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1、1、CSFB尝试次数：倍令中有效的ExtendedServiceRequest出现次数“信令中出现ExtendedServiceRequest次数（注：出现ExtendedServiceRequest的时候必而伴l希RRC连接择放RRCConnectionRelease.才能算是一次有效的CSFB裳试次数，若单独有ExtendedServiceReqUeSt而没有RRCConnectionRelease.则这次CSFB尝试是无效的不能修人CSFB尝试次数中去）下图为有效CSFB尝试：EITElfIDSER7IC?REQO1.DOCHXMO.SCM(UlTnfontUenTransferSyst
2、eiInfonatlcnBXHC1.SClKXHU.SCBftXD1.XBXHD1.SCBSysteiInfonatlcnS/steiIMOrMH刖BlockTypelSysteiInfOrlNlgSysteiInforaatlcnTAURBQU1.OXHSCCxnectlonRequestD1.OXHU1.DOCHBXHD1.9C8M.DOHQ1.DOCH5JJCCocnectlonSetupRRCComecxlcnSetupCop)cteSysteiInfonatlcnD1.InfoniationTransferU1.InfonatlonTrtneferN.DOCHW.DOCHD1.DCC
3、HD1.InfonatlonTransferU1.InfQrlaHonTrMeferD1.InfonancnTransferm.DOCHUUACCTAU81F1.rTE“XnfonatlonTrngferD1.DCCHIUCConnectionFe.-ar-3ffHRRCiJSftftPCCHrinVICIRlQO1.COCHD1.OOCHRRCCocnectionRequestRRCComectionSetvp下图为无效CSFB卷试:,.1；FMU1.x三U1.InfonatlcnTransferD1.DOCSG1.DCCBKXBCC3HRXBCC利RlCComectlonReconfieu
4、ratlcciRBCCorrectionReconficuraticnCoiplete两次EXTENDEDSERVICEREQ之间并艺tc巴。mat了BlockTypel没有出现RRC连接睡放SysteinoriunEXTFiniPDSCTVICBRg2、CSFB胜利次数：（1）信令中CMSerViCeReqUeSt的出现次数.信令采集完全正常状况下的信令如下图：FTTtNbEbSERVICEftQFfte/U1.QxHSjtCCcnnectionRequestC1.CCCHU1.D07HRRCCccinectlonSetupRRCCmetlonSetupCoplcxeC1.(XXHSecur
5、itylodeCBndU1.WrHD1.DCCHO1.DCTHC1.DCCHSecurityIodeCoapleteRRCCcnetlonRecn118uratlonKRCCw-eatlonType4C1.BCCHChannSysteaInfoniationType13PtCOCHChlnrYPauneReqieftType2C1.BCVHCMnrRSyateInfomfttlonType2ter1.1.BCVHChannSySteInfomatlonType2quaterDCBrcHChanrjjSysteaInfomatlonType3C1.COiChannPaglneRequestTyp
6、e1凡1.runwt1.BlXHChanwyseaJrnOEQzgype4止仇,卜包啜出版0BSysteaInforBatlonType1一.功信ASCrVieURCQUe八IClServiceRequestD1.RXHCbannelSysteaInforiatlcciType2D1.CCCHChannelUiedlateAsslsnftentD1.SAOCHCbartwlSyeteaInf*aUy三teBInlonatlonType6AuthenticationRequestU1.SAOTHChannel(easureacntReportAuthenticationResponseD1.SA
7、BHCbawelJysxeBInfor*atinType5ClServiceAcceptSetypdStonetworkdlrectlcU1.SA(XHChaWl-asureentReportD1.SACCHChamelystcBInforaatlceiType5terCallProceedinfU1.SAOJHChannel*asureiCTitReportD1.SAXHChamelyteaIRfomaqlgType6U1.SAenReport2）、由于软件采集到的数据不完全，有时候应当出现的CMSerViCeRequest并没有上示出来,这种状况下就须要我们自己去推断CSFB是否胜利.推断
