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1、AMF与MME地址对接问题导致5-4切换不成功1.问题描述跑圈测试中发现SA网络频繁上报异系统Bl,切换LTE失败，原因切换准备失败，原因值为：unknowTargetid(12),导致拉网sa-lte场景无法搭建，协同爱立信MME和5GC抓包定位。2 .问题分析2.1. 问题现象在某地进行组合52遍历测试过程当中发现，测试终端占用SA网络，一直上报Bl,核心网返回切换准备失败，失败原因：unknowntargetlD(12),导致大概率5-4的切换失败。2.2. 问题分析1、查询站点无告警，测试期间，基站侧无操作，无线环境良好;2、终端在SA网络，从15:02:54开始，一直上报Bl事件，目
2、标小区PCI:183/54,系统没有任何响应，如下:加0881皿%1 O UOG8 1MV, I 1 1S34 1MO ISXASsJ 1 M0C8 1MU5,. 1 WOWR WS” ? MM4B46 1Sl1MSA i RV03B13Y J MX8e3S40 i &M8.1 WX0 Jn3 I 1 MM*KHPCIW.rKMm*P9.5mCHmK)15f*4rKrtRUPnSmUMSMiHvw)M4eKtMSe*K.WnCfmtiarwrKHmaF.11OT(nm4Mc三ttAMMRfWrMHWUPWnm(fMUK*”rCVrMUJMeKZVMX“.三vUMtMIQ11v(MlMo*9gt
3、sIlXWcEm，ZwaSs2jmhc-Wr,mrISmOMNkQMrtKI1S11MJe.jt*ruSerKtWrnWrVC*twmcWMtMU乂比W?5HKVap9t.ffKHmHQt15v44WMtMMHKtl4KM期间低概率性与PCI：183切换成功，如下:SUOMolISfiUOMDateTrawtarMtTPMHMU334S9HgJMMKCMton%fHFOIW&MOItSC&P100MtfEUItlmyMrQMMAQ15mMU303S门必111NRhwaAIMMtUft-NnmhOtfRyrem*UUnekn99ffWyBWolftJ-1a-11MMfmmaiq11URSylfm
4、1.t*np1ofnQge11MU0W04MStS)MttWV11n(Ht*nG4kW*Mn(HlMQm4$MMK*tMKMWOggISOSitMUtrfHOAnMl(ItTe9MfQian,MKM!MOO/IMfM0OMO2IofNWO4OHS0Su|mEmlCMftQWteMMelISAMbMut11H0，2020-08-08 15:06:18.2020-08-08 15:06:19.2020-08-08 15:06:19.2020-08-08 15:06:19.7413860INKcveniDIVIeaSLon. di-irNREventBI NR2LTEH0Attempt LTEniB
5、ConfigSerVCelIPQ:387;falseirgetEARFCN:38400;t304:ms500;HOTypengKXXX矢M 圳 S3MUSJ10MgHwmKHMHai KMMiHsmpmMUIHU)i-*4srweawcMnxnrct*nHfaaautt 5e IPOIMi0XM4RBTISa61fMltKCWMFrWCflgflyMyy 而KHHOMnnMd KMMX2r*t3f .QLc.mwt 3K Elyk _ 中.9：.cjjgL-.E* ，k .Ogr KaK 一 故.3. 反.5Ew -严.3K f4.2JMJWT 一 CK 一IKMMB MutgnnWHlMgn
6、oni SSMn ：；段“，工郭e gyMf X鉴于以上原因，怀疑基站外部数据/某些网络节点对接数据做错或漏配，查询SA基站5-4外部数据配置，不存在问题。3 .问题结论综上分析，结合跟目标小区存在小概率切换成功和基站5-4的现网配置，可以看出SA基站外部数据没有问题，需联合核心网抓包分析。4,处理措施联合核心网抓包分析，5GC复测定位为AMF与MME地址对接问题，AMF地址变更未通知MME修改，切换目的地址不通导致切换失败，核心网作相应调整后问题解决：已经将该问题加入问题投诉规定动作，节省类似问题的定位时间，提高了团队的工作效率。KPlName1.TETAUpdateSuccessRateK
7、PIValue1OO.OO96LTE2NRHOSuccessRateIoO.0096ZRHandoverSuccessRate100.0096NRIntraFreqHandoverSuccess.100.0096NRPDUSessionESTBSuccess.IOo.0096ZRRRCDropRate0.0096ZRRRCSetupSuccessRate100.0096NRRegistrationSuccessRate100.0096ZRSCdIAddSuccessRateIOo.0096ZRSCdIDropRateO.OO96ZRSCdIRASuccessRate100.0096NR2LTE
8、HOSuccessRate1OO.OO96TimeSou.EventInformation18:07:09.217 MS118:07:09.217 MS1NREventA2MeasConf.NREventAZMeasConf.a2-ThresholdRSRP:-85;.a2-ThresholdRSRP:-120.18:07:09.217 MS118:07:09.229 MS118:07:09.242 MS118:07:09.541 MS1 18:07:09.597 MS1 18:07:20.000 MS1 18:07:20.01 1 MS118:07:20.011 MS118:07:20.55
9、2 MSINREventA3MeasConf.NRPDUSessionEstabli.NRPDUSessionEstabli.NRPDUSessionEstabli.NRPDUSessionEstabli.NREventA2NREventAIMeasConf.NREventBIMeasConfigNREventBIa3-OffsetRSRP:2;hyster.pdu-session-identity-val.pdu-session-identity-val.pdu-session-identity-val.pdu-session-identity-val.ServCellPCk461;SerV
10、CelIal-ThresholdRSRP:-8O;.b1-ThreshoIdEUTRARS.ServCeIIPC1:461;ServCell.18:07:20.71418:07:20.75718:07:20.775false18:07:20.694MSlZRZLTEHOAttemptTargetPCl:52;TargetEAR.MS1EETTIRlCrtTQMS1MS1EllUL嚏18:07:20.858 18:07:20.858 18:07:20.858 18:07:20.858 18:07:20.858 18:07:20.858 18:07:20.858 18:07:20.858 18:0
11、7:20.960 18:07:21.103 18:07:21.516 18:07:21.51718:07:21.517 18:07:30.717 18:07:30.717 18:07:30.731 18:07:30.731 18:07:30.731 18:07:30.731 18:07:30.765MS1MS1MS1MS1MS1MSIMS1MS1MS1MS1MS1MS1MS1MS1MS1MS1MSIMSlMS1MS11.TEEventAIMeasCon.LTEEventAIMeasCon.LTEEventAIMeasCon.LTEEVentANMeasCon.LTEEventA2MeasCon
12、.LTEEventA2MeasCon.LTEEventA2MeasCon.LTEEventASMeasCon.LTETAUpdateAttemptLTETAUpdateSucLTEEventAILTEEventAILTEEventAILTEEventA31.TEHOA3Measureme.1.TETTIBConfig1.TEHandoverAttemptLTTIntraFreqHOAtg.LTEIntraeNodeBHO.LTEHandoverSuca1-ThresholdRSRP:-105.a1-ThresholdRSRP:-105a1-ThresholdRSRP:-105a2-ThresholdRSRP:-1O8.a2-ThresholdRSRP:-110a2-ThresholdRSRP:-121a2-ThresholdRSRP:-108.a3-Offset:4;hysteresis:1ServCellRSRP:-96ServCellRSRP:-96ServCellRSRP:-96ServCellRSRP:-81;LTE-N.falseTargetPCI:51;TargetEAR.TargetPCk51;TargetEAR.TargetPCkSI;TargetEAR.
