有线接口信令协议课件

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1、上海大唐移动通信设备有限公司2003.12GSMGSM移动通信系统原理培训讲义移动通信系统原理培训讲义有线接口信令协议有线接口信令协议1AbisAbis接口信令接口信令2主叫流程（一）MSBSCChannel activation ackChannel activationChannel requiredCM service acceptCall proceedingSABM(cm_serv_req)Immediate assign commandestablish indicationBTSChannel requestUA(cm_serv_req)Immediate assignment

2、SetupData request(CM service accept)Data Ind(Setup)Data request(Call proceeding)3主叫流程（二）MSBSCBTSChannel activation ackAssignment commandestablish indicationAssignment CompleteDeactivate SACCHRelease request(local end rel)Release confirmRF Channle releaseRF Channel release ackAlertingConnectConnect a

3、cknowledgeSABMUAChannel activationData req.(Assignment command)Data Ind.(Assignment Complete)Data req.(Alerting)Data req.(Connect)Data Ind.(Connect acknowledge)4主叫流程（三）MSBSCBTSChannel ReleaseRelease CompleteReleaseRF Channle releaseDISCDeactivate SACCHRF Channel release ackRelease IndicationUADiscon

4、nectData Ind.(Disconnect)Data Req.(Release)Data Ind.(Release Complete)Data Req.(Channel Release)5主叫流程（四）MSBSCBTSChannel ReleaseRelease CompleteReleaseRF Channle releaseDISCDeactivate SACCHRF Channel release ackRelease IndicationUADisconnectData Ind.(Disconnect)Data Req.(Release)Data Ind.(Release Com

5、plete)Data Req.(Channel Release)6被叫流程（一）MSBSCBTSChannel activation ackChannel activationChannel requiredCall confirmSABM(pag_resp)Immediate assign commandestablish indicationChannel requestUA(pag_resp)Immediate assignment SetupCM service acceptPaging CommandPaging RequestData req.(CM service accept)

6、Data req.(Setup)Data ind.(Call confirm)7被叫流程（二）MSBSCBTSChannel activation ackAssignment commandestablish indicationAssignment CompleteDeactivate SACCHRelease requestRelease confirmRF Channle releaseRF Channel release ackAlertingConnectConnect acknowledgeSABMUAChannel activationData req.(Assignment c

7、ommand)Data ind.(Assignment Complete)Data ind.(Alerting)Data ind.(Connect)Data req.(Connect acknowledge)8小区间切换MSBSCBTS1BTS2Channel activationChannel activation ackMeasurement resultHandover commandMeasurement reportHandover accessHandover completeSABMUAData ind.(HO complete)Physical informationestab

8、lish indicationHandover detectionRelease Request(local)Release ConfirmationRF Channel Release ACKRF Channel ReleaseData req.(HO command)9A A 接接 口口 信信 令令10A接口信令11A接口信令MSBSSMSCASSIGNMENT REQUESTASSIGNMENT COMMANDASSIGNMENT COMPLETEASSIGNMENT COMPLETEASSIGNMENT REQUESTChannel TypePriorityCircuit Identi

9、ty Code(MSC Allocate)Downlink DTX FlagInterference Band To Be UsedClassmark Information 2ASSIGNMENT COMPLETERR CauseCircuit Identity CodeCell IdentifierChosen ChannelCircuit PoolSpeech Version(Chosen)Channel TypeSpeech/data indicator:Speech/Data/SignalingChannel rate and type:Full rate(Half rate)/SD

10、CCHPermitted speech version indication:FRV1/FRV2(EFR)PriorityPreemption Capability IndicatorPriority Level:114Queueing Allowed Indicator:Allowed/not AllowedPreemption Vulnerability IndicatorCircuit Identity Codea-k:PCM No.,max 2048xxxxx:timeslot No.Interference Band To Be Usedbitmap format for band1

11、band5RR CauseNormalCircuit PoolNo1:FRV1;FR Data 12/6/3.6kbit/sNo4:FRV2; FR Data 12/6/3.6kbit/sN05:FRV1;FRV2; FR Data 12/6/3.6kbit/sClassmark Information 2Phase1/Phase2 MSControlled Early Classmark Sending RF Power CapabilityPseudo Synchronization CapabilitySupplementary Service Screening IndicationM

12、T SMS pt. To pt. CapabilityFrequency Capability(GSM900 Extended?)A5/1;A5.2;A5/3Classmark 3 T1012A接口信令MSBSSMSCASSIGNMENT REQUESTASSIGNMENT COMMANDASSIGNMENT FAILUREASSIGNMENT FAILUREASSIGNMENT FAILURECauseRR CauseCircuit PoolCircuit Pool ListCauseRequested terrestrial resource unavailableRequested tr

13、anscoding/rate adaption availableRequested speech version unavailableCircuit pool mismatchSwitch circuit pool/Terrestrial circuit already allocatedEquipment failure/No radio resource available/O&M intervention Radio interface message failureRadio interface failure,reversion to old channelT10ASSIGNME

