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HUAWEI TECHNOLOGIES CO., LTD.
www.huawei.com
HUAWEI Confidential
Security Level:
WCDMA Mobility Counters
and KPIs Introduction
RAN 10 - issue 1.2
2
HUAWEI TECHNOLOGIES CO., LTD. Page 2HUAWEI Confidential
� WCDMA handover can be divided into
different categories.
� Different counters and KPI are used for
different handovers.
3
HUAWEI TECHNOLOGIES CO., LTD. Page 3HUAWEI Confidential
� Upon completion of this course, you will be able to:
�Know different handover counter system
�Know different handover KPI
4
HUAWEI TECHNOLOGIES CO., LTD. Page 4HUAWEI Confidential
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
5
HUAWEI TECHNOLOGIES CO., LTD. Page 5HUAWEI Confidential
Chapter 1 Soft Handover Counters and KPIs Chapter 1 Soft Handover Counters and KPIs
Chapter 2 Hard Handover Counters and KPIsChapter 2 Hard Handover Counters and KPIs
Chapter 3 InterChapter 3 Inter--RAT Handover Counters and KPIsRAT Handover Counters and KPIs
Chapter 4 HSDPA Handover Counters and KPIsChapter 4 HSDPA Handover Counters and KPIs
Chapter 5 HSUPA Handover Counters and KPIsChapter 5 HSUPA Handover Counters and KPIs
6
HUAWEI TECHNOLOGIES CO., LTD. Page 6HUAWEI Confidential
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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HUAWEI TECHNOLOGIES CO., LTD. Page 7HUAWEI Confidential
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.
8
HUAWEI TECHNOLOGIES CO., LTD. Page 8HUAWEI Confidential
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
� UEs with Six RLs: VS.SHO.AS.6
9
HUAWEI TECHNOLOGIES CO., LTD. Page 9HUAWEI Confidential
� 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.AttRLAddUESide at point B SHO.SuccRLAddUESide at point C
− SHO.AttRLDelUESide at 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
10
HUAWEI TECHNOLOGIES CO., LTD. Page 10HUAWEI Confidential
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*_mptSHOASUAtte
essSHOASUSuccSRSHO =
11
HUAWEI TECHNOLOGIES CO., LTD. Page 11HUAWEI Confidential
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
12
HUAWEI TECHNOLOGIES CO., LTD. Page 12HUAWEI Confidential
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
UEUEUEASS
3*2*1* 321
13
HUAWEI TECHNOLOGIES CO., LTD. Page 13HUAWEI Confidential
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
14
HUAWEI TECHNOLOGIES CO., LTD. Page 14HUAWEI Confidential
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.
15
HUAWEI TECHNOLOGIES CO., LTD. Page 15HUAWEI Confidential
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
Chapter 5 HSUPA Handover Counter and KPIChapter 5 HSUPA Handover Counter and KPI
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HUAWEI TECHNOLOGIES CO., LTD. Page 16HUAWEI Confidential
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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HUAWEI TECHNOLOGIES CO., LTD. Page 17HUAWEI Confidential
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
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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HUAWEI TECHNOLOGIES CO., LTD. Page 18HUAWEI Confidential
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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HUAWEI TECHNOLOGIES CO., LTD. Page 19HUAWEI Confidential
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
Reconfiguration” is invalid for the UE.
