SignalProcessCallProcess(innetwork)Roaming(locationupdate)BaseTransceiverStation(BTS)BaseStationController(BSC)MSVisitorLocationRegister(VLR)HomeLocationRegister(HLR)MobileSwitchingCentre(MSC)PublicSwitchedTelephoneNetwork(PSTN)Iamnewinthisarea(TMSIandoldLAI)MSdetected(TMSIandoldLAI)MSdetected(TMSI)OK(IMSI)OKWelcome(newTMSIandnewLAI)VisitorLocationRegister(VLR)YourMSisinmyareaOK,hereisthesubscriberdataVLRorHLRstoresMSRN(MSRoamingNo.)VLRstoresLAI(LocationAreaIdentity)HLRstoresVLRforMSVLRstoressubscriberdata)))(((IncomingcallBaseTransceiverStation(BTS)BaseStationController(BSC)MSMobileSwitchingCentre(MSC)PSTNVisitorLocationRegister(VLR)GatewayMSC(GMSC)PSTNHomeLocationRegister(HLR)PagingTMSICallforMSRNCallforMSRNCallforMSISDNWhereisMSISDN?GetmeMSRNforMSISDNMSRNMSRNCanIuseacontrolchannel?UsethiscontrolchannelUsethistrafficchannelAnswerAnswer)))(((OutgoingcallfromMSBaseTransceiverStation(BTS)BaseStationController(BSC)MSMobileSwitchingCentre(MSC)PublicSwitchedTelephoneNetwork(PSTN)VisitorLocationRegister(VLR)CanImakeacall?OK,usethiscontrolchannelIneedservicexx(incl.tel.no.)(TMSI)CanMSuseservicexx?YesOK,andhereisatrafficchannelFirstaddressmessage)))(((Inter-MSChandoverBTSAMSBSCAMSCAVLRAPSTN(公共交換電話網(wǎng))BTSBBSCBMSCBVLRBBTSBisbetterHandoverrequiredHandoverrequiredHandoverrequiredOK(radiochannel)MSRN?MSRNOK(MSRNandradiochannel)AllocationoftrafficchannelHandover(radiochannel)OK)))((()))(((UseofChannel(inUm)Useofchannels-roamingBaseTransceiverStation(BTS)MSBCCH(LAI)RACH(canIgetacontrolchannel?)AGCH(usethisSDCCH)SDCCH(roaming;oldLAIandTMSI)SDCCH(newLAIandnewTMSI))))(((Useofchannels-outgoingcallBaseTransceiverStation(BTS)MSRACH(canIgetacontrolchannel?)AGCH(usethisSDCCH)SDCCH(servicerequest)SDCCH(OK))))(((SDCCH(calledno.)Useofchannels-incomingcallBaseTransceiverStation(BTS)MSPCH(paging)RACH(canIgetacontrolchannel?)AGCH(usethisSDCCH)SDCCH(pagingresponse-TMSI))))(((Useofchannels-handoverBaseTransceiverStation(BTS)MSSACCH(measurementreport)FACCH(handovercommand)FACCH(handovercomplete))))(((SignalProcess(BSS)MSBSCChannelactivationackChannelactivationEncryptioncommandChannelrequiredCompleteLayer3Info.AuthenticationrequestCallproceedingCipherModeCompleteSABM(cm_serv_req)ImmediateassigncommandestablishindicationBTSChannelrequestUA(cm_serv_req)CipherModeCommandImmediateassignmentMSCAuthenticationresponseSetupCipherModeCommandCipherModeCompleteOutgoingcall(Tobecontinued)MSBSCBTSMSCAssignmentRequestChannelactivationackAssignmentcommandestablishindicationAssignmentCompleteAssignmentCompleteDeactivateSACCHReleaserequestReleaseconfirmRFChannlereleaseRFChannelreleaseackAlertingConnectConnectacknowledgeSABMUAChannelactivationOutgoingcall(Tobecontinued)MSBSCBTSMSCChannelReleaseReleaseCompleteReleaseClearCommandRFChannlereleaseDISCDeactivateSACCHRFChannelreleaseackReleaseIndicationUADisconnectClearCompleteOutgoingcall(End)MSBSCBTSMSCChannelactivationackChannelactivationEncryptioncommandChannelrequiredCompleteLayer3Info.AuthenticationrequestCallconfirmCipherModeCompleteSABM(pag_resp)ImmediateassigncommandestablishindicationChannelrequestUA(pag_resp)CipherModeCommandImmediateassignmentAuthenticationresponseSetupCipherModeCommandCipherModeCompletePagingCommandPagingRequestPagingIncomingcall(Tobecontinued)MSBSCBTSMSCAssignmentRequestChannelactivationackAssignmentcommandestablishindicationAssignmentCompleteAssignmentCompleteDeactivateSACCHReleaserequestReleaseconfirmRFChannlereleaseRFChannelreleaseackAlertingConnectConnectacknowledgeSABMUAChannelactivationIncomingcall(End)MSBSCChannelactivationackChannelactivationEncryptioncommandChannelrequiredCompleteLayer3Info.AuthenticationrequestTMSIreallocationcompleteCipherModeCompleteSABM(loc_upd_req)ImmediateassigncommandestablishindicationBTSChannelrequestUA(loc_upd_req)CipherModeCommandImmediateassignmentMSCAuthenticationresponseLocationupdatingacceptCipherModeCommandCipherModeCompleteLocationupdate(Tobecontinued)MSBSCBTSMSCChannelReleaseClearCommandRFChannlereleaseDISCDeactivateSACCHRFChannelreleaseackReleaseIndicationUAClearCompleteLocationupdate(End)MSBSCBTS1BTS2ChannelactivationChannelactivationackMeasurementresultHandovercommandMeasurementreportHandoveraccessHandovercompleteSABMUAHandovercompleteHandoverperformed(tomsc)PhysicalinformationestablishindicationHandoverdetectionInter--BSChandover