14、NT FAILUREASSIGNMENT FAILURE13A接口信令MSBSSMSCClear RequestCauseCauseRadio interface message failureO&M interventionProtocol error between BSS and MSCPreemptionCLEAR COMMANDCLEAR REQUESTCLEAR COMPLETEClear CommandCauseCauseCall controlO&M interventionEquipment failureHandover successfulProtocol error b

15、etween BSS and MSC14A接口信令Handover RequiredCauseResponse RequestCell Identifier List(Preferred)Circuit Pool ListCurrent ChannelSpeech Version(Used)Queueing IndicatorCauseUplink QualityUplink StrengthDownlink QualityDownlink StrengthDistanceBetter CellTrafficResponse toMSC InvocationDirected RetrySwit

16、ch Circuit PoolPreemptionO&M InterventionResponse RequestRequest HANDOVER REQUIRED REJECT if result in no handover Cell Identifier ListMax n,which is set by O&M,from 1 to 16, list is given in order of preferenceCauseO&M interventionEquipment failureRequested terrestrial resource unavailableInvalid m

17、essage contentsRequested transcoding/rate adaptation unavaliableCauseRequested terrestrial resource unavailable Ciphering algorithm not supported Requested transcoding/rate adaptation unavaliable Requested Speech version unavailableCircuit pool mismatch Switch circuit poolO&M interventionEquipment f

18、ailureNo radio resource available Invalid cellRadio interface failure,reversion to old channelTerrestrial resource already allocatedHandover RequestChannel TypeEncryption InformationClassmark Information 1 or 2Cell Identifier(Serving)PriorityCircuit Identity CodeDownlink DTX FlagCell Identifier(Targ

19、et)Interference Band To Be UsedCauseClassmark Information 3Current ChannelSpeech version(Used)Config. Evolution IndChosen Encryption Algorithm(Serving)Configuration Envolution IndicationSMI:Subsequent Modification Indication,whether modification is allowed or notClassmark Information 1Phase1/Phase2

20、MSControlled Early Classmark Sending RF Power CapabilityA5/1 Classmark Information 3Multi-bands supported,E-GSM/DCS1800/R-GSMRF Power Capability for each bandA5/4,A5/5,A5/6,A5/7UCS2Handover FailureCauseRR CauseCircuit PoolCircuit Pool ListHandover Required RejectCauseHandover Request ACKLayer3 Infor

21、mationChosen ChannelChosen Encryption AlgorithmCircuit PoolCircuit Identity CodeHandover CommandLayer3 InformationCell IdentifierMSBSSMSCHANDOVER REQUIREDHANDOVER REQUIED(1)T7HANDOVER COMMANDHANDOVER REQUIRED REJECTHANDOVER REQUESTBSSHANDOVER FAILUREHANDOVER REQUEST ACKT8HANDOVER COMMANDHANDOVER ACC

22、ESSHANDOVER DETECTHANDOVER COMPLETEHANDOVER COMPLETECLEAR COMMANDCLEAR COMPLETECLEAR REQUESTHANDOVER FAILURECLEAR COMMANDCLEAR COMPLETEHANDOVER FAILUREHandover DetectNo information element except for message typeHandover CompleteRR Cause15A接口信令Handover PerformedCauseCell IdentifierChosen ChannelChos

23、en Encryption AlgorithmSpeech Version(Chosen)MSBSSMSCT8HANDOVER COMMANDCLEAR COMMANDCLEAR COMPLETECLEAR REQUESTHANDOVER FAILUREHANDOVER ACCESSHANDOVER COMPLETEHANDOVER PERFORMEDCauseUplink QualityUplink StrengthDownlink QualityDownlink StrengthDistanceBetter CellTrafficDirected RetrySwitch Circuit P

24、oolPreemptionO&M Intervention16A接口信令Handover PerformedCauseCell IdentifierChosen ChannelChosen Encryption AlgorithmSpeech Version(Chosen)MSBSSMSCT10ASSIGNMENT COMMANDCLEAR COMMANDCLEAR COMPLETECLEAR REQUESTASSIGNMENT FAILUREASSIGNMENT COMPLETEHANDOVER PERFORMEDCauseUplink QualityUplink StrengthDownl

25、ink QualityDownlink StrengthSwitch Circuit PoolO&M Intervention17A接口信令MSBSSMSCPagingIMSITMSICell Identifier ListChannel NeededCell Identifier ListCell Identification discrimination:1.CGI2.LAC+CI3.CI4.No Cell5.LAI6.LAC7.All Cells on the BSSPAGINGPAGING REQUEST TYPE 1/2/3Channel NeededAny channel(defa

26、ult)SDCCHTCH/FTCH/H or TCH/F18A接口信令MSBSSMSCCM SERVICE REQUESTPAGING RESPONSECOMPLETE LAYER 3 INFORMATIONComplete Layer 3 InformationCell IdentifierLayer 3 InformationChosen ChannelCM REESTABLISHMENT REQUESTLOCATION UPDATING REQUESTIMSI DETACHExtract classmark information19A接口信令MSBSSMSCClassmark upda

