LTEKPI优化交流

爱立信KPI优化交流爱立信北京联通LTE项目组2015.02爱立信的KPI分类Accessibility满足用户业务需求的能力Retainability为用户提供持续服务的能力Integrity为客户提供预期服务质量的能力Mobility切换性能Systemutilisation*业务、负荷、资源使用Availability设备可用性*Systemutilization用于辅助运营商进行网络容量和配置管理LTE统计KPI建议分类推荐KPI用户影响接入性业务接入成功率中保持性业务掉线率高完整性下行用户平均吞吐量高完整性上行用户平均吞吐量高移动性系统内切换成功率高无线接通率KPI计算公式PIRRC建立成功率ERAB建立成功率接入性=100%×𝑝𝑚𝑅𝑟𝑐𝐶𝑜𝑛𝑛𝐸𝑠𝑡𝑎𝑏𝑆𝑢𝑐𝑐𝑝𝑚𝑅𝑟𝑐𝐶𝑜𝑛𝑛𝐸𝑠𝑡𝑎𝑏𝐴𝑡𝑡−𝑝𝑚𝑅𝑟𝑐𝐶𝑜𝑛𝑛𝐸𝑠𝑡𝑎𝑏𝐴𝑡𝑡𝑅𝑒𝑎𝑡𝑡*𝑝𝑚𝐸𝑟𝑎𝑏𝐸𝑠𝑡𝑎𝑏𝑆𝑢𝑐𝑐𝐼𝑛𝑖𝑡+𝑝𝑚𝐸𝑟𝑎𝑏𝐸𝑠𝑡𝑎𝑏𝑆𝑢𝑐𝑐𝐴𝑑𝑑𝑒𝑑𝑝𝑚𝐸𝑟𝑎𝑏𝐸𝑠𝑡𝑎𝑏𝐴𝑡𝑡𝐼𝑛𝑖𝑡+𝑝𝑚𝐸𝑟𝑎𝑏𝐸𝑠𝑡𝑎𝑏𝐴𝑡𝑡𝐴𝑑𝑑𝑒𝑑pmRrcConnEstabSucc:ThetotalnumberofsuccessfulRRCConnectionEstablishments.pmRrcConnEstabAtt:ThetotalnumberofRRCConnectionRequestattempts.pmRrcConnEstabAttReatt:ThetotalnumberofRRCConnectionRequestattemptsthatareconsideredasre-attempts.pmErabEstabSuccInit:ThetotalnumberofsuccessfulinitialE-RABEstablishments.pmErabEstabSuccAdded:ThetotalnumberofsuccessfullyaddedE-RABs.pmErabEstabAttInit:ThetotalnumberofinitialE-RABEstablishmentattempts.pmErabEstabAttAdded:ThetotalnumberofaddedE-RABEstablishmentattempts.RRC建立流程开始：尝试：RRCConnectionRequest流程结束：成功：RRCConnectionSetup失败：RRCConnectionRequestRejectedS1建立流程开始：尝试：InitialUE(RBSMessage)流程结束：成功：在S1逻辑信道上收到消息，如：S1initialcontextsetuprequestERAB建立流程开始：尝试：S1建立成功流程结束：成功：RBS向MME发送InitialContextSetupResponse保持性E-RAB掉线率SARR（SessionAbnormalReleaseRate）KPI计算公式𝑆𝐴𝑅𝑅[%]=100%×𝑝𝑚𝐸𝑟𝑎𝑏𝑅𝑒𝑙𝐴𝑏𝑛𝑜𝑟𝑚𝑎𝑙𝐸𝑛𝑏𝐴𝑐𝑡+𝑝𝑚𝐸𝑟𝑎𝑏𝑅𝑒𝑙𝐴𝑏𝑛𝑜𝑟𝑎𝑚𝑙𝑀𝑚𝑒𝐴𝑐𝑡𝑝𝑚𝐸𝑟𝑎𝑏𝑅𝑒𝑙𝐴𝑏𝑛𝑜𝑟𝑚𝑎𝑙𝐸𝑛𝑏+𝑝𝑚𝐸𝑟𝑎𝑏𝑅𝑒𝑙𝑁𝑜𝑟𝑚𝑎𝑙𝐸𝑛𝑏+𝑝𝑚𝐸𝑟𝑎𝑏𝑅𝑒𝑙𝑀𝑚𝑒pmErabRelAbnormalEnbAct:ThetotalnumberofabnormalE-RABReleasespercellinitiatedbytheeNBandthattherewasdataineithertheULorDLbuffer(i.e.active).pmErabRelAbnormalMmeAct:ThetotalnumberofE-RABReleasesinitiatedbytheMMEconsideredasabnormal.pmErabRelAbnormalEnb:ThetotalnumberofabnormalE-RABReleasestriggeredbyeNBpercell.pmErabRelNormalEnb:ThetotalnumberofnormalE-RABReleasestriggeredbyeNBpercell.pmErabRelMme:ThetotalnumberofE-RABReleasespercellinitiatedbytheMMEexcludingsuccessfulhandover.MME发起E-RABReleaseProcedure–MMEInitiated在Buffer中有数据的非正常释放，才是用户感知的掉话ENB发起E-RABReleaseProcedure–eNBInitiated在Buffer中有数据的非正常释放，才是用户感知的掉话下行用户速率DLUT（DownlinkUserThroughput）KPI计算公式pmPdcpVolDlDrb:下行方向上总的DRB的流量Unit:1kilobit(1000bits)pmPdcpVolDlDrbLastTTI:buffer为空前的最后一个TTI上DRB的流量Unit:1kilobit(1000bits)pmUeThpTimeDl:下行有效的传输时间，从buffer里第一个PDCPSDU在Uu口上发送到最后buffer为空为止，其中去除buffer为空前的一个TTI.Unit:1ms完整性-基于用户感知的下行速率KPINote：我们在统计下行用户速率的过程中，从空口的第一个包调度，到用户的最后一个数据调度完成，将去除尾包数据量和时间。上行也同样如此。完整性-基于用户感知的下行速率KPI统计原则KPI上行用户速率ULUT（UplinkUserThroughput）KPI计算公式pmUeThpVolUl:上行方向上总的DRB的流量Unit:1kilobit(1000bits)pmUeThpTimeUl:上行有效传输时间Unit:1ms完整性-基于用户感知的上行速率KPI完整性-基于用户感知的上行速率KPI统计原则KPI移动性系统内切换成功率HOSR（Intra-LTEHandoverSuccessRate）KPI𝐻𝑂𝑆𝑅%=100%×𝑝𝑚𝐻𝑜𝑃𝑟𝑒𝑝𝑆𝑢𝑐𝑐𝐿𝑡𝑒𝐼𝑛𝑡𝑟𝑎𝐹+𝑝𝑚𝐻𝑜𝑃𝑟𝑒𝑝𝑆𝑢𝑐𝑐𝐿𝑡𝑒𝐼𝑛𝑡𝑒𝑟𝐹𝑝𝑚𝐻𝑜𝑃𝑟𝑒𝑝𝐴𝑡𝑡𝐿𝑡𝑒𝐼𝑛𝑡𝑟𝑎𝐹+𝑝𝑚𝐻𝑜𝑃𝑟𝑒𝑝𝐴𝑡𝑡𝐿𝑡𝑒𝐼𝑛𝑡𝑒𝑟𝐹×𝑝𝑚𝐻𝑜𝐸𝑥𝑒𝑆𝑢𝑐𝑐𝐿𝑡𝑒𝐼𝑛𝑡𝑟𝑎𝐹+𝑝𝑚𝐻𝑜𝐸𝑥𝑒𝑆𝑢𝑐𝑐𝐿𝑡𝑒𝐼𝑛𝑡𝑒𝑟𝐹𝑝𝑚𝐻𝑜𝐸𝑥𝑒𝐴𝑡𝑡𝐿𝑡𝑒𝐼𝑛𝑡𝑟𝑎𝐹+𝑝𝑚𝐻𝑜𝐸𝑥𝑒𝐴𝑡𝑡𝐿𝑡𝑒𝐼𝑛𝑡𝑒𝑟𝐹计算公式切换准备切换执行移动性到WCDMA的系统间切换成功率IRAT-HOSR-3GKPI𝐻𝑂𝑆𝑅%=100%×𝑝𝑚𝐻𝑜𝑃𝑟𝑒𝑝𝑆𝑢𝑐𝑐𝑊𝑐𝑑𝑚𝑎𝑝𝑚𝐻𝑜𝑃𝑟𝑒𝑝𝐴𝑡𝑡𝑊𝑐𝑑𝑚𝑎×𝑝𝑚𝐻𝑜𝐸𝑥𝑒𝑆𝑢𝑐𝑐𝑊𝑐𝑑𝑚𝑎𝑝𝑚𝐻𝑜𝐸𝑥𝑒𝐴𝑡𝑡𝑊𝑐𝑑𝑚𝑎计算公式设备可用性𝑝𝑚𝐶𝑒𝑙𝑙𝐷𝑜𝑤𝑛𝑡𝑖𝑚𝑒𝐴𝑢𝑡𝑜小区完好率CellAvailability(CA)KPI𝐶𝐴%=100%×𝑁×𝐿×900−(𝑝𝑚𝐶𝑒𝑙𝑙𝐷𝑜𝑤𝑛𝑡𝑖𝑚𝑒𝐴𝑢𝑡𝑜+𝑝𝑚𝐶𝑒𝑙𝑙𝐷𝑜𝑤𝑛𝑡𝑖𝑚𝑒𝑀𝑎𝑛)𝑁×𝐿×900计