20
HUAWEI TECHNOLOGIES CO., LTD. Page 20HUAWEI Confidential
Inter-frequency Hard Handover Counter System
� Inter-frequency Hard Handover execution failure (Cell)
� VS.HHO.InterFreqOut.NoReply
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HUAWEI TECHNOLOGIES CO., LTD. Page 21HUAWEI Confidential
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
Note: The Code resource allocation failure counters are included in the DL admission rejected counters
22
HUAWEI TECHNOLOGIES CO., LTD. Page 22HUAWEI Confidential
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
23
HUAWEI TECHNOLOGIES CO., LTD. Page 23HUAWEI Confidential
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_ ×=
temptInterHHOAt
ccessInterHHOSuSRInterHHO
24
HUAWEI TECHNOLOGIES CO., LTD. Page 24HUAWEI Confidential
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
25
HUAWEI TECHNOLOGIES CO., LTD. Page 25HUAWEI Confidential
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
Chapter 5 HSUPA Handover Counter and KPIChapter 5 HSUPA Handover Counter and KPI
26
HUAWEI TECHNOLOGIES CO., LTD. Page 26HUAWEI Confidential
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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HUAWEI TECHNOLOGIES CO., LTD. Page 27HUAWEI Confidential
Inter-RAT Handover Counter System
� 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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HUAWEI TECHNOLOGIES CO., LTD. Page 28HUAWEI Confidential
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
Figure1 Figure2
29
HUAWEI TECHNOLOGIES CO., LTD. Page 29HUAWEI Confidential
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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HUAWEI TECHNOLOGIES CO., LTD. Page 30HUAWEI Confidential
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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HUAWEI TECHNOLOGIES CO., LTD. Page 31HUAWEI Confidential
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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HUAWEI TECHNOLOGIES CO., LTD. Page 32HUAWEI Confidential
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
▪ From point B to point D
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HUAWEI TECHNOLOGIES CO., LTD. Page 33HUAWEI Confidential
Inter-RAT Handover Counter System
� 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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HUAWEI TECHNOLOGIES CO., LTD. Page 34HUAWEI Confidential
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 non-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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HUAWEI TECHNOLOGIES CO., LTD. Page 35HUAWEI Confidential
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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HUAWEI TECHNOLOGIES CO., LTD. Page 36HUAWEI Confidential
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*_tPpHOAttempCSInterRAT
sPpHOSuccesCSInterRATSRATPpHOCSInterreR =
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HUAWEI TECHNOLOGIES CO., LTD. Page 37HUAWEI Confidential
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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HUAWEI TECHNOLOGIES CO., LTD. Page 38HUAWEI Confidential
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*_HOAttemptCSInterRAT
HOSuccessCSInterRATSRHOCSInterRAT =
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HUAWEI TECHNOLOGIES CO., LTD. Page 39HUAWEI Confidential
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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HUAWEI TECHNOLOGIES CO., LTD. Page 40HUAWEI Confidential
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_ ×=
tOutPpHOAttempPSInterRAT
sOutPpHOSuccesPSInterRATSRPpHOPSInterRAT out
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HUAWEI TECHNOLOGIES CO., LTD. Page 41HUAWEI Confidential
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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HUAWEI TECHNOLOGIES CO., LTD. Page 42HUAWEI Confidential
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_ ×=
utHOAttemptOPSInterRAT
utHOSuccessOPSInterRATSRHOPSInterRAT out
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HUAWEI TECHNOLOGIES CO., LTD. Page 43HUAWEI Confidential
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)
44
HUAWEI TECHNOLOGIES CO., LTD. Page 44HUAWEI Confidential
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
Chapter 5 HSUPA Handover Counter and KPIChapter 5 HSUPA Handover Counter and KPI
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HUAWEI TECHNOLOGIES CO., LTD. Page 45HUAWEI Confidential
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×=
empNumHtoHSHOAtt
cessNumHtoHSHOSuccessRatioHtoHSHOSuc
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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×=
mHOAttempNuHtoHInterH
umHOSuccessNHtoHInterHatioHOSuccessRHtoHInterH
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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-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×=
mpNumHtoRHOAtte
essNumHtoRHOSuccessRatioHtoRHOSucc
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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×=
mpNumRtoHHOAtte
essNumRtoHHOSuccessRatioRtoHHOSucc
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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_ ×=
ptRATHOAttemHSDPAInter
ssRATHOSucceHSDPAInterSRRATHOHSDPAInter
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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 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
Chapter 5 HSUPA Handover Counter and KPIChapter 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
SummarySummary
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