MSMSCBSS1BSS2HandoverrequestHandoverrequiredHandoverrequestackHandovercommandHandoveraccessHandovercompleteSABMUAHandovercompleteClearcompletePhysicalinformationHandoverdetectClearcommandInter——MSChandover信道請求(ChannelRequest)ESTABLISHMENTCAUSE(3~6bit)RANDOMREFERENCE(5~2bit)信道要求(ChannelRequired)RequestReferenc(包括randomreference和部分幀號)AccessDelay(BTS測量得到的時(shí)延)信道激活(ChannelActivation)ChannelnumberActivationtype(3bit,立即指配、指配、切換等)ChannelMode(表示話音、數(shù)據(jù)或信令，以及相應(yīng)屬性)

ChannelIdentification(絕對頻道號或跳頻參數(shù))HandoverReference(條件：切換)

TimingAdvance(條件：小區(qū)內(nèi)信道改變)信道激活證實(shí)(ChannelActivationAck)

FrameNumber立即指配命令(Immediateassigncommand)

FullImm.AssignInfIMMEDIATEASSIGNIMMEDIATEASSIGNEXTENDEDIMMEDIATEASSIGNREJECT立即指配(ImmediateAssignment)PageMode(正常尋呼、擴(kuò)展尋呼、尋呼重組、不變)ChannelDescription(信道、絕對頻道號或跳頻參數(shù))RequestReferenceTimingAdvanceMobileAllocationCM業(yè)務(wù)請求(CMservicerequest)CMServicetype(移動(dòng)主叫、緊急呼、短消息業(yè)務(wù)等)CipheringkeysequencenumberMobilestationClassmark發(fā)射功率等級支持的加密算法偽同步能力短消息能力等MobileIdentity鑒權(quán)請求(Authenticationrequest)

CipheringkeysequencenumberAuthenticationparameterRAND鑒權(quán)響應(yīng)(Authenticationresponse)

AuthenticationparameterSRES加密模式命令(Ciphermodecommand)

EncryptionInformationCipherResponseMode(可選項(xiàng)，響應(yīng)消息中是否包含IMEI)加密模式完成(Ciphermodecomplete)MobileEquipmentIdentity(可選項(xiàng))

ChosenEncryptionAlgorithm(可選項(xiàng))建立(Setup)

Bearercapability

信息傳送能力、方式

編碼標(biāo)準(zhǔn)等CalledpartyBCD