27、teClassmark Information 2Classmark Information 3CLASSMARK REQUESTCLASSMARK ENQUIRYCLASSMARK CHANGECLASSMARK UPDATE(option suppress or delay)CLASSMARK UPDATE(handover)20A接口信令MSBSSMSCCipher Mode CommandEncryption InformationCipher Response ModeCIPHER MODE COMMANDCIPHERING MODE COMMANDCIPHERING MODE CO

28、MPLETECIPHER MODE COMPLETECIPHER MODE REJECTEncryption InformationPermitted algorithm:A5/1,A5/2, A5/3,A5/4, A5/5,A5/6, A5/7KeyCipher response ModeIMSI must (not) be included by MSCipher Mode RejectCauseCauseCiphering algorithm not supportedInvalid message contentsCipher Mode CompleteLayer 3 message

29、contentsChosen Encryption Algorithm21A接口信令BSSMSCASSIGNMENT REQUESTASSIGNMENT FAILUREQUEUING INDICATIONQueuing Indicationonly Message typeASSIGNMENT COMPLETECLEAR REQUEST(?)T11BSSMSCHANDOVER REQUESTHANDOVER FAILUREQUEUING INDICATIONHANDOVER REQUEST ACKHANDOVER FAILURETqho22A接口信令MSBSSMSCBLOCK/UNBLOCKB

30、LOCKCircuit Identity CodeCauseConnection Release RequestedCauseNo radio resource availableO&M intervention Equipment failureT1BLOCK/UNBLOCK ACKBLOCK/UNBLOCK ACKBLOCK/UNBLOCKT1Notify to O&MBLOCK/UNBLOCK ACKNOWLEDGECircuit Identity CodeUNBLOCKCircuit Identity Code23A接口信令MSBSSMSCCIRCUIT GROUP BLOCK/UNB

31、LOCKCIRCUIT GROUP BLOCKCauseCircuit Identity CodeCircuit Identity Code ListCauseNo radio resource availableO&M intervention Equipment failureT20CIRCUIT GROUP BLOCK/UNBLOCK ACKCIRCUIT GROUP BLOCK/UNBLOCK ACKCIRCUIT GROUP BLOCK/UNBLOCKT20Notify to O&MCIRCUIT GROUP BLOCK/UNBLOCK ACKNOWLEDGECircuit Iden

32、tity CodeCircuit Identity Code ListCIRCUIT GROUP UNBLOCKCircuit Identity CodeCircuit Identity Code ListCircuit Identity Code ListRange,Max 255,from CIC to CIC+255Status,no indication/block 24A接口信令MSBSSMSCBLOCK/UNBLOCKBLOCKCircuit Identity CodeCauseConnection Release RequestedCauseNo radio resource a

33、vailableO&M intervention Equipment failureT21BLOCK/UNBLOCK ACKBLOCK/UNBLOCK ACKBLOCK/UNBLOCKT21Notify to O&MBLOCK/UNBLOCK ACKNOWLEDGECircuit Identity CodeUNBLOCKCircuit Identity Code25A接口信令MSBSSMSCCIRCUIT GROUP BLOCK/UNBLOCKCIRCUIT GROUP BLOCKCauseCircuit Identity CodeCircuit Identity Code ListCause

34、No radio resource availableO&M intervention Equipment failureT22CIRCUIT GROUP BLOCK/UNBLOCK ACKCIRCUIT GROUP BLOCK/UNBLOCK ACKCIRCUIT GROUP BLOCK/UNBLOCKT22Notify to O&MCIRCUIT GROUP BLOCK/UNBLOCK ACKNOWLEDGECircuit Identity CodeCircuit Identity Code ListCIRCUIT GROUP UNBLOCKCircuit Identity CodeCir

35、cuit Identity Code ListCircuit Identity Code ListRange,Max 255,from CIC to CIC+255Status,no indication/block 26A接口信令MSBSSMSCRESOURCE REQUESTPeriodicity100ms25500msRESOURCE INDICATION(1/2/3/4)RESOURCE INDICATION(3)RESOURCE INDICATION(1) condition metPeriodResource RequestPeriodicityResource Indicatio

36、n MethodCell IdentifierExtended Resource IndicationResource Indication Method1:Spontaneous resource information expected 2:One single resource infoprmation expected3:Periodic resource information expected4: No resource information expectedExtended Resource IndicationSM:Subsequent Mode(only valid for

37、RIM=2)0-Method 41-if RIM of before is 1 or 3, no changed; otherwise, 4TARR:Total Accessible Resource RequestedResource AvaliableBand1Band5, number of idle FR/HRResource IndicationResource Indication MethodResource AvaliableCell IdentifierTotal Resource Accessible27A接口信令MSBSSMSCRESETResetCauseCauseO&

