信令流程.pptx
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1、信令流程主叫流程(一)MSBSCChannel activation ackChannel activationEncryption commandChannel requiredComplete Layer 3 Info.Authentication requestCall proceedingCipher Mode CompleteSABM(cm_serv_req)Immediate assign commandestablish indicationBTSChannel requestUA(cm_serv_req)Cipher Mode CommandImmediate assignme
2、nt MSCAuthentication responseSetupCipher Mode CommandCipher Mode Complete主叫流程(二)MSBSCBTSMSCAssignment RequestChannel activation ackAssignment commandestablish indicationAssignment CompleteAssignment CompleteDeactivate SACCHRelease requestRelease confirmRF Channle releaseRF Channel release ackAlertin
3、gConnectConnect acknowledgeSABMUAChannel activation主叫流程(三)MSBSCBTSMSCChannel ReleaseRelease CompleteReleaseClear CommandRF Channle releaseDISCDeactivate SACCHRF Channel release ackRelease IndicationUADisconnectClear Complete被叫流程(一)MSBSCBTSMSCChannel activation ackChannel activationEncryption command
4、Channel requiredComplete Layer 3 Info.Authentication requestCall confirmCipher Mode CompleteSABM(pag_resp)Immediate assign commandestablish indicationChannel requestUA(pag_resp)Cipher Mode CommandImmediate assignment Authentication responseSetupCipher Mode CommandCipher Mode CompletePaging CommandPa
5、ging RequestPaging被叫流程(二)MSBSCBTSMSCAssignment RequestChannel activation ackAssignment commandestablish indicationAssignment CompleteAssignment CompleteDeactivate SACCHRelease requestRelease confirmRF Channle releaseRF Channel release ackAlertingConnectConnect acknowledgeSABMUAChannel activation位置更新
6、流程(一)MSBSCChannel activation ackChannel activationEncryption commandChannel requiredComplete Layer 3 Info.Authentication requestTMSI reallocation completeCipher Mode CompleteSABM(loc_upd_req)Immediate assign commandestablish indicationBTSChannel requestUA(loc_upd_req)Cipher Mode CommandImmediate ass
7、ignment MSCAuthentication responseLocation updating acceptCipher Mode CommandCipher Mode Complete位置更新流程(二)MSBSCBTSMSCChannel ReleaseClear CommandRF Channle releaseDISCDeactivate SACCHRF Channel release ackRelease IndicationUAClear Complete切换流程小区内切换流程小区间切换流程外部切换流程小区内切换MSCBTSBSCMSSABM(FACCH)Measuremen
8、t resultChannel activation ackEstablish indicationRelease ConfirmationMeasurement reportAssigment complete(FACCH)HO PerformedRF Channel Release ACKAssigment command(FACCH)Release RequestRF Channel ReleaseChannel activationUA(FACCH)Receiver Ready(FACCH)小区间切换MSBSCBTS1BTS2Channel activationChannel acti
9、vation ackMeasurement resultHandover commandMeasurement reportHandover accessHandover completeSABMUAHandover completeHandover performed(to msc)Physical informationestablish indicationHandover detectionRelease RequestRelease ConfirmationRF Channel Release ACKRF Channel Release外部切换MSMSCBSS2BSS1Measure
10、ment Report(SACCH)BTS2BTS1Measurement ResultHandover RequiredHandover RequestChannel ActivationChannel Activation ACKHO Request ACKHandover CommandHandover Command(FACCH)Handover Access(FACCH)Handover DetectionHandover DetectionPhysical Information (FACCH)SABM(FACCH)Establish IndicationUA (FACCH)Han
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