call flow呼叫流程信令

MSCPSTNHLRGMSCMAP_SEND_ROUTING_INFORMATIONIAI(TUP)MSTerminatedCallProcedureVLRMAP_PROVIDE_ROAMING_NUMBERDCBMAP_PROVIDE_ROAMING_NUMBERACKMAP_SEND_ROUTING_INFORMATIONACKIAI(TUP)MAP_PAGEMAP_SEND_INFO_I/C_CALLMSMSCBTSBSCPaging(UDT)(IMSI/TMSI,LAIorCGI)PagingCommand(IMSI/TMSI,paggroup,ch)PagingRequest(L2-UI)(IMSI/TMSI)RR(PCH)RR(RACH)ChannelRequestChannelRequiredChannelActivationChannelActivationACKImmediateAssignmentRR(AGCH)(L2-UI)AinterfaceAbisinterfaceUminterfaceBSSMAPContinue1PagingRESP(L2-SABM)ESTIND(PagingResp)PagingRespCR(COMPL-L3-INFO)L2-UA(CKSN,MSID,CGI,CLrk2)CCRR(SDCCH)RR(SDCCH)BSSMAP

PagingMSTerminatedCallProcedureImmediateAssignCommandT3113+T3113-T3120+T3120-T3101+T3101-MM(SDCCH)MM(SDCCH)RR(SDCCH)DTAP-MMRR(SDCCH)DTAP-MMBSSMAPMSBTSDATAREQ<AUTH>AUTHREQUESTENCRCMDCIPHERMODCMDAbisinterfaceUminterfaceAUTHRESPONSEDATAIND<AUTH>CIPHERMODCOMMSCBSCAUTHREQUEST(DT1)(CKSN,RAND)AUTHRESPONSE(DT1)AinterfaceCIPHERMODCMD(DT1)(algonb,key)(SRES)DATAIND<CIPHMODCOM>CIPHERMODCOM(DT1)BSSMAPContinue2DATAREQTMSIREALCMDTMSIREALCOMDATAIND(newTMSI,LAI)<TMSIREALCMD><TMSIREALCOM>TMSIREALCOM(DT1)TMSIREALCMD(DT1)DTAP-MMDTAP-MMMM(SDCCH)MM(SDCCH)MSTerminatedCallProcedureVLRMAP_AUTHENTICATEMAP_AUTHENTICATEACKMAP_SET_CIPHERING_MODEMAP_FORWARD_NEW_TMSIMAP_FORWARD_NEW_TMSIACKBinterfaceT3260+T3260-MAP_PROCESS_ACCESS_REQMAP_PROCESS_ACCESS_REQ_ACKCC(SDCCH)CC(SDCCH)DTAP-CCDTAP-CCContinue3MSBTSDATAREQSET-UPAbisinterfaceUminterface

CALLCONFIRMEDDATAINDMSCBSCSET-UP(DT1)CALLCONF(DT1)Ainterface<SETUP><CALLCONF>T303+MSTerminatedCallProcedureT303-T310+VLRBinterfaceMAP_COMPLETE_CALLMSMSCBTSBSCASSIGNREQ(DT1)(Chtype,CIC,L3hd)PHYSCTXREQQUEUING(DT1)

ChannelACTIVDATAREQChannelActivationACKRELEASEREQASSIGNCOMRR(FACCH)AinterfaceAbisinterfaceUminterfaceBSSMAPContinue4PHYSCTXCONFBSSMAP(TCH)<ASSIGNCMD>ASSIGNCMDRR(SDCCH)(localend)(L2-SABM)ESTIND(L2-UA)RR(FACCH)RR(FACCH)DATAIND<ASSIGNCOM>ASSIGNCOM(DT1)RFCHANREL(SDCCH)BSSMAPRFCHANRELACK(BS/MSPOW,TA)Radio-resourceassignmentMSTerminatedCallProcedureCCTNT2+TNT2-T9103+T9103-CC(FACCH)CC(FACCH)DTAP-CCDTAP-CCMSALERTINGUminterfaceCONNECTMSCCONNECT(DT1)Continue5CONNECTACK(DT1)DTAP-CCBTSDATAINDAbisinterfaceDATAIND<ALERT><CONNECT>BSCALERTING(DT1)AinterfaceDATAREQ<CONNECTACK>CONNECTACKCC(FACCH)GMSCPSTNACM(TUP)ACM(TUP)ANC(TUP)ANC(TUP)MSTerminatedCallProcedureEinterfaceT310-T301+T301-T313-T313+MS(L2-UA)RR(FACCH)UmDTAP-CCContinue6DTAP-CCRELEASECC(FACCH)CHANREL(L2-DISC)RR(FACCH)RR(FACCH)BSSMAPRadio-resourcereleaseDISCONNECTCC(FACCH)RELEASECOMCC(FACCH)DTAP-CCBSSMAPBTSDATAIND<RELASECOM>RFCHANRELACKDEACTSACCHMSCBSCDISCONNECT(DT1)RELEASE(DT1)DATAREQDATAINDRELEASECOM(DT1)CLEARCMD(DT1)AAbis<REL>DATAREQCLEARCOM(DT1)RFCHANREL<DISC><CHANREL>RELIND<RLSD><RLC>(MobileReleaseFirst)GMSCPSTNCBK(TUP)CBK(TUP)CLF(TUP)CLF(TUP)RLG(TUP)RLG(TUP)MSTerminatedCallProcedureEDEACTSACCHACKT308+T308-TNT3+TNT3-T3109+T3109-T3111+T3111-MSMSCRELEASECOM(DT1)(L2-UA)RR(FACCH)UmDTAP-CCContinue7DTAP-CCRELEASECC(FACCH)CHANREL(L2-DISC)RR(FACCH)RR(FACCH)CLEARCOM(DT1)BSSMAPDISCONNECTCC(FACCH)RELEASECOMCC(FACCH)DTAP-CCBSSMAPBTSDATAREQDATAINDDATAREQAbis<REL><RELASECOM>DATAREQRFCHANRELRFCHANRELACKRadio-resourcerelease<DISC><CHANREL>DEACTSACCHRELINDBSCDISCONNECT(DT1)RELEASE(DT1)CLEARCMD(DT1)A<RLSD><RLC>(MobileReleaselast)GMSCPSTNCLF(TUP)CLF(TUP)RLG(TUP)RLG(TUP)MSTerminatedCallProcedureDEACTSACCHACKT305+T305-TNT3+TNT3-T3109-T3111+T3111-T3109+EMSMSCBTSBSCRR(RACH)ChannelRequestChannelRequiredChannelActivationChannelActivationACKImmediateAssignmentRR(AGCH)(L2-UI)AinterfaceAbisinterfaceUminterfaceMobile-OriginatingCallProcedureCMSERVREQ(L2-SABM)ESTIND<CMSERVREQ><CMSERVREQ>CR(COMPL-L3-INFO)L2-UA(CKSN,MSID,SERtype,CLmk)CCRR(SDCCH)RR(SDCCH)BSSMAPImmediateAssignCommand(SDCCHID)T3120+T3120-T3101+T3101-T303+VLRMAP_PROCESS_ACCESS_REQBinterfaceMobile-OriginatingCallProcedureMM(SDCCH)MM(SDCCH)RR(SDCCH)DTAP-MMRR(SDCCH)DTAP-MMBSSMAPMSBTSDATAREQ<AUTH>AUTHREQUESTENCRCMDCIPHERMODCMDAbisinterfaceUminterfaceAUTHRESPONSEDATAIND<AUTH>CIPHERMODCOMMSCBSCAUTHREQUEST(DT1)(CKSN,RAND)AUTHRESPONSE(DT1)AinterfaceCIPHERMODCMD(DT1)(algonb,key)(SRES)DATAIND<CIPHMODCOM>CIPHERMODCOM(DT1)BSSMAPContinue1DATAREQTMSIREALCMDTMSIREALCOMDATAIND(newTMSI,LAI)<TMSIREALCMD><TMSIREALCOM>TMSIREALCOM(DT1)TMSIREALCMD(DT1)DTAP-MMDTAP-MMMM(SDCCH)MM(SDCCH)VLRMAP_AUTHENTICATEMAP_AUTHENTICATEACKMAP_SET_CIPHERING_MODEMAP_FORWARD_NEW_TMSIMAP_FORWARD_NEW_TMSIACKBinterfaceT3260+T3