38、M intervention Equipment failureT13RESET ACKRESET (n)RESET (1)T16T1628A接口信令MSBSSMSCRESETResetCauseCauseO&M intervention Equipment failureT2RESET ACKRESET (n)RESET (1)T4T429A接口信令MSBSSMSCRESET CIRCUITReset CircuitCircuit Identity CodeCauseCauseO&M intervention Equipment failureRESET CIRCUIT ACKRESET C

39、IRCUIT(n)RESET CIRCUIT(1)T19T19UNEQUIPPED CIRCUITReset Circuit ACK/Unequipped CircuitCircuit Identity Code30A接口信令MSBSSMSCRESET CIRCUITReset CircuitCircuit Identity CodeCauseCauseO&M intervention Equipment failureRESET CIRCUIT ACKRESET CIRCUIT(n)RESET CIRCUIT(1)T12T12UNEQUIPPED CIRCUITReset Circuit A

40、CK/Unequipped CircuitCircuit Identity Code31A接口信令MSBSSMSCHANDOVER CANDIDATE ENQUIREHandover Candidate EnquireNumber of MSsCell Identifier ListCell IdentifierHANDOVER REQUIRED(1)HANDOVER REQUIRED(n)Handover Candidate ResponseNumber of MSsCell IdentifierHANDOVER CANDIDATE RESPONSE32A接口信令BSSMSCOverload

41、CauseOVERLOADCauseProcessor overloadO&M interventionOVERLOAD(ignored)T18T17OVERLOADDecrease random access traffic by 1 stepDecrease random access traffic by 1 stepIncrease random access traffic by 1 step33A接口信令BSSMSCOverloadCauseCell IdentifierOVERLOADCauseProcessor overloadO&M interventionCCCH over

42、loadOVERLOAD(ignored)T6T5OVERLOADDecrease MSC originated traffic by 1 stepDecrease MSC originated traffic by 1 stepIncrease MSC originated traffic by 1 step34A接口信令MSBSSMSCDTAP MESSAGE(SAPI in DLCI0)SAPI “n” RejectDLCICauseSAPI “n” REJECTCauseO&M interventionProcessor overloadBSS not equippedMS not e

43、quipped35A接口信令MSBSSMSCCONFUSIONConfusionCauseDiagnosticsCONFUSIONCauseInvalid message contentsInformation element or field missingIncorrect valueUnknown message typeUnknown information element Protocol error between BSS and MSCInvalid cellUNEQUIPPED CIRCUITUNEQUIPPED CIRCUITUnequipped CircuitCircuit

44、 Identity CodeCircuit Identity Code List36A接口信令BSSMSCBSSLOAD INDICATIONCauseO&M interventionEquipment failureNo radio resource availableProcessor overloadTraffic loadLoad IndicationTime IndicationCell IdentifierCell Identifier List(Target)Resource Situation(if without, the indicated cell is not able

45、 to perform incoming handover request)CauseLOAD INDICATIONTime Indication0:No value valid255:infiniteothers:10s2540sResource Situationnumber of SDCCH channel in each interference bandnumber of TCH/F channel in each interference band37A接口信令38MAP MAP 接接 口口 信信 令令39MAP所应用的接口VLR-HLR 用户信息、位置信息MSC-HLR 查询路由

46、VLR-VLR 用户信息MSC-MSC 切换、短消息MSC-EIR 设备鉴权40MAPGSM网移动系统实体归属位置寄存器(HLR)拜访位置寄存器(VLR)移动业务交换中心(MSC)设备识别积存器(EIR)关口局MSC(GMSC)41动态数据库VLRVLR (Visitor Location Register)：拜访位置寄存器。实际上是一个数据库，储存用户信息，主要包括：MSRN (Mobile Station Roaming Number) : 移动台漫游号码TMSI (Temporary Mobile Subscriber Identification) : 临时移动用户身份移动台登记的位置

47、区（LAC）与补充业务有关的数据可分配一个MSRN，还可以分配一个TMSI用于用户的身份保密。42静态数据库HLRHLR (Home Location Register)：归属位置寄存器。实际上是一个数据库，主要储存二类数据：用户数据，主要包括：用户的身份IMSI (International Mobile Subscriber Identification)用户ISDN号码VLR地址用户的位置信息43MAP的应用GSM NO.7信令网的等级结构HSTPHSTPHSTPLSTPLSTPSPSPSP44信令网和话路网的对应关系 TMSC1HSTPH&LSTPTMSC1TMSC2MSCLSTPTM

48、SC2MSC 话路 信令链 45信令网的寻址方式 MAP是专为GSM要求而设计的，是TCAP的一个客户，位于TCAP之上。MAP协议支持一个物理实体同时和几个物理实体的通信，主要功能是支持移动用户的位置登记、位置删除、用户业务管理、参数管理、漫游、越区切换、鉴权、保密数据传输等。 CIC表示该消息属于哪条话音电路（它的长度是12比特，因此一条数字信令链路理论上可载送212 =4096条话路的信令消息）。在GSM信令网SP、STP间传送MAP信令消息必须有SCCP的支持，SCCP的地址是由GT、DPC、SSN组成。46MAP支持的程序-位置登记/删除-切换-复原-操作维护-补充业务-短消息处理-

