WCDMA Call Drop Counter and KPI Introduction HUAWEI TECHNOLOGIES CO , LTD www huawei com HUAWEI Confidential Security Level WCDMA Call Drop Counter System and KPI ISSUE 1 0 HUAWEI TECHNOLOGIES CO , LT[.]
Security Level: WCDMA Call Drop Counter System and KPI ISSUE 1.0 www.huawei.com HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Call drop is an very important index for evaluating network performance Call drop can be calculated based on different cells and RNC for different services HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page Upon completion of this course, you will be able to: Describe call drop counter system Know the call drop KPI HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page Preface Call Drop Rate Signaling Procedure After RAB is setup successfully, Iu release command is sent by CN due to Iu release request or RAB release request from RNC And the corresponding reasons are not: − Successful Relocation − User Inactivity − Normal Release Figure HUAWEI TECHNOLOGIES CO., LTD Figure HUAWEI Confidential Page Chapter RNC Call Drop Counter system and KPI Chapter Cell Call Drop Counter system and KPI HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page RNC Call Drop Counters System RAB.RelAbnormal.RNC CS − Based on QoS: Conversational & Streaming − Based on Services: AMR & CS64K − Based abnormal reasons: ▪ RAB preempted ▪ UTRAN generated reason ▪ OM intervention ▪ Iu interface AAL2 link abnormity ▪ UE Signaling Connection Release ▪ CELL congestion − Based on RF reasons: ▪ Failure in the Radio Interface Procedure ▪ signalling RLC reset − Normal release HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page RNC Call Drop Counters System RAB.RelAbnormal.RNC PS − Based on QoS: Conversational, Streaming, Interactive & Background − Based on Services: PS 64K, PS 128K & PS 384K − Based abnormal reasons: ▪ RAB preempted ▪ UTRAN generated reason ▪ OM intervention ▪ GTPU abnormity ▪ UE Signaling Connection Release ▪ CELL congestion − Based on RF reasons: ▪ Failure in the Radio Interface Procedure ▪ signalling RLC reset ▪ Traffic RLC reset − Normal release HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page RNC Call Drop Counters System RAB Release (RNC) CS − Due to RF: VS.RAB.Loss.CS.RF.RNC − Abnormal: VS.RAB.Loss.CS.Abnorm.RNC (exclude RF reason) − Normal: VS.RAB.Loss.CS.Norm.RNC PS − Due to RF: VS.RAB.Loss.PS.RF.RNC − Abnormal: VS.RAB.Loss.PS.Abnorm.RNC (exclude RF reason) − Normal: VS.RAB.Loss.PS.Norm.RNC HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page RNC Call Drop Counters System RAB Release triggered by RNC due to RF reason (RNC) CS: VS.RAB.Loss.CS.RF.RNC − Due to Failure in the Radio Interface Procedure: VS.RAB.Loss.CS.RF.UuNoReply.RNC − Due to signaling RLC reset: VS.RAB.Loss.CS.SRBReset.RNC PS: VS.RAB.Loss.PS.RF.RNC − Due to Failure in the Radio Interface Procedure: VS.RAB.Loss.PS.RF.UuNoReply.RNC − Due to signaling RLC reset: VS.RAB.Loss.PS.SRBReset.RNC − Due to traffic Radio Link Control (RLC) Reset: VS.RAB.Loss.PS.TRBReset.RNC HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page RNC Call Drop Counters System RAB Release triggered by RNC due to Abnormal Reason (RNC) CS: VS.RAB.Loss.CS.Abnorm.RNC PS: VS.RAB.Loss.PS.Abnorm.RNC − RAB.RelReqCS.RABPreempt − RAB.RelReqPS.RABPreempt − RAB.RelReqCS.UTRANGen − RAB.RelReqPS.UTRANGen − RAB.RelReqCS.OM − RAB.RelReqPS.OM − VS.RAB.Loss.CS.Aal2Loss.RNC − VS.RAB.Loss.PS.GTPULoss.RNC − VS.RAB.Loss.CS.RelUEGen.RNC − VS.RAB.Loss.PS.RelUEGen.RNC − VS.RAB.Loss.CS.Congstion.RNC − VS.RAB.Loss.PS.Congstion.RNC HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 10 Cell Call Drop Counters System RAB Release triggered by RNC due to RF reason (Cell) CS: VS.RAB.Loss.CS.RF − VS.RAB.Loss.CS.RF.RLCRst − VS.RAB.Loss.CS.RF.ULSync − VS.RAB.Loss.CS.RF.UuNoReply − VS.RAB.Loss.CS.RF.Oth PS: VS.RAB.Loss.PS.RF − VS.RAB.Loss.PS.RF.RLCRst − VS.RAB.Loss.PS.RF.ULSync − VS.RAB.Loss.PS.RF.UuNoReply − VS.RAB.Loss.PS.RF.Oth HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 20 Cell Call Drop Counters System RAB Release triggered by RNC due to Abnormal based on different reasons (Cell) CS: VS.RAB.Loss.CS.Abnorm PS: VS.RAB.Loss.PS.Abnorm − VS.RAB.RelReqCS.OM − VS.RAB.RelReqPS.OM − VS.RAB.RelReqCS.RABPreempt − VS.RAB.RelReqPS.RABPreempt − VS.RAB.RelReqCS.UTRANgen − VS.RAB.RelReqPS.UTRANgen − VS.RAB.Loss.CS.Aal2Loss − VS.RAB.Loss.PS.GTPULoss − VS.RAB.Loss.CS.Congstion.CELL − VS.RAB.Loss.PS.Congstion.CELL HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 21 Cell Call Drop Counters System RAB Release triggered by RNC due to Abnormal based on different services (Cell) CS: VS.RAB.Loss.CS.Abnorm PS: VS.RAB.Loss.PS.Abnorm − VS.RAB.Loss.CS.Abnorm.AMR − VS.RAB.Loss.PS.Abnorm.DL64 − VS.RAB.Loss.PS.Abnorm.DL128 − VS.RAB.Loss.PS.Abnorm.DL384 HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 22 Cell Call Drop Counters System RAB Release triggered by RNC due to Normal based on different services (Cell) CS: VS.RAB.Loss.CS.Norm PS: VS.RAB.Loss.PS.Norm − VS.RAB.Loss.CS.Norm.AMR − VS.RAB.Loss.PS.Norm.DL64 − VS.RAB.Loss.PS.Norm.DL128 − VS.RAB.Loss.PS.Norm.DL384 HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 23 Cell Call Drop Counters System RAB Release triggered by RNC based on different services (Cell) CS services: − VS.RAB.Loss.CS.AMR − VS.RAB.Loss.CS.Conv64K PS services: − VS.RAB.Loss.PS.64K − VS.RAB.Loss.PS.128K − VS.RAB.Loss.PS.384K HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 24 Cell Call Drop KPI Service Call Drop Rate (Cell) Formula Service _ CDR = ServiceRABAbnormal Re lease ×100% ServiceRAB Re lease Measurement scope: − Cell Description − This KPI can be used to evaluate the call drop ratio of different services in one cell The call drops will happen due to RNC abnormal release trigged by RAB RELEASE REQUEST or IU RELEASE REQUEST messages HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 25 Cell Call Drop KPI CS AMR Call Drop Rate (Cell) AMRRABAbnormalRelease: − VS.RAB.Loss.CS.AMR AMRRABRelease: − VS.RAB.Loss.CS.AMR + VS.RAB.Loss.CS.Norm.AMR CS VP Call Drop Rate (Cell) VPRABAbnormalRelease: − VS.RAB.Loss.CS.Conv64K VPRABRelease: − VS.RAB.Loss.CS.Conv64K + VS.RAB.Loss.CS.Norm - VS.RAB.Loss.CS.Norm.AMR HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 26 Cell Call Drop KPI PS 64K Call Drop Rate (Cell) PS64KRABAbnormalRelease: − VS.RAB.Loss.PS.RF.DL64 + VS.RAB.Loss.PS.Abnorm.DL64 PS64KRABRelease: − VS.RAB.Loss.PS.RF.DL64 + VS.RAB.Loss.PS.Abnorm.DL64 + VS.RAB.Loss.PS.Norm.DL64 PS 128K Call Drop Rate (Cell) PS128KAbnormalRelease: − VS.RAB.Loss.PS.RF.DL128 + VS.RAB.Loss.PS.Abnorm.DL128 PS128KRelease: − VS.RAB.Loss.PS.RF.DL128 + VS.RAB.Loss.PS.Abnorm.DL128 + VS.RAB.Loss.PS.Norm.DL128 HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 27 Cell Call Drop KPI PS 384K Call Drop Rate (Cell) PS384KAbnormalRelease: − VS.RAB.Loss.PS.RF.DL384 + VS.RAB.Loss.PS.Abnorm.DL384 PS384KRelease: − VS.RAB.Loss.PS.RF.DL384 + VS.RAB.Loss.PS.Abnorm.DL384 + VS.RAB.Loss.PS.Norm.DL384 HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 28 Chapter Cell Call Drop Counter system and KPI 1.1 R99/R4 service call drop counter system and KPI 1.2 HSDPA service call drop counter system and KPI HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 29 HSDPA Call Drop Counter HSDPA service release (Cell) Due to Abnormal reasons: − RF reasons : VS.HSDPA.RAB.Loss.RF ▪ Radio Connection With UE Lost ▪ Failure in the Radio Interface Procedure − Non RF reasons: VS.HSDPA.RAB.Loss.Abnorm.NonRF Due to Normal reasons: − Due to inactivity of UE: VS.HSDPA.RAB.Loss.InActivity ▪ User Inactivity − Due to normal reason: VS.HSDPA.RAB.Loss.Norm ▪ Successful Relocation ▪ Normal Release HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 30 HSDPA Call Drop KPI Service Call Drop Rate (Cell) Formula HSDPARABAb normal Re lease HSDPA _ CDR = × 100 % HSDPARAB Re lease Measurement scope: − Cell Description − This KPI can be used to evaluate the HSDPA call drop ratio in one cell The call drops will happen due to RNC abnormal release trigged by RAB RELEASE REQUEST or IU RELEASE REQUEST messages HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 31 HSDPA Call Drop KPI HSDPA Call Drop Rate (Cell) HSDPAAbnormalRelease: − VS.HSDPA.RAB.Loss.Abnorm.NonRF + VS.HSDPA.RAB.Loss.RF HSDPARelease: − VS.HSDPA.RAB.Loss.Abnorm.NonRF+VS.HSDPA.RAB.Loss.RF+VS.HSDPA.RAB.Loss.In Activity+VS.HSDPA.RAB.Loss.Norm HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 32 Summary Summary This slide mainly explained the KPIs about call drop RNC − AMR, VP, PS Cell − AMR, VP, PS64, PS128, PS384 − HSDPA HUAWEI TECHNOLOGIES CO., LTD HUAWEI Confidential Page 33 Thank you www.huawei.com