Huawei KPI Formulas

Accessibility Call Setup Success Rate CSSR_Voice(%) 100 * (((RRC.SuccConnEstab.OgConvCall + RRC.SuccConnEstab.TmConvCall) /

(RRC.AttConnEstab.OrgConvCall + RRC.AttConnEstab.TmConvCall)) * (VS.RAB.SuccEstab.AMR / VS.RAB.AttEstab.AMR)) Basically OK as Voice call should be “Conversational” class of traffic. Suggest to add “RRC.SuccConnEstab.OrgEmgCall” to numerator and

“RRC.AttConnEstab.OrgEmgCall” to denominator to the formula CSSR_Video(%) 100 * (((RRC.SuccConnEstab.OgConvCall + RRC.SuccConnEstab.TmConvCall) /

(RRC.AttConnEstab.OrgConvCall + RRC.AttConnEstab.TmConvCall)) * (VS.RAB.SuccEstCS.Conv.64 / VS.RAB.AttEstCS.Conv.64)) OK as the KPI focus on Video service only which should be “Conversational” class of

traffic.

Accessibility (Continue) PDP Context Activation Success Rate (R99 PS) CSSR_PS_R99(%) (VS.RAB.SuccEstabPS.Conv + VS.RAB.SuccEstabPS.Str + VS.RAB.SuccEstabPS.Inter +

VS.RAB.SuccEstabPS.Bkg) / (VS.RAB.AttEstabPS.Conv + VS.RAB.AttEstabPS.Str + VS.RAB.AttEstabPS.Inter + VS.RAB.AttEstabPS.Bkg) The formula is actually used to calculate the PS RAB Success Rate May need to check if SGSN/GGSN can generate the relevant counters to compute this KPI

and differentiate between R99 PS and HSDPA by QoS metrics or collect by driving test. Otherwise, need to revise the KPI name to “PS Call Setup Success Rate (R99)”. If so, formula needs to multiply by RRC Connection Setup Success Rate that carries PS

Traffic: (RRC.SuccConnEstab.OrgBkgCall + RRC.SuccConnEstab.OgConvCall +

RRC.SuccConnEstab.OrgItrCall + RRC.SuccConnEstab.OrgStrCall + RRC.SuccConnEstab.OrgSubCall + RRC.SuccConnEstab.TmBkgCall + RRC.SuccConnEstab.TmConvCall + RRC.SuccConnEstab.TmItrCall + RRC.SuccConnEstab.TmStrCall + RRC.SuccConnEstab.EmgCall) /

(RRC.AttConnEstab.OrgBkgCall + RRC.AttConnEstab.OrgConvCall + RRC.AttConnEstab.OrgInterCall + RRC.AttConnEstab.OrgStrCall + RRC.AttConnEstab.OgSubCall + RRC.AttConnEstab.TmBkgCall + RRC.AttConnEstab.TmConvCall + RRC.AttConnEstab.TmInterCall + RRC.AttConnEstab.TmStrCall + RRC.AttConnEstab.EmgCall)

Accessibility (Continue) PS Setup Success Rate (HSDPA) CSSR_PS_HSDPA(%) ((RRC.SuccConnEstab.OrgltrCall + RRC.SuccConnEstab.OrgBkgCall +

RRC.SuccConnEstab.TmltrCall + RRC.SuccConnEstab.TmBkgCall) / (RRC.AttConnEstab.OrgInterCall + RRC.AttConnEstab.OrgBkgCall + RRC.AttConnEstab.TmInterCall + RRC.AttConnEstab.TmBkgCall)) * (VS.HSDPA.RAB.SuccEstab / VS.HSDPA.RAB.AttEstab) It is suggested to use the same RRC Connection Setup Success Rate as in PS R99 that

could possibly carries PS traffic. (RRC.SuccConnEstab.OrgBkgCall + RRC.SuccConnEstab.OgConvCall +

RRC.SuccConnEstab.OrgItrCall + RRC.SuccConnEstab.OrgStrCall + RRC.SuccConnEstab.OrgSubCall + RRC.SuccConnEstab.TmBkgCall + RRC.SuccConnEstab.TmConvCall + RRC.SuccConnEstab.TmItrCall + RRC.SuccConnEstab.TmStrCall + RRC.SuccConnEstab.EmgCall) /

(RRC.AttConnEstab.OrgBkgCall + RRC.AttConnEstab.OrgConvCall + RRC.AttConnEstab.OrgInterCall + RRC.AttConnEstab.OrgStrCall + RRC.AttConnEstab.OgSubCall + RRC.AttConnEstab.TmBkgCall + RRC.AttConnEstab.TmConvCall + RRC.AttConnEstab.TmInterCall + RRC.AttConnEstab.TmStrCall + RRC.AttConnEstab.EmgCall)

Retainability CS Call Drop Rate CDR_CS(%) 100 * (1 – (VS.RAB.Loss.CS.Norm.AMR / (VS.RAB.Loss.CS.Norm.AMR +