49、呼叫处理IMEI的管理47位置登记/删除 VLR HLR PVLRSend AuthenSend Authen AckUpdate-locationCancel-locationCancel-location AckInsert Sub.DataInsert Sub.Date AckUpdate-location Ack48故障后复原程序VLR复原 VLR HLRProvide Roaming NumberProvide Roaming Number Ack.Send AuthenticationSend Authentication Ack.Restore Data49故障后复原程序VLR复

50、原 Insert Sub. DataInsert Sub. Data AckRestore Data Ack.50故障后复原程序HLR复原 HLR VLR ResetUpdate LocationActive Trace ModeActive Trace Mode Ack.Insert Sub.DataInsert Sub.Data AckUpdate Location Ack51呼叫建立期间获得路由数据 GMSC HLR VLRSend Routing InformationSRI Ack.Provide Roaming NumberPRN Ack.52移动发起短消息业务传送 MSC/VLR

51、 HLR SCForward SMForward SM AckSend Routing InfoSend Routing Infor for SM Ack.53短消息提醒程序MSC/VLR HLR SCReady for SMReady for SM Ack.Alert SMCAlert SMC Ack.54位置更新过程VLRHLRVLRBSSVMSCUmABnewoldLoc updatecancellationId inquiringLocation Update 的起因：的起因：1） SIM卡第一次使用卡第一次使用2）位置区发生变化）位置区发生变化3）周期位置更新）周期位置更新4）IMS

52、I attach/detachDDG55位置更新流程 (1)在同一VLR/MSC中的位置更新MSVMSCVLRBSSLoc upd reqCmpl L3 InfoUpd loc area Authenticate Authentication reqAuthentication respAuthenticate ackFwd new TMSI ackCipher mode cmdCiphering mode cmdUpd loc area ackCiphering mode compCipher mode compLoc upd accTMSI reallocation cmpFwd new

53、TMSISet ciphering modeUpdate location areaTarget location area IdServing cell IdLocation update typeIMSITMSIPrevious location area IdUpdate location area ACKUser errorProvider errorUser errorunknown subscriberunknown location arearoaming not allowedillegal subscriberillegal equipmentsystem failure;A

54、uthenticateRANDCKSNAuthenticate ACKSRESSet Ciphering Modeciphering mode:no,A5/17KcForward New TMSITMSIForward New TMSI ACKProvider error56位置更新流程 (2)在新的VLR中的位置更新，原VLR可及MSVMSCVLRnBSSLoc upd reqUpd Loc area Auth.Auth. reqAuth. respAuth. ackSet ciph. modeCiph. Mode cmdCiph. mode cmdFWD new TMSICiph. mod

55、e cmpCiph. mode cmpLoc upd accFwd new TMSI ackTMSI reallocation cmpHLRUpd locUpd loc ackVLRoSend IdSend Id ackCancel location.Cancel location ackUpd Loc area ackSend IdentificationTMSISend Identification ackIMSIAuthentication setUser error:unidentified subscriberProvider errorUpdate locationIMSIMSC

56、addressVLR numberLMSIUpdate location ackHLR numberUser errorProvider errorUser errorunknown subscriberroaming not allowedsystem failure;unexpected data valueCancel locationIMSILMSICancel location ackUser error: unexpected data valueProvider errorInsert subs dataInsert subs data ackInsert subscriber

57、dataIMSIMSISDN CategorySubscriber statusBearer service listTeleservice list Fwd info listCall bar info listCUG info listSS-data listOperator determined barring general dataOperator determined barring HPLMN dataRoaming restriction due to unsupported featureRegional subscription dataVLR CAMEL subscrip

58、tion infoInsert subscriber data ackBearer service listTeleservice listOperator determined barring general dataSS code listRegional subscription responseSupported CAMEL phasesUser error:unidentified subscriber,data missing,unexpected data valueProvider errorCmpl L3 Info57位置更新流程 (3)在新的VLR中的位置更新，原VLR不可

59、及MSVMSCVLRnBSSLoc upd reqUpd Loc area Auth.Auth. reqAuth. respAuth. ackSet ciph. modeCiph. Mode cmdCiph. mode cmdFWD new TMSICiph. mode cmpCiph. mode cmpLoc upd accFwd new TMSI ackTMSI reallocation cmpHLRUpd locUpd loc ackVLRoCancel location.Cancel location ackUpd Loc area ackProvide IMSI ackIMSIuse

60、r error:absent subscriberProvider errorProvide IMSIID reqID respProvide IMSI ackSend Auth. infoSend Auth info ackInsert subs dataInsert subs data ackCmpl L3 Info58位置更新流程 (4)在新的VLR中的位置更新，原VLR可及，但信息丢失MSVMSCVLRnBSSLoc upd reqUpd Loc area Set ciph. modeCiph. Mode cmdCiph. mode cmdFWD new TMSICiph. mode

