Huawei KPI Formulas.pdf

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Huawei KPI Formulas

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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.

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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 +

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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)

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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)

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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 +

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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.

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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

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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.

Huawei KPI Formulas.pdf