VS.RAB.Loss.CS.AMR))) The formula only accounts Voice AMR service which does not match with the KPI name. Also, VS.RAB.Loss.CS.Abnorm is missing. Suggest to revise the formula as below:

100 * (VS.RAB.Loss.CS.Abnorm + VS.RAB.Loss.CS.RF) / (VS.RAB.Loss.CS.Abnorm +

VS.RAB.Loss.CS.Norm + VS.RAB.Loss.CS.RF)

Retainability (Continue) PS Call Drop Rate CDR_PS_R99(%) 100 * (VS.RAB.Loss.PS.Abnorm + VS.RAB.Loss.PS.RF) / (VS.RAB.Loss.PS.Abnorm +

VS.RAB.Loss.PS.RF + VS.RAB.Loss.PS.Norm) Need to clarify with Huawei whether the counters used includes HSDPA or not. If yes,

suggest to use below formula to avoid confusion: (VS.Abnorm.Rel.PS.Conv + VS.Abnorm.Rel.PS.Str + VS.Abnorm.Rel.PS.BE.RB.0.32 +

VS.Abnorm.Rel.PS.BE.RB.32.64 + VS.Abnorm.Rel.PS.BE.RB.64.144 + VS.Abnorm.Rel.PS.BE.RB.144.384) / (VS.Abnorm.Rel.PS.Conv + VS.Abnorm.Rel.PS.Str + VS.Abnorm.Rel.PS.BE.RB.0.32 + VS.Abnorm.Rel.PS.BE.RB.32.64 + VS.Abnorm.Rel.PS.BE.RB.64.144 + VS.Abnorm.Rel.PS.BE.RB.144.384 + VS.Norm.Rel.PS.Conv + VS.Norm.Rel.PS.Str + VS.Norm.Rel.PS.BE.RB.0.32 + VS.Norm.Rel.PS.BE.RB.32.64 + VS.Norm.Rel.PS.BE.RB.64.144 + VS.Norm.Rel.PS.BE.RB.144.384)

Retainability (Continue) PS Call Drop Rate CDR_PS_HSDPA(%) 100 * (VS.HSDPA.RAB.Loss.Abnorm.NonRF + VS.HSDPA.RAB.Loss.RF) /

(VS.HSDPA.RAB.Loss.InActivity + VS.HSDPA.RAB.Loss.Abnorm.NonRF + VS.HSDPA.RAB.Loss.RF + VS.HSDPA.RAB.Loss.Norm + VS.HSDPA.ChR.HSDSCHtoDCH + Vs.HSDPA.Chr.HSDSCHtoFACH + VS.HSDPA.HHO.H2D.SuccOutIntraFreq + VS.HSDPA.HHO.H2D.SuccOutInterFreq) Need to double check with Huawei if VS.HSDPA.RAB.Loss.Norm,

VS.HSDPA.ChR.HSDSCHtoDCH, Vs.HSDPA.Chr.HSDSCHtoFACH, VS.HSDPA.HHO.H2D.SuccOutIntraFreq and VS.HSDPA.HHO.H2D.SuccOutInterFreq are disjoint set of counters. Make sure there is no duplicate count.

Mobility Soft handover Success Rate SHO SR(%) 100 * ((SHO.SuccRlAddUESide + SHO.SuccRLDelUESide) / (Sho.AttRLAddUESide +

SHO.AttRLDelUESide)) OK.

Inter RAT handover Success Rate (2G/3G) ISHO_CS_3Gto2G(%) 100 * IRATHO.SuccOutCS / IRATHO.AttOutCS OK.

ISHO_PS_3Gto2G(%) 100 * VS.IRATHO.Load.SuccOutPSUTRAN / VS.IRATHO.AttOutPSUTRAN Not OK. The numerator is only a sub-set of success count. Need to revise as 100 * IRATHO.SuccOutPSUTRAN / IRATHO.AttOutPSUTRAN

Mobility (Continue) Hard handover Success Rate Hard HO CS SR(%) 100 * VS.MBand.HO.SuccOutCS / VS.MBand.HO.AttOutCS Depend on network configuration, the formula is focus on Multi-Band Frequency Hard

Handover. It is only a sub-set of HHO and only useful if the network has multiband UMTS configuration There is no complete set of counters to differentiate the HHO into CS and PS domain.

Hard HO PS SR(%) 100 * VS.MBand.HO.SuccOutPS / VS.MBand.HO.AttOutPS Same problem as CS case.

May consider using overall interfrequency HHO counters: VS.HHO.InterFreq.SuccOut / VS.HHO.InterFreq.AttOut

Traffic The rest of KPI formulas used in this category has no major

problem. Make sure the sum of counters need to be divided by the

number of samples in the collected period. Suggest to add following formula for tracking the number of

HSDPA and HSUPA users Mean # of HSDPA Users

sum(VS.HSDPA.UE.Mean.Cell) / Number of Samples

Mean # of HSUPA Users

sum(VS.HSUPA.UE.Mean.Cell) / Number of Samples