61、cmpCiph. mode cmpLoc upd accFwd new TMSI ackTMSI reallocation cmpHLRUpd locUpd loc ackVLRoCancel location.Cancel location ackUpd Loc area ackProvide IMSIID reqID respProvide IMSI ackSend IdSend Id ackAuth.Auth. reqAuth. respAuth. ackSend Auth. infoSend Auth info ackInsert subs dataInsert subs data a

62、ckCmpl L3 Info59位置更新流程 (5)在新的VLR中的位置更新，原VLR可及，但信息丢失MSVMSCVLRnBSSLoc upd reqLoc upd reqLoc area updAuth.Auth.Auth.Auth. respAuth. respAuth. ackSet ciph. modeStart cipheringCiph. mode cmdLoc upd accCiph. mode cmpCiph. mode cmpLoc upd accTMSI ackTMSI reallocation cmpHLRLoc upd reqLoc upd ackVLRoCancell

63、ation.Cancellation ackId req.Id req.Id req.Id respId respId respunknownId req.60IMSI Detach流程MSVMSCVLRBSSIMSI DetachCmpl L3 InfoDetach IMSI Detach IMSIIMSITMSI61清除MS流程MSVMSCVLRBSSPurge MS ack Purge MSIMSIVLR numberPurge MS MS没有在规定的时间里作周期性位置更新，或O&M操作清除MSPurge MS ackProvider error62移动主叫（MO）过程BSSVMSCVL

64、RVPLMN(visited)IAM（ISUP）SIFOCComplete callUmABIAM : Initial address messageISUP : ISDN user partSIFOC : Send information for outgoing call63MO 信令流程MSVMSCVLRBSSCM service reqProcess access reqAuthenticateAuthenticate requestAuthenticate respAuthenticate ackCM service acceptProcess access req acksetup

65、SIFOCComplete callAssignment requestAssignment cmdAssignment compAssignment completeCall proceedingIAMACMANMAlertConnectConnect ackCmpl L3 InfoProcess access requestCM service typeAccess connection statusCurrent location IDTMSI/IMSICKSNProcess access request ackIMSIMSISDNUser error:Provider errorUse

66、r errorunidentified subscriberillegal subscriberillegal equipmentroaming not allowedunknown location areasystem failureunexpected data valueSend information for outgoing callCalled numberBearer serviceTeleserviceCUG indexSuppress preferential CUGSuppress CUG outgoing accessComplete callMSISDNIMEICat

67、egoryGSM bearer capabilityISDN bearer capabilityISDN low layer compatibilityISDN high layer compatibilityCLIP provisionCLIR override provisionCLIR provisionCLIR modeCOLP provisionCOLR override provisionCOLR provisionNo Reply Condition TimerCUG indexCUG interlockCUG outgoing access Advice of Charge p

68、rovision64移动被叫（MT）过程BSSVMSCVLRVPLMNIAM (ISUP)SIFICPage/ackComplete callUmABGMSCHLRIAM(ISUP)Send routeing info/ackProvide roaming number/ackSIFIC : Send information for incoming call65GMSCVLRVMSCBSSMSIAMSIFICPage/Search MSPagingPaging requestPaging responseProcess access reqComplete callSetupCall con

69、fAssignment requestAss cmdAss cmpAssignment cmpAllertingACMConnectANMConnect ackComplete call ack移动被叫流程Cmpl L3 InfoProcess access req ackSend Information for Incoming CallMSRNBearer serviceTeleserviceDialled numberNumber of forwardingCUG interlockCUG outgoing accessPage IMSILocation area IDPage type

70、TMSISearch MSIMSIPage typeTMSI66MT获取路由信息GMSCVMSCVLRHLRSend Routing InfoIAMProvide Roaming NumberPRN ackSRI ackIAMSend Routing InformationInterrogation typeGMSC addressMSISDNAlerting PatternCUG interlockCUG outgoing accessNumber of forwardingISDN BCISDN LLCISDN HLCProvide Roaming NumberIMSIMSC number

71、MSISDNLMSIProvide Roaming Number ackRoaming numberUser errorProvider errorUser errorAbsent Subscriber;No Roaming Number Available;OR Not Allowed;Facility Not Supported;System Failure;Data Missing;Unexpected Data ValueSend Routing Information ackIMSIRoaming numberForwarded-to numberForwarded-to subad

72、dressNotification to calling partyForwarding reasonRedirecting presentationMSISDNCUG interlockCUG outgoing accessUser errorAbsent subscriberBearer service not provisioned;Call barred (Operator determined barring);CUG reject (Called party SS interaction violation);Data missingFacility not supported;F