260-MAP_PROCESS_ACCESS_REQ_ACKCC(SDCCH)CC(SDCCH)DTAP-CCDTAP-CCContinue2MSBTSDATAINDSET-UPAbisinterfaceUminterfaceCALLPROCEEDINGDATAREQMSCBSCSET-UP(DT1)CALLPROCEEDING(DT1)Ainterface<SETUP><CALLPROC>T303-T310+Mobile-OriginatingCallProcedureMAP_SEND_INFO_FOR_O/G_CALLVLRBinterfaceMAP_COMPLETE_CALLMSMSCBTSBSCASSIGNREQ(DT1)(Chtype,CIC,L3hd)PHYSCTXREQQUEUING(DT1)

ChannelACTIVDATAREQChannelActivationACKRELEASEREQASSIGNCOMRR(FACCH)AinterfaceAbisinterfaceUminterfaceBSSMAPContinue3PHYSCTXCONFBSSMAP(TCH)<ASSIGNCMD>ASSIGNCMDRR(SDCCH)(localend)(L2-SABM)ESTIND(L2-UA)RR(FACCH)RR(FACCH)DATAIND<ASSIGNCOM>ASSIGNCOM(DT1)RFCHANREL(SDCCH)BSSMAPRFCHANRELACK(BS/MSPOW,TA)Radio-resourceassignmentMobile-OriginatingCallProcedureCCT9103+T9103-TNT2+TNT2-CC(FACCH)CC(FACCH)DTAP-CCDTAP-CCMSALERTINGUminterfaceCONNECTMSCCONNECT(DT1)Continue4CONNECTACK(DT1)DTAP-CCBTSDATAREQAbisinterfaceDATAREQ<ALERT><CONNECT>BSCALERTING(DT1)AinterfaceDATAIND<CONNECTACK>CONNECTACKCC(FACCH)GMSCPSTNACM(TUP)ACM(TUP)ANC(TUP)Mobile-OriginatingCallProcedureIAI(TUP)IAI(TUP)ANC(TUP)EinterfaceT310-T313+T313-MSRR(FACCH)UmDTAP-CCContinue5DTAP-CCRELEASECC(FACCH)RR(FACCH)RR(FACCH)DISCONNECTCC(FACCH)RELEASECOMCC(FACCH)DTAP-CCBTSDATAIND<RELASECOM>MSCBSCDISCONNECT(DT1)RELEASE(DT1)DATAREQDATAINDRELEASECOM(DT1)AAbis<REL><DISC>(MobileReleaseFirst)GMSCPSTNMobile-OriginatingCallProcedureCLF(TUP)CLF(TUP)(L2-UA)CHANREL(L2-DISC)BSSMAPRadio-resourcereleaseBSSMAPRFCHANRELACKDEACTSACCHCLEARCMD(DT1)DATAREQCLEARCOM(DT1)RFCHANREL<CHANREL>RELIND<RLSD><RLC>RLG(TUP)RLG(TUP)EDEACTSACCHACKT305+T305-T308+T308-TNT3+TNT3-T3109+T3109-T3111+T3111-MSRR(FACCH)UmDTAP-CCContinue6DTAP-CCRELEASECC(FACCH)RR(FACCH)RR(FACCH)DISCONNECTCC(FACCH)RELEASECOMCC(FACCH)DTAP-CCBTSDATAREQ<RELASECOM>MSCBSCDISCONNECT(DT1)RELEASE(DT1)DATAINDDATAINDRELEASECOM(DT1)AAbis<REL><DISC>(MobileReleaseLast)GMSCPSTNMobile-OriginatingCallProcedureCLF(TUP)RLG(TUP)RLG(TUP)(L2-UA)CHANREL(L2-DISC)BSSMAPRadio-resourcereleaseBSSMAPRFCHANRELACKDEACTSACCHCLEARCMD(DT1)DATAREQCLEARCOM(DT1)RFCHANREL<CHANREL>RELIND<RLSD><RLC>CBK(TUP)CBK(TUP)CLF(TUP)EDEACTSACCHACKT3109+T305+T305-T308+T308-TNT3+TNT3-T3109-T3111+T3111-MSMSCBTSBSCRR(RACH)ChannelRequestChannelRequiredChannelActivationChannelActivationACKImmediateAssignmentRR(AGCH)(L2-UI)AinterfaceAbisinterfaceUminterfaceLOCUPDATREQESTIND<LOCUPAREQ><LOCUPDATREQ>CR(COMPL-L3-INFO)L2-UA(CKSN,MSID,LUT,LAI,CLmk1)CCRR(SDCCH)RR(SDCCH)BSSMAPImmediateAssignCommand(SDCCHID)(L2-SABM)INTRA_VLRLOCATIONUPDATINGORIMSIATTACH(inoldVLR)****:ThismessageissentbytheMStothenetworkeithertorequestupdateofitslocation(normalupdatingorperiodicupdating)ortorequestIMSIattach.T3120+T3120-T3101+T3101-T3210+Continue1MM(SDCCH)MM(SDCCH)RR(SDCCH)DTAP-MMRR(SDCCH)DTAP-MMBSSMAPMSBTSDATAREQ<AUTH>AUTHREQUESTENCRCMDCIPHERMODCMDAbisinterfaceUminterfaceAUTHRESPONSEDATAIND<AUTH>CIPHERMODCOMMSCBSCAUTHREQUEST(DT1)(CKSN,RAND)AUTHRESPONSE(DT1)AinterfaceCIPHERMODCMD(DT1)(algonb,key)(SRES)DATAIND<CIPHMODCOM>CIPHERMODCOM(DT1)BSSMAPDATAREQTMSIREALCMDTMSIREALCOMDATAIND(newTMSI,LAI)<TMSIREALCMD><TMSIREALCOM>TMSIREALCOM(DT1)TMSIREALCMD(DT1)DTAP-MMDTAP-MMMM(SDCCH)MM(SDCCH)VLRMAP_AUTHENTICATEMAP_AUTHENTICATEACKMAP_SET_CIPHERING_MODEBinterfaceT3260+T3260-MAP_UPDATE_LOCATION_AREAMAP_FORWARD_NEW_TMSIMAP_FORWARD_NEW_TMSIACKMAP_UPDATE_LOCATION_AREAACKINTRA_VLRLOCATIONUPDATINGORIMSIATTACH(inoldVLR)RR(SDCCH)Continue2MM(SDCCH)RR(SDCCH)RR(SDCCH)MSUmDTAP-MMLocUpdAccBTSMSCBSCLocUpdatAcc(DT1)DATAREQAAbis<LocUpdAcc>(L2-UA)CHANREL(L2-DISC)BSSMAPRadio-resourcereleaseBSSMAPRFCHANRELACKDEACTSACCHCLEARCMD(DT1)DATAREQCLEARCOM(DT1)RFCHANREL<CHANREL>RELIND<RLSD><RLC>DEACTSACCHACKINTRA_VLRLOCATIONUPDATINGORIMSIATTACH(inoldVLR)T3210-TNT3+TNT3-T3109+T3109-MSMSCBTSBSCRR(RACH)ChannelRequestChannelRequiredChannelActivationChannelActivationACKImmediateAssignmentRR(AGCH)(L2-UI)AinterfaceAbisinterfaceUminterfaceLOCUPDATREQ**ESTIND<LOCUPAREQ><LOCUPDATREQ>CR(COMPL-L3-INFO)L2-UA(CKSN,IMSI,LUT,LAI,CLmk1)CCRR(SDCCH)RR(SDCCH)BSSMAPImmediateAssignCommand(SDCCHID)(L2-SABM)INTER_VLRLOCATIONUPDATING(MSSendIMSI)ORIMSIATTACH(notinoldVLR)**:ThismessageissentbytheMStothenetworkeithertorequestupdateofitslocation(normalupdatingorperiodicupdating)ortorequestIMSIattach.T3120+T3120-T3101+T3101-T3210+Continue1MM(SDCCH)MM(SDCCH)RR(SDCCH)DTAP-MMRR(SDCCH)DTAP-MMBSSMAPMSBTSDATAREQ<AUTH>AUTHREQUESTENCRCMDCIPHERMODCMDAUTHRESPONSEDATAIND<AUTH>CIPHERMODCOMMSCBSCAUTHREQUEST(DT1)