GSM信令流程-英文版

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(公共交换电话网)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信道请求(ChannelRequest)ESTABLISHMENTCAUSE(3~6bit)RANDOMREFERENCE(5~2bit)信道要求(ChannelRequired)RequestReferenc(包括randomreference和部分帧号)AccessDelay(BTS测量得到的时延)信道激活(ChannelActivation)ChannelnumberActivationtype(3bit,立即指配、指配、切换等)ChannelMode(表示话音、数据或信令，以及相应属性)

ChannelIdentification(绝对频道号或跳频参数)HandoverReference(条件：切换)

TimingAdvance(条件：小区内信道改变)信道激活证实(ChannelActivationAck)

FrameNumber立即指配命令(Immediateassigncommand)

FullImm.AssignInfIMMEDIATEASSIGNIMMEDIATEASSIGNEXTENDEDIMMEDIATEASSIGNREJECT立即指配(ImmediateAssignment)PageMode(正常寻呼、扩展寻呼、寻呼重组、不变)ChannelDescription(信道、绝对频道号或跳频参数)RequestReferenceTimingAdvanceMobileAllocationCM业务请求(CMservicerequest)CMServicetype(移动主叫、紧急呼、短消息业务等)CipheringkeysequencenumberMobilestationClassmark发射功率等级支持的加密算法伪同步能力短消息能力等MobileIdentity鉴权请求(Authenticationrequest)

CipheringkeysequencenumberAuthenticationparameterRAND鉴权响应(Authenticationresponse)

AuthenticationparameterSRES加密模式命令(Ciphermodecommand)

EncryptionInformationCipherResponseMode(可选项，响应消息中是否包含IMEI)加密模式完成(Ciphermodecomplete)MobileEquipmentIdentity(可选项)

ChosenEncryptionAlgorithm(可选项)建立(Setup)

Bearercapability

信息传送能力、方式

编码标准等CalledpartyBCD