73、orwarding violation Number changed;System FailureTeleservice not provisioned;Unexpected data value Unknown subscriber67江苏上海北京MSRN路由接续的机理TMSCMSC/VLRTMSCGMSCIAMHLRMSC/VLRTMSCMSC/VLR0210216495SRIPRN6495xxxx6485xxxxMSRNMSISDNMSRN64957700649577016495ABCD0123HLR号号68切换流程小区内切换流程小区间切换流程外部切换流程MSC间切换69小区内切换MSC

74、BTSBSCMSSABM(FACCH)Measurement resultChannel activation ackEstablish indicationRelease ConfirmationMeasurement reportAssigment complete(FACCH)HO PerformedRF Channel Release ACKAssigment command (FACCH)Release RequestRF Channel ReleaseChannel activationUA（FACCH）Receiver Ready(FACCH)70外部切换MSMSCBSS2BSS

75、1Measurement 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

76、 (FACCH)Handover Complete (FACCH)Receiver Ready (FACCH) Handover CompleteHandover CompleteClear CommandRelease RequestRelease ConfirmationRF Channel ReleaseRF CH Release ACKClear Command71MS/BSS-AMSC-AMSC-BBSS-B/MSVLR-BHO RequiredMSC间切换流程（一）Prepare Handover Target cell IDBSS APDUPrep HOAlloc HO numb

77、erHO RequestHO Request ackPrep HO ackSend HO reportIAMSend HO report ackACMHO CommandHO DetectProc access sigHO CompleteSend end sig reqClear CommandANSReleaseSend end sig ackSend Handover ReportHandover numberLinked IDPrepare Handover ackBSS APDUHandover numberUser errorProvider errorUser errorNo h

78、andover number availableSystem failureUnexpected data valueData missingProcess access signalBSS APDUSend end signalBSS APDUClear CompleteClear CommandClear Complete需要电路连接的需要电路连接的MSC间基本切换间基本切换72MSC间切换流程（二）不需要电路连接的不需要电路连接的MSC间基本切换间基本切换MS/BSS-AMSC-AMSC-BBSS-B/MSVLR-BHO RequiredPrep HOHO RequestHO Reque

79、st ackPrep HO ackHO CommandHO DetectProc access sigHO CompleteSend end sig reqClear CommandSend end sig ackClear CompleteClear CommandClear Complete73MS/BSS-AMSC-AMSC-BBSS-B/MSVLR-BHO RequiredMSC间切换流程（三）Prepare subsequent Handover Target cell IDTarget MSC numberBSS APDUPrep sub HOHO RequestHO Reques

80、t ackPrep sub HO ackHO CommandHO DetectHO CompleteClear CommandReleaseSend end sig ackUser errorUnkown MSCSubsequent handover failureUnexpected data valueData missingPrepare subsequent Handover ack User errorProvider errorClear CompleteMSC B切换回切换回MSC A，使用电路连接，使用电路连接74MS/BSS-AMSC-AMSC-BBSS-B/MSVLR-BH

81、O RequiredMSC间切换流程（四）Prep sub HOHO RequestHO Request ackPrep sub HO ackHO CommandHO DetectHO CompleteClear CommandSend end sig ackClear CompleteMSC B切换回切换回MSC A，不使用电路连接，不使用电路连接75MSC-AMSC-BBSS-B/MSMSC-CVLR-CHO RequiredMSC间切换流程（五）Prep sub HOHO RequestPrep HO ackSend HO reportIAMACMHO CommandHO DetectP

82、roc access sigHO CompleteSend end sig reqClear CommandANSReleaseSend end sig ackClear CompleteBSS-C/MSPrep HOAlloc HO numberHO Request ackSend HO report ackPrep sub HO ackReleaseSend end sig ackClear CmdClear CmplMSC B切换到切换到MSC C，使用电路连接，使用电路连接76MSC-AMSC-BBSS-B/MSMSC-CVLR-CHO RequiredMSC间切换流程（六）Prep

83、sub HOHO RequestPrep HO ackHO CommandHO DetectProc access sigHO CompleteSend end sig reqClear CommandSend end sig ackClear CompleteBSS-C/MSPrep HOHO Request ackPrep sub HO ackSend end sig ackClear CmdClear CmplMSC B切换到切换到MSC C，不使用电路连接，不使用电路连接77MSC间切换流程（七）不需要电路连接的不需要电路连接的MSC间基本切换后，建立电路连接间基本切换后，建立电路连接

84、MS/BSS-AMSC-AMSC-BBSS-B/MSVLR-BPrep HOAssignment RequestAssignment CmplPrep HO ackSend end sig ackClear CommandClear CompleteAlloc HO numberSend HO reportSend HO report ackIAMACMANSRelease78SDCCH上的短信主叫流程MSBTSChannel RequestRACHAGCHSDCCHSDCCHBSCMSCChannel RequestChannel ActiveChannel Active ACKImm. A