(CKSN,RAND)AUTHRESPONSE(DT1)ACIPHERMODCMD(DT1)(algonb,key)(SRES)DATAIND<CIPHMODCOM>CIPHERMODCOM(DT1)BSSMAPDATAREQTMSIREALCMDTMSIREALCOMDATAIND(newTMSI,LAI)<TMSIREALCMD><TMSIREALCOM>TMSIREALCOM(DT1)TMSIREALCMD(DT1)DTAP-MMDTAP-MMMM(SDCCH)MM(SDCCH)VLRMAP_AUTHENTICATEMAP_AUTHENTICATEACKMAP_SET_CIPHERING_MODET3260+T3260-MAP_UPDATE_LOCATION_AREAMAP_FORWARD_NEW_TMSIMAP_FORWARD_NEW_TMSIACKMAP_UPDATE_LOCATION_AREAACKHLRMAP_INSERT_SUBSCRIBER_DATAMAP_INSERT_SUBSCRIBER_DATAACKMAP_UPDATE_LOCATIONACKINTER_VLRLOCATIONUPDATING(MSSendIMSI)MAP_UPDATE_LOCATIONPVLRDAbisUmBDMAP_CANCEL_LOCATIONMAP_CANCEL_LOCATIONACKORIMSIATTACH(notinoldVLR)RR(SDCCH)Continue2MM(SDCCH)RR(SDCCH)RR(SDCCH)MSUmDTAP-MMLocUpdAccBTSMSCBSCLocUpdatAcc(DT1)DATAREQAAbis<LocUpdAcc>(L2-UA)CHANREL(L2-DISC)BSSMAPRadio-resourcereleaseBSSMAPRFCHANRELACKDEACTSACCHCLEARCMD(DT1)DATAREQCLEARCOM(DT1)RFCHANREL<CHANREL>RELIND<RLSD><RLC>DEACTSACCHACKINTER_VLRLOCATIONUPDATING(MSSendIMSI)ORIMSIATTACH(notinoldVLR)T3210-TNT3+TNT3-T3109+T3109-MSMSCBTSBSCRR(RACH)ChannelRequestChannelRequiredChannelActivationChannelActivationACKImmediateAssignmentRR(AGCH)(L2-UI)AinterfaceAbisinterfaceUminterfaceLOCUPDATREQESTIND<LOCUPAREQ><LOCUPDATREQ>CR(COMPL-L3-INFO)L2-UA(CKSN,TMSI,LUT,LAI,CLmk1)CCRR(SDCCH)RR(SDCCH)BSSMAPImmediateAssignCommand(SDCCHID)(L2-SABM)INTER_VLRLOCATIONUPDATING(MSSendTMSI)ORIMSIATTACH(notinoldVLR)T3120+T3120-T3101+T3101-T3210+Continue1MM(SDCCH)MM(SDCCH)RR(SDCCH)DTAP-MMRR(SDCCH)DTAP-MMBSSMAPMSBTSDATAREQ<AUTH>AUTHREQUESTENCRCMDCIPHERMODCMDAUTHRESPONSEDATAIND<AUTH>CIPHERMODCOMMSCBSCAUTHREQUEST(DT1)(CKSN,RAND)AUTHRESPONSE(DT1)ACIPHERMODCMD(DT1)(algonb,key)(SRES)DATAIND<CIPHMODCOM>CIPHERMODCOM(DT1)BSSMAPDATAREQTMSIREALCMDTMSIREALCOMDATAIND(newTMSI,LAI)<TMSIREALCMD><TMSIREALCOM>TMSIREALCOM(DT1)TMSIREALCMD(DT1)DTAP-MMDTAP-MMMM(SDCCH)MM(SDCCH)VLRMAP_AUTHENTICATEMAP_AUTHENTICATEACKMAP_SET_CIPHERING_MODET3260+T3260-MAP_UPDATE_LOCATION_AREAMAP_FORWARD_NEW_TMSIMAP_FORWARD_NEW_TMSIACKMAP_UPDATE_LOCATION_AREAACKHLRMAP_INSERT_SUBSCRIBER_DATAMAP_INSERT_SUBSCRIBER_DATAACKMAP_UPDATE_LOCATIONACKINTER_VLRLOCATIONUPDATING(MSSendTMSI)MAP_UPDATE_LOCATIONPVLRDAbisUmBDMAP_CANCEL_LOCATIONMAP_CANCEL_LOCATIONACKMAP_SEND_IDENTIFICATIONMAP_SEND_IDENTIFICATIONACKMAP_PROVIDE_IMSIMAP_PROVIDE_IMSIACKIdentityRequestIdentityResponseIncaseofIMSIcannotberetrievefromPVLRORIMSIATTACH(notinoldVLR)RR(SDCCH)Continue2MM(SDCCH)RR(SDCCH)RR(SDCCH)MSUmDTAP-MMLocUpdAccBTSMSCBSCLocUpdatAcc(DT1)DATAREQAAbis<LocUpdAcc>(L2-UA)CHANREL(L2-DISC)BSSMAPRadio-resourcereleaseBSSMAPRFCHANRELACKDEACTSACCHCLEARCMD(DT1)DATAREQCLEARCOM(DT1)RFCHANREL<CHANREL>RELIND<RLSD><RLC>DEACTSACCHACKINTER_VLRLOCATIONUPDATING(MSSendTMSI)ORIMSIATTACH(notinoldVLR)T3210-TNT3+TNT3-T3109+T3109-MSCABTSBSCIntra_CellHandOverA-bisUmMSRR(SACCH)RR(FACCH)L2-SABML2-UIASSIGNCOM<L2-UI>MEASREPMEASREPCHANACTIV(chtyp,CiphK)(HORef)CHANACTACKDATAREQ<ASSIGNCMD>ASSIGNCMDRR(NewFACCH)DATAINDESTINDRFCHAREL(oldTCH)HOPERFOMED(DT1)(Cause:intra_cell)BSSMAP<ASSIGNCOM>RFCHARELACKOldchannellocalendreleaseRR(FACCH)RR(FACCH)T3107+T3107-MSCABTS2BTS1BSCIntra-BSSHandoverA-bisUm<HOCOMPL>MSHOACCESSRR(SACCH)HOACCESSPHYSINFOPHYSINFORR(FACCH)L2-SABML2-UIRR(NewFACCH)HOCOMPLETA-bis<L2-UI>MEASREPMEASREPCHANACTIV(chtyp,CiphK)(HORef)CHANACTACKDATAREQ<HOCMD>HOCOMMANDHODETECTESTAINDDATAINDRFCHAREL(oldTCH)HOPERFOMED(DT1)(Cause)BSSMAPRFCHARELACKRR(FACCH)BSSMAPRR(FACCH)RR(FACCH)RR(FACCH)RR(FACCH)RR(FACCH)T3103+T3103-T3124+T3124-CHANACTIVBTS1A-bisDATAREQBSC2CCBSC1HOREQU(DT1)AHOCMD(DT1)MSCHOREQUEST(DT1)AHOCOMMANDBTS2MSMEASREPCHAACTACKIntra-MSCHandoverServingBSSA-bisUmTargetBSS<L2-UI>RR(SACCH)MEASRESCellIdlst,CauseBSSMAPCR(Chtyp,Clmk) (Cell,CiphK)BSSMAPHOREQACK(DT1)(Cell,ChInf,HoRef)BSSMAPBSSMAP<HOCMD>RR(FACCH)BSSMAPT7+T7-T8+T101+T101-T102+T9113+HODETECTBTS1A-bisRFCHANRELBSC2BSC1ACLEARCMD(DT1)MSCABTS2MSHOACCESSServingBSSA-bisUmTargetBSSRR(newFACCH)HOCOMPLET(DT1)BSSMAPBSSMAP(oldTCH)Continue1HOACCESSRR(FACCH)PHYSINFOPHYSINFOL2-SABML2-UIESTAINDHOCOMPLETDATAIND<HOCOMPL>CLEARCMP(DT1)BSSMAP<RLSD><RLC>Intra-MSCHandoverRFCHANRELACKRR(FACCH)RR(FACCH)RR(FACCH)RR(FACCH)RR(FACCH)T3124+T3124-T9113-T102-T8-TNT3+TNT3-Inter-MSCHandoverMSCAABTSABSCAA-bisUmMSRR(SACCH)<L2-UI>MEASREPMEASREPHOREQU(DT1)CellIdlst,CauseMSCBVLRBEBMAP_PREPARE_HANDOVERMAP_ALLOCATE_HO_NUMBERMAP_SEND_HO_REPORTMAP_PREPARE_HANDOVERACKMAP_SEND_HO_REPORTACKIAM(TUP)ACM(TUP)HOCMD(DT1)(Cell,ChInf,HoRef)DATAREQ<HOCMD>HOCOMMANDRR(FACCH)BSSMAPBSSMAPRFCHAREL(oldTCH)RFCHARELACKAfterHOSucceedBSCBBSSMAPHOREQ(DT1)CHANACTIVCCCHAACTACKCR(Chtyp,Clmk) (Cell,CiphK)HOREQACK(DT1)BSSMAPBTSBBTSABSCACLEARCMD(DT1)BSSMAPCLEARCMP(DT1)BSSMAP<HORequest><HORequestACK>T201+T201-T210+TNT3+TNT3-T103+T204+T210-Inter-MSCHandoverContinue1MSCBABTSBBSCBA-bisUmMSHOCOMMPLETE(DT1)(Cause)BSSMAPMSCAVLRBEBRR(NewFACCH)HODETECTIONHOACCESSPHYSINFOPHYSINFOL2-SABML2-UIESTAINDHOCOMPLETDATAIND<HOCOMPL>HOACCESSANC(TUP)MAP_SEND_END_SIGNALRR(FACCH)MAP_PROCESS_ACCESS_SIGNALLINGRR(FACCH)RR(FACCH)RR(FACCH)RR(FACCH)RR(FACCH)HODETECT(DT1)BSSMAP<HODetect><HOComplete>T204-T103-SubsequentInter-MSCHandoverMSCBABTSBBSCBA-bisUmMSRR(SACCH)<L2-UI>MEASREPMEASREPHOREQU(DT1)CellIdlst,CauseMSCAVLRCEBMAP_PREPARE_HANDOVERMAP_ALLOCATE_HO_NUMBERMAP_SEND_HO_REPORTMAP_PREPARE_HANDOVERACKMAP_SEND_HO_REPORTACKIAM(TUP)ACM(TUP)HOCMD(DT1)(Cell,ChInf,HoRef)DATAREQ<HOCMD>HOCOMMANDRR(FACCH)BSSMAPBSSMAPRFCHAREL(oldTCH)RFCHARELACKAfterHOSucceedBSCCBSSMAPHOREQ(DT1)CHANACTIVCCCHAACTACKCR(Chtyp,Clmk) (Cell,CiphK)HOREQACK(DT1)BSSMAPBTSCBTSBBSCBCLEARCMD(DT1)BSSMAPCLEARCMP(DT1)BSSMAP<HORequest><HORequestACK>MAP_PREPARE_Subs_HANDOVERMSCC<HORequest>MAP_PREPARE_Subs_HANDOVERACKET201+T201-T210+TNT3+TNT3-T210-T204+T103+Continue1MSCCABTSCBSCCA-bisUmMSHOCOMMPLETE(DT1)(Cause)BSSMAPMSCAMSCBEBRR(NewFACCH)HODETECTIONHOACCESSPHYSINFOPHYSINFOL2-SABML2-UIESTAINDHOCOMPLETDATAIND<HOCOMPL>HOACCESSANC(TUP)MAP_SEND_END_SIGNALRR(FACCH)MAP_PROCESS_ACCESS_SIGNALLINGRR(FACCH)RR(FACCH)RR(FACCH)RR(FACCH)RR(FACCH)HODETECT(DT1)BSSMAP<HODetect><HOComplete>SubsequentInter-MSCHandoverMAP_SEND_END_SIGNALACKREL(TUP)RLC(TUP)T204-T103-SubsequentInter-MSCHandbackMSCBABTSBBSCBA-bisUmMSRR(SACCH)<L2-UI>MEASREPMEASREPHOREQU(DT1)CellIdlst,CauseMSCAVLRAEBMAP_PREPARE_Subs_HANDOVERMAP_ALLOCATE_HO_NUMBERMAP_SEND_HO_REPORTMAP_PREPARE_Subs_HANDOVERACKMAP_SEND_HO_REPORTACKHOCMD(DT1)(Cell,ChInf,HoRef)DATAREQ<HOCMD>HOCOMMANDRR(FACCH)BSSMAPBSSMAPRFCHAREL(oldTCH)RFCHARELACKAfterHOSucceedBSCABSSMAPHOREQ(DT1)CHANACTIVCCCHAACTACKCR(Chtyp,Clmk) (Cell,CiphK)HOREQACK(DT1)BSSMAPBTSABTSBBSCBCLEARCMD(DT1)BSSMAPCLEARCMP(DT1)BSSMAP<HORequest><HORequestACK>T104+Continue1MSCAABTSABSCAA-bisUmMSHOCOMMPLETE(DT1)(Cause)BSSMAPMSCBERR(NewFACCH)HODETECTIONHOACCESSPHYSINFOPHYSINFOL2-SABML2-UIESTAINDHOCOMPLETDATAIND<HOCOMPL>HOACCESSREL(TUP)MAP_SEND_END_SIGNALACKRR(FACCH)RR(FACCH)RR(FACCH)RR(FACCH)RR(FACCH)RR(FACCH)<HOComplete>SubsequentInter-MSCHandbackRLC(TUP)T104-MSMSCBTSBSCRR(RACH)ChannelRequestChannelRequiredChannelActivationChannelActivationACK<IMMASSIGNMENT>

ImmediateAssignmentRR(AGCH)(L2-UI)AinterfaceAbisinterfaceUminterfaceIMSIDETACHIMSIDETACHIND

ESTIND<IMSIDETACHIND>CR(COMPL-L3-INFO)L2-UA(MSID)RR(SDCCH)RR(SDCCH)BSSMAPUNITDATAREQ(SDCCHID)(L2-SABM)VLRBinterface<IMSIDETACHIND>MAP_DETACH_IMSI****:IfnoRRconnectionexists,theMMsublayerwithinthemobilestationwillrequesttheRRsublayertoestablishaRRconnection.IfestablishmentoftheRRconnectionisnotpossiblebecauseasuitablecellisnot(ornotyet)availablethen,themobilestationshalltryforaperiodofatleast5secondsandfornotmorethanaperiodof20secondstofindasuitablecell.Ifasuitablecellisfoundduringthistimethen,themobilestationshallrequesttheRRsublayertoestablishanRRconnection,otherwisetheIMSIdetachisaborted.IfaRRconnectionexists,theMMsublayerwillreleaselocallyanyongoingMMconnectionsbeforetheIMSIDETACHINDmessageissent.RR(SDCCH)RR(SDCCH)RR(SDCCH)MSUmBTSMSCBSCAAbis(L2-UA)CHANREL(L2-DISC)BSSMAPRadio-resourcereleaseBSSMAPRFCHANRELACKDEACTSACCHCLEARCMD(DT1)DATAREQCLEARCOM(DT1)RFCHANREL<CHANREL>RELIND<RLSD><RLC>DEACTSACCHACKIMSIDETACHContinue1MSMSCBTSBSCRR(RACH)ChannelRequestChannelRequiredChannelActivationChannelActivationACKImmediateAssignmentRR(AGCH)(L2-UI)AAbisUminterfaceMobile-OriginatingSMSProcedureCMSERVREQ(L2-SABM)ESTIND<CMSERVREQ><CMSERVREQ>CR(COMPL-L3-INFO)L2-UA(CKSN,MSID,SERtype,CLmk)CCRR(SDCCH)RR(SDCCH)BSSMAPImmediateAssignCommand(SDCCHID)MAP_PROCESS_ACCESS_REQVLRMobile-OriginatingSMSProcedureMM(SDCCH)MM(SDCCH)RR(SDCCH)DTAP-MMRR(SDCCH)DTAP-MMBSSMAPMSBTSDATAREQ<AUTH>AUTHREQUESTENCRCMDCIPHERMODCMDAbisinterfaceUminterfaceAUTHRESPONSEDATAIND<AUTH>CIPHERMODCOMMSCBSCAUTHREQUEST(DT1)(CKSN,RAND)AUTHRESPONSE(DT1)AinterfaceCIPHERMODCMD(DT1)(algonb,key)(SRES)DATAIND<CIPHMODCOM>CIPHERMODCOM(DT1)BSSMAPContinue1UA(SAPI=3)ESTIND(SAPI=3)RR(SDCCH)VLRMAP_AUTHENTICATEMAP_AUTHENTICATEACKMAP_SET_CIPHERING_MODEBinterfaceT326