8、CSFB是否胜利,就百UE是否进入G网信道，占用到G河即可.所以统计的时候须要的未显示的胜利次数至动加上.CSFB胜利时CMServiceRequest未能正常示的信令截图;Dcch卜Mr-2-ffl4,XDOCHIyCCoroe:UWeyejRRe连授gift,有效的CSTO求XOXMCbumelSyjxeiInforBitlonType4C1.DCCHCTuraielXOOCHChuvwlU.RXHCbamelXKXMChimelU.OOCHChirmelK.KCHQuito】U.KXHChwnelU.CCCMCbtmelOtherCbamel111.DCCHOumel1.IKXHCHtf
9、rielT1.SACmChumelCCSAaHQUnneIU1.SAXHOUrmelECSAaHCbwwwltn.SACCHQunnelKSACCHChannelSyite*InfomtSonType3PgMReQ1.ettTypeISysteiInfonatlonType4Syne*InforBitlonType1PaGngRejestType1SyteTnfoiwatlonType2SysteInfoxtlonType3IBxedlateAsslpnentChirmelRequestCltfiBarkOunceCPtSSusperalyRequwtIeAsureientReportSyit
10、eiInfomaTlonTypeSterVevreaentReportSrStejlInfxationType6TW明已占用到XiIeisureientReportSysteaIMOEEgType5Jj1.SAHHQUnnelIeisureientReport3）、还有一种状况是UE发送息求并且RRC连接择放以后哦未能胜利占用到G网,就是CSFB不胜利.也就有UE发送的ExtendedServiceRequest.但因为未能回落到2G.所以就没方CMServiceRequest.假如UE发送的ExtendedServiceRequestjfJ1.RRC连接择放以后，并没彳iCMServiceR
11、equesttk）CMServiceAccept,而是伴随希位员更新，且在卜一次CSFB宏试恳求之前都没有占用到G网，就可以判定为此次CSFB失败。下图为CSFB失败信令故图:U1.DCCHU1.InfnationTransferIeasuretentReportSysteiInformationBlockTypelSyetciInfortationSyste*InformationSysteiInfonatinSysteiInformation一上国企I4CG”以口列BXHD1.三BXHD1.SCHDXHD1.SCHKCHD1.BXHD1.97HRRCConnectionRequestKRC
12、ConnectionSetupRRCCocinecticnSetupCcapleteU1.(XCHD1.OXHUE发送CSf皓成请求TAURfQU1.U1.D1.U1.M.DCCHWCHCCCHCCCHDCCHCCCHXU1.MU1.Inf0natlOnTranSferInfonatl0TransferInfonatloaiTransferInfatlgTransfer宣试请术之后伴辅的是位置更新柳C连授麻放.表明是有效的岩送清求U1.MCCCHDCCHPCCHU1.InfonatioeiTransfergcnncctloneeaseragingTAUTAUACCCXtP1.ETESSRVIC
13、ZREQmtiU1.1.V1.HW.CCCHU1.DCCHW.DCCHl11.CCCHD1.DCCHU1.DCCHD1.DCCHl11.CCHU1.DCCHmDCCHU1.IXHm.DCCHKrHD1.9iBCCHO1.灯KrHD1.SFKXHD1.BXHD1.灯BCCHD1.SCHKXHD1.XHBeCHD1.XHKrHD1.SNBXHD1.XWDHHD1.9/UECapabilityInfortationSecixrltylodeCbbandSecurityIodeCoapleteRRCCceinectionReconfigxxrationRRCComeInfomationSysteiIn
14、foniitlonSysteaInfomationBlockTypelgMTffnsnvMOO1.CCCHD1.OCCHU1.DCCHRRCConnectionRequestRRCCcnectlonSetupRRCConnectionSetupCcaplete3、CSFB试呼次数.信令中有效的ExtendedServiceRequest出现次数.也就是说CSFB试呼次数=CSFB兽试次数4, CSFB接通次数,接通次数就是UE进入2G网络后厥当接通的次数（干脆行信令中connect的条数即可）5, CSFB返回尝试次数.信令中ChanneIreIeaSe（侑道释放）的出现次数6、CSFB返回胜
