B SHO.SuccRLDelUESide at point C

Soft Handover Counter System

− VS.SHO.AMR.SuccOut − VS.SHO.CS64.SuccOut − VS.SHO.PS64.SuccOut − VS.SHO.PS128.SuccOut − VS.SHO.PS144.SuccOut − VS.SHO.PS384.SuccOut

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Soft Handover KPI



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

*

_

mpt

SHOASUAtte

ess

SHOASUSucc

SR

SHO

=

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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:



Measurement scope:

− RNC



Description

− This KPI can be used to evaluate the average active set size

+

+

=

UE

UE

UE

UE

ASS

1

*

1

2

*

2

3

*

3

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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 +

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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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HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 15

Chapter 1 Soft Handover Counter and KPI

Chapter 1 Soft Handover Counter and KPI

Chapter 2 Hard Handover Counter and KPI

Chapter 2 Hard Handover Counter and KPI

Chapter 3 Inter

Chapter 3 Inter

-

-

RAT Handover Counter and KPI

RAT Handover Counter and KPI

Chapter 4 HSDPA 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

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.RNCat point B

Successful Intra-Frequency Hard Handovers: VS.HHO.Succ.IntraFreq.RNCat point C



Intra-frequency Hard handover (Cell)

Intra NodeB Hard Handover Requests: VS.HHO.AttOutIntraNodeBIntraFreqat point B

Intra NodeB Successful Hard Handovers: VS.HHO.SuccOutIntraNodeBIntraFreqat point C

Inter NodeB Hard Handover Requests: VS.HHO.AttOutInterNodeBIntraRNCIntraFreqat point B

Inter NodeB Successful Hard Handovers: VS.HHO.SuccOutInterNodeBIntraRNCIntraFreqat point C

Inter RNC Hard Handover Requests: VS.HHO.AttOutInterRNCIntraFreqIurat point B

Inter RNC Successful Hard Handovers: VS.HHO.SuccOutInterRNCIntraFreqIurat point C

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

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Inter-frequency Hard Handover Counter System



Inter-frequency Hard handover (RNC)

Inter-Frequency Hard Handover Requests: VS.HHO.InterFreq.Att.RNCat point B

Successful Inter-Frequency Hard Handovers: VS.HHO.InterFreq.Succ.RNCat point C



Inter-frequency Hard handover (Cell)

Hard Handover Requests (outgoing): VS.HHO.InterFreq.AttOutat point B

Successful Hard Handovers (outgoing): VS.HHO.InterFreq.SuccOutat point C

Hard Handover Requests (incoming): VS.HHO.InterFreqIn.Attat point B

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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

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

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Inter-frequency Hard Handover Counter System



Inter-frequency Hard Handover execution failure (Cell)

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Inter-frequency Hard Handover Counter System



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

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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

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Hard Handover KPI



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

_

=

×

tempt

InterHHOAt

ccess

InterHHOSu

SR

InterHHO

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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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HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 25

Chapter 1 Soft Handover Counter and KPI

Chapter 1 Soft Handover Counter and KPI

Chapter 2 Hard Handover Counter and KPI

Chapter 2 Hard Handover Counter and KPI

Chapter 3 Inter

Chapter 3 Inter

-

-

RAT Handover Counter and KPI

RAT Handover Counter and KPI

Chapter 4 HSDPA Handover Counter and KPI

Chapter 4 HSDPA Handover Counter and KPI

Chapter 5 HSUPA Handover Counter and KPI

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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

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Inter-RAT Handover Counter System



CS Inter-RAT handover counters (RNC)

Preparation request: VS.SRELOC.AttPrep.IRHOCSat point A

Preparation success: VS.SRELOC.SuccPrep.IRHOCSat point B

Execution request: VS.IRATHO.AttCSOut.RNCat point C

Execution success: VS.IRATHO.SuccCSOut.RNCat point D



CS Inter-RAT handover counters (Cell)

Preparation request: IRATHO.AttRelocPrepOutCSat point A

Preparation success: IRATHO.SuccRelocPrepOutCSat point B

Execution request: IRATHO.AttOutCSat point C

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Inter-RAT Handover Counter System



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

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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

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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Inter-RAT Handover Counter System



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

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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Inter-RAT Handover Counter System



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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Inter-RAT Handover Counter System



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

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Inter-RAT Handover Counter System



PS Inter-RAT handover counters (RNC)

Preparation request: VS.IRATHO.EvalPSOutUTRAN.RNCat point A

Preparation success and Execution request: VS.IRATHO.AttPSOutUTRAN.RNCat point B

Execution success: VS.IRATHO.SuccPSOutUTRAN.RNCat point D



PS Inter-RAT handover counters (Cell)