算公式计数器：CellDowntimeMan–由于下列因素小区关闭时长：-小区状态人工设置为关闭-维护需要，临时关闭小区CellDowntimeAuto–由于故障，造成小区状态处于关闭的时长注：不包括小区启动N:小区数目L:为统计区间ROP数量资源利用类SystemLoadDownlinkVolumeUplinkVolumeActiveUEsAveragenumberofsimultaneousE-RABsUESessionTimePhysicalResourcesPRButilizationProcessorLoadMPLoadSystemLoadDownlinkVolumePIUplinkVolumePI计数器pmPdcpVolDlDrbUnit:1kilobit(1000bits)Thetotalvolume(PDCPSDU)onDataRadioBearersthathasbeentransmittedinthedownlinkdirectioninthePDCPlayer.pmPdcpVolDlSrbUnit:1kilobit(1000bits)Thetotalvolume(PDCPSDU)onSignalingRadioBearersthathasbeentransmittedinthedownlinkdirectioninthePDCPlayer.计数器pmPdcpVolUlDrbUnit:1kilobit(1000bits)Thetotalvolume(PDCPSDU)onDataRadioBearersthathasbeenreceivedintheuplinkdirection.pmPdcpVolUlSrbUnit:1kilobit(1000bits)Thetotalnumberofbits(PDCPSDU)onSignalingRadioBearersthathasbeentransferred(acknowledgedbytheRBS)intheuplinkdirection.NumberofActiveUsersPI计数器：pmActiveUeDlSum：NumberofUEswithDRBdatatosendinthedownlinkdirection.AggregatesforeachTTIpmActiveUeUlSum：NumberofUEswithbufferstatusreportsindicatingDRBdatatobesentintheuplinkdirection.AggregatesforeachTTISystemLoadSystemLoadAveragenumberofsimultaneousE-RABspmErabLevSumSamplingrate:5secondspmErabLevSampSamplingrate:5seconds计数器：pmErabLevSumSumofallsamplevaluesrecordedforNumberofsimultaneousE-RABspmErabLevSampCountsthenumberoftimesthecorrespondingSumcountershasbeenincremented.SessionTimePI计数器：pmSessionTimeUe：Unit:1sNumberofsessionsecondsaggregatedforUEsinacell.AUEissaidtobe“insession”ifanydataon