15、利次数，伯令中TraCkingAreaUPdateACCePt的出现次数（即TAUACC出现次%）.须要留意的是TAUACC衣示位汉更新，但是在IJE中不只是异系统切换时才会发生位.置更新，跨TAC也会发生位置更新,所以推断CSFB返卜，I胜利次数不能单纯的依据TAUACC出现次数.只有当channelrelease出现后伴随的TAUACC才是CSFB返回胜利次数.而在TAUACC之时也必将伴随TAUREQ和TAUCOMP1.ETE.TAUREQ是位置更新型求.TAUACC是位置更新接入，TAUCoMPlrrE是位置更新完成，所以，当ChanneIreIeaSe出现后接着是TAUREQ再到TA
16、UACC最终TAUC。MPlETE才能驾是一次CSFB返回胜利，信令豉图如下：U1.DaHChannelChannelReleaseSysteiInfBatlonTyPe61.ocationPpdatlncIequeetSyteInfxnticnBlockTypelSyteInfonatlcoTAURBOD1.SAbIQunnelBXHDtM&XHCtSCB111.OCCHBXHCCXHD1.OCCHW.DCCHD1.DaH皿DCCHXDCCHm.DOCHD1.DCCM8XCCcmectlonReqetSyttoiInfonetlenComectlonSeuPBlCCorawctlonSetW
17、CoipleteSecurityodeCeaamdSecurity三deCoepleie诋ComectionRefSguratlnftCCoetlonRectIonTransferTAUACCTAUCCfP1.FTl把信令另存为excel衣格,筛选之后就可以很出观的看处CSFB返回胜利次数，经过筛选后的信令如下图CDEChmnelJBASIessazeD1.DCcaCbumel力11rzlReleaseTAURKQTAUACCTAU(XPlg11D1.DCCSCbvmelChannelReleaseTAUREQUVACC、TAU81F1.CTIC1.KXMChumelChtnnelReleas
18、eTAURfiQTAUACCUU(XiIP1.ETE、各算一次CSF冏成功KWVnWtClITAURQTNACCTAU(XHP1.tTID1.WC三Channel.n&nriReleaseTVREQD1.UAO;TADQ3IPUTl/D1.WC8CbvmelChannelReleaseTAUREQ/UVACCTA11CTJIPfFTT/当信令中TAUACC出现次数大于channelrelease.说明UEUViTAC发生位跣更新，筛选后的信令截图如下：【fBM回d团_IaStie2014-*-C611:35:05:634U.DCClChamelOurmlKeUt9201-6-11:33:06:
19、2342014-06-11:33:06:3242or*-gn：33：oe：32420l4*-gn：34:lT：0102014-5H:34:1T:60020M*(n：M:lT:?OO2014-511：34：1T:7OO2014-6-C621:35:41:71120M3ell；:42:Ml2014-511:35:42:8!20l4-C611:36:58:42：201-11:36:59:3412014-G511:36:59:34120i-C611:36:03:4201Y-g11:38:01:9992014-C-511:38:02:11920l3B11:38:02:119201-OG-11:38:09
20、:8192014-06-C6H:38:09:8T920l-ll:3e：09:8T92014-W11:38:14:4392014-06ll:38:14:55d201Vg11:38:14:W92014-6-5H:39:1T:O1T2014-C6Il:39:1七湖2Ql-g11:39:1T:即)X三Rt三C3FBtBRD1.DOClChtnnelChtrnelRelease达里有耳髭JHUTE至线能IfTAGa生的tu*更较ChwwlReleateC1.DOClCTumelChtrnelReleftieTlUUQTAUACCTWTAUUQTAUACCTAUQ2F1.f11TAOMQ-TlUHXIio0r11TAOMQTAOICCTinTaP1.gTTlUUQTADACCJAQCOOWtJtaoqTAOACCTAVCCWtfTlTMJUQIAUACCTiuxrrTlUIMTAUACC后面两次位置更新有UJ能是UE跨TAC产生的信令，这时就须要我们进到1.OG果面去看看UE当时是不是真的肉TACf.在统计CSFB返回胜利次数时这些位置更新忽视不计.