85、ssignmentSABM(CM-SERV-REQ)EST IND(CM-SERV-REQ)CR(CM-SERV-REQ)UA(CM-SERV-REQ)CC(AUTH-REQ)AUTH-REQAUTH-RESCIPH MODE CMDENCR CMDCIPH MODE CMDCIPH MODE CMPCIPH MODE CMPSABM(SAPI=3)EST IND(SAPI=3)UA(SAPI=3)CP-DATACP-ACKCP-DATACP-ACKClear CommandChannel ReleaseDEACT SACCHDISC(SAPI=0)Release IndicationUA(S

86、API=0)Local releaseSAPI=3Clear CompleteRF Channel ReleaseTo SCFrom SC79SDCCH上的短信被叫流程MSBTSPage RequestPCHAGCHSDCCHSDCCHBSCMSCPaging CommandChannel RequestChannel Active ACKImm. AssignmentSABM(Page Response)EST IND(Page Resp.)CR(Page Resp.)UA(Page Resp.)CC(AUTH-REQ)AUTH-REQAUTH-RESCIPH MODE CMDENCR CM

87、DCIPH MODE CMDCIPH MODE CMPCIPH MODE CMPSABM(SAPI=3)EST REQ(SAPI=3)UA(SAPI=3)CP-DATACP-ACKCP-DATACP-ACKClear CommandChannel ReleaseDEACT SACCHDISC(SAPI=0)Release IndicationUA(SAPI=0)Local releaseSAPI=3Clear CompleteRF Channel ReleasePagingChannel RequestChannel ActiveEST CONF(SAPI=3)CP-DATARACHFrom

88、SCTo SC80TCH上的短信主叫流程MSBTSFACCHFACCHSACCHBSCMSCTo SCACTIVE CALLACTIVE CALLCM SERV REQCM SERV ACCSABM(SAPI=3)EST IND(SAPI=3)UA(SAPI=3)CP-DATACP-ACKCP-DATACP-ACKFrom SC81TCH上的短信被叫流程MSBTSSACCHBSCMSCFrom SCACTIVE CALLACTIVE CALLSABM(SAPI=3)EST CONF(SAPI=3)UA(SAPI=3)CP-DATACP-ACKCP-DATACP-ACKTo SCEST REQ(

89、SAPI=3)CP-DATA82SDCCH上MSC间短信切换流程MSBTS-ACP-DATAMSC-BMSBSC-AMSC-ABSC-BBTS-BCP-ACKHANDO RQDPRE HANDOHANDO RQTCHAN ACTIVCHAN ACTIV ACKHANDO RQT ACKPRE HANDO ACKHANDO CMDHANDO CMDHANDO ACCHANDO DET Physical INFHANDO DETProcess AccessSignallingSABM(SAPI=0)UA(SAPI=0)HANDO COMPHANDO COMPSend end signalClear

90、 CMDRF CHAN RELRF CHAN REL ACKClear COMPForward Access SignallingCP-DATAEST REQ(3) SABM(SAPI=3)EST CONF(3) UA(SAPI=3)CP-DATAHANDO COMPCP-ACKProcess AccessSignallingTo SCFrom SCTo SC83SACCH上MSC间切换流程MSBTS-ACP-DATAMSC-BMSBSC-AMSC-ABSC-BBTS-BCP-ACKHANDO RQDPRE HANDOHANDO RQTCHAN ACTIVCHAN ACTIV ACKHANDO

91、 RQT ACKPRE HANDO ACKHANDO CMDHANDO CMDHANDO ACCHANDO DET Physical INFHANDO DETProcess AccessSignallingSABM(SAPI=0)UA(SAPI=0)HANDO COMPHANDO COMPSend end signalClear CMDRF CHAN RELRF CHAN REL ACKClear COMPForward Access SignallingCP-DATAEST REQ(3) SABM(SAPI=3)EST CONF(3) UA(SAPI=3)CP-DATAHANDO COMPC

92、P-ACKProcess AccessSignallingTo SCFrom SCTo SCIAMACMAnswer84优化中注意的问题1，不能建立呼叫或建立后即释放： 在主叫用户呼叫时，未得到被叫方的任何响应，双方的信令流程正常。在这种情况下，可以检查双方MSC设置的CIC是否规范，即双方的选线方式是否正确。根据DPC的值的大小来设置FIFO或LIFO,否则发生“同抢”会大大降低接通率。2，用户通话过程中由于频繁切换失败，造成大量掉话： 由于本MSC没有预留足够HO资源，这个问题可以从本局的局数据中得到确切结果。往往网络不断扩容，造成用户数增长很快，不能及时扩长HO数量。3，业务区边界存在单向切换： 在边界上双方小区的切换成功率为0，或相距较近的另一业务区小区发生不能切换的事件，则应该检查 该小区的LAC和CI是否在归属MSC中漏做。85优化中注意的问题4，建立呼叫后存在的“单通”现象过多： 往往问题出在传输的质量上面，而这一类问题看似简单，却经常出问题。原来比较好的条件，但由于维护的疏忽和网络改造，造成“自环”或“连接”松动，并且这部分电路未隔离，所以应仔细复查。8687