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1、MSBSCChannelactivationackChannelactivationEncryptioncommandChannelrequiredCompleteLayer3Info.AuthenticationrequestCallproceedingCipherModeCompleteSABM(cm_serv_req)ImmediateassigncommandestablishindicationBTSChannelrequestUA(cm_serv_req)CipherModeCommandImmediatea
2、ssignmentMSCAuthenticationresponseSetupCipherModeCommandCipherModeComplete主叫流程之一主叫流程之二MSBSCBTSMSCAssignmentRequestChannelactivationackAssignmentcommandestablishindicationAssignmentCompleteAssignmentCompleteDeactivateSACCHReleaserequestReleaseconfirmRFChannlerelea
3、seRFChannelreleaseackAlertingConnectConnectacknowledgeSABMUAChannelactivationMSBSCBTSMSC主叫流程之三ChannelReleaseReleaseCompleteReleaseClearCommandRFChannlereleaseDISCDeactivateSACCHRFChannelreleaseackReleaseIndicationUADisconnectClearComplete被叫流程之一MSBSCBTSMSCChannela
4、ctivationackChannelactivationEncryptioncommandChannelrequiredCompleteLayer3Info.AuthenticationrequestCallconfirmCipherModeCompleteSABM(pag_resp)ImmediateassigncommandestablishindicationChannelrequestUA(pag_resp)CipherModeCommandImmediateassignmentAuthenticationre
5、sponseSetupCipherModeCommandCipherModeCompletePagingCommandPagingRequestPaging被叫流程之二MSBSCBTSMSCAssignmentRequestChannelactivationackAssignmentcommandestablishindicationAssignmentCompleteAssignmentCompleteDeactivateSACCHReleaserequestReleaseconfirmRFChannlerelease
6、RFChannelreleaseackAlertingConnectConnectacknowledgeSABMUAChannelactivationMSBSCChannelactivationackChannelactivationEncryptioncommandChannelrequiredCompleteLayer3Info.AuthenticationrequestTMSIreallocationcompleteCipherModeCompleteSABM(loc_upd_req)Immediateassign
7、commandestablishindicationBTSChannelrequestUA(loc_upd_req)CipherModeCommandImmediateassignmentMSCAuthenticationresponseLocationupdatingacceptCipherModeCommandCipherModeComplete位置更新流程之一MSBSCBTSMSC位置更新流程之二ChannelReleaseClearCommandRFChannlereleaseDISCDeactivateSACC
8、HRFChannelreleaseackReleaseIndicationUAClearCompleteMSBSCBTS1BTS2內(nèi)部切換流程ChannelactivationChannelactivationackMeasurementresultHandovercommandMeasurementreportHa