Execution request: IRATHO.AttOutPSUTRANat point B

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Inter-RAT Handover Counter System



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

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 supported Cell Change Order scenario or to use a

non-supported 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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Inter-RAT Handover Counter System



PS Inter-RAT handover failure counters (Cell)



Configuration unsupported:

IRATHO.FailOutPSUTRAN.CfgUnsupp



Physical Channel Failure:

IRATHO.FailOutPSUTRAN.PhyChFail

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



Measurement scope:

− RNC & Cell



Description

− This KPI can be used to evaluate the CS inter-RAT preparation

handover success Rate in one RNC

%

100

*

_

t

PpHOAttemp

CSInterRAT

s

PpHOSucces

CSInterRAT

SR

ATPpHO

CSInterreR

=

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Inter-RAT Handover KPI



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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Inter-RAT Handover KPI



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

*

_

HOAttempt

CSInterRAT

HOSuccess

CSInterRAT

SR

HO

CSInterRAT

=

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Inter-RAT Handover KPI



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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Inter-RAT Handover KPI



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

preparation success Rate in one RNC

%

100

_

=

×

tOut

PpHOAttemp

PSInterRAT

sOut

PpHOSucces

PSInterRAT

SR

PpHO

PSInterRAT

out

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Inter-RAT Handover KPI



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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Inter-RAT Handover KPI



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

_

=

×

ut

HOAttemptO

PSInterRAT

ut

HOSuccessO

PSInterRAT

SR

HO

PSInterRAT

out

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Inter-RAT Handover KPI



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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Chapter 1 Soft Handover Counter and KPI

Chapter 1 Soft Handover Counter and KPI

Chapter 2 Hard Handover Counter and KPI

Chapter 2 Hard Handover Counter and KPI

Chapter 3 Inter

Chapter 3 Inter

-

-

RAT Handover Counter and KPI

RAT Handover Counter and KPI

Chapter 4 HSDPA Handover Counter and KPI

Chapter 4 HSDPA Handover Counter and KPI

Chapter 5 HSUPA Handover Counter and KPI

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HSDPA Handover KPI



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

×

=

empNum

HtoHSHOAtt

cessNum

HtoHSHOSuc

cessRatio

HtoHSHOSuc

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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



Measurement scope:

− Cell



Description

− This KPI can be used to evaluate the inter-frequency hard

handover success Rate of HSDPA service in a cell

%

100

×

=

m

HOAttempNu

HtoHInterH

um

HOSuccessN

HtoHInterH

atio

HOSuccessR

HtoHInterH

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HSDPA Handover KPI



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



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



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



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 HS-DSCH to HS-HS-DSCH, the RNC measures this item in the original cell

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HSDPA Handover KPI



Channel Handover Success Rate

(HSDPA to DCH or to FACH)



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

×

=

mpNum

HtoRHOAtte

essNum

HtoRHOSucc

essRatio

HtoRHOSucc

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HSDPA Handover KPI



Channel Handover Success Rate

(HSDPA to DCH or to FACH)



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



Channel Handover Success Rate

(HSDPA to DCH or to FACH)



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



Channel Handover Success Rate

(DCH or FACH 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

×

=

mpNum

RtoHHOAtte

essNum

RtoHHOSucc

essRatio

RtoHHOSucc

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HSDPA Handover KPI



Channel Handover Success Rate

(DCH or FACH to HSDPA)



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



Channel Handover Success Rate

(DCH or FACH to HSDPA)



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



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

_

=

×

pt

RATHOAttem

HSDPAInter

ss

RATHOSucce

HSDPAInter

SR

RATHO

HSDPAInter

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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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Chapter 1 Soft Handover Counter and KPI

Chapter 1 Soft Handover Counter and KPI

Chapter 2 Hard Handover Counter and KPI

Chapter 2 Hard Handover Counter and KPI

Chapter 3 Inter

Chapter 3 Inter

-

-

RAT Handover Counter and KPI

RAT Handover Counter and KPI

Chapter 4 HSDPA Handover Counter and KPI

Chapter 4 HSDPA Handover Counter and KPI

Chapter 5 HSUPA Handover Counter and KPI

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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

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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



Number of Successes to switch channel type

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

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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



Number of Successes to switch channel type

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-to-DCH 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



Number of Successes to switch channel type

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-to-DCH inter-frequency hard handover is performed

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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



Number of Successes to switch channel type

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



Number of Successes to switch channel type

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

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

Summary

Summary

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70

Thank you

References

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