【文章內(nèi)容簡(jiǎn)介】 Total Resource Accessible27A接口信令MS BSS MSCRESETResetCauseCauseOM intervention Equipment failureT13 RESET ACKRESET (n)RESET (1)T16T1628A接口信令MS BSS MSCRESETResetCauseCauseOM intervention Equipment failureT2 RESET ACKRESET (n)RESET (1)T4T429A接口信令MS BSS MSCRESET CIRCUITReset CircuitCircuit Identity CodeCauseCauseOM intervention Equipment failureRESET CIRCUIT ACKRESET CIRCUIT(n)RESET CIRCUIT(1)T19T19UNEQUIPPED CIRCUITReset Circuit ACK/Unequipped CircuitCircuit Identity Code30A接口信令MS BSS MSCRESET CIRCUITReset CircuitCircuit Identity CodeCauseCauseOM intervention Equipment failureRESET CIRCUIT ACKRESET CIRCUIT(n)RESET CIRCUIT(1)T12T12UNEQUIPPED CIRCUITReset Circuit ACK/Unequipped CircuitCircuit Identity Code31A接口信令MS BSS MSCHANDOVER 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BSS MSCOverloadCauseOVERLOADCauseProcessor overloadOM 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BSS MSCOverloadCauseCell IdentifierOVERLOADCauseProcessor overloadOM interventionCCCH overloadOVERLOAD(ignored)T6T5OVERLOADDecrease MSC originated traffic by 1 stepDecrease MSC originated traffic by 1 stepIncrease MSC originated traffic by 1 step34A接口信令MS BSS MSCDTAP MESSAGE(SAPI in DLCI?0)SAPI “n” RejectDLCICauseSAPI “n” REJECTCauseOM interventionProcessor overloadBSS not equippedMS not equipped35A接口信令MS BSS MSCCONFUSIONConfusionCauseDiagnosticsCONFUSIONCauseInvalid message contentsInformation element or field missingIncorrect valueUnknown message typeUnknown information element Protocol error between BSS and MSCInvalid cellUNEQUIPPED CIRCUITUNEQUIPPED CIRCUITUnequipped CircuitCircuit Identity CodeCircuit Identity Code List36A接口信令BSS MSC BSSLOAD INDICATIONCauseOM interventionEquipment failureNo radio resource availableProcessor overloadTraffic loadLoad IndicationTime IndicationCell IdentifierCell Identifier List(Target)Resource Situation(if without, the indicated cell is not able to perform ining handover request)CauseLOAD INDICATIONTime Indication0:No value valid255:infiniteothers:10s~2540sResource Situationnumber of SDCCH channel in each interference bandnumber of TCH/F channel in each interference band37A接口信令38MAP 接接 口口 信信 令令39MAP所應(yīng)用的接口? VLRHLR 用戶信息、位置信息? MSCHLR 查詢路由? VLRVLR 用戶信息? MSCMSC 切換、短消息? MSCEIR 設(shè)備鑒權(quán)40MAP? GSM網(wǎng)移動(dòng)系統(tǒng)實(shí)體? 歸屬位置寄存器 (HLR)? 拜訪位置寄存器 (VLR)? 移動(dòng)業(yè)務(wù)交換中心 (MSC)? 設(shè)備識(shí)別積存器 (EIR)? 關(guān)口局 MSC(GMSC) 41動(dòng)態(tài)數(shù)據(jù)庫(kù) VLR? VLR (Visitor Location Register)：拜訪位置寄存器。實(shí)際上是一個(gè)數(shù)據(jù)庫(kù)，儲(chǔ)存用戶信息，主要包括：– MSRN (Mobile Station Roaming Number) : 移動(dòng)臺(tái)漫游號(hào)碼– TMSI (Temporary Mobile Subscriber Identification) : 臨時(shí)移動(dòng)用戶身份– 移動(dòng)臺(tái)登記的位置區(qū)（ LAC）– 與補(bǔ)充業(yè)務(wù)有關(guān)的數(shù)據(jù)? 可分配一個(gè) MSRN，還可以分配一個(gè) TMSI用于用戶的身份保密。42靜態(tài)數(shù)據(jù)庫(kù) HLR? HLR (Home Location Register)：歸屬位置寄存器。實(shí)際上是一個(gè)數(shù)據(jù)庫(kù)，主要儲(chǔ)存二類數(shù)據(jù)：– 用戶數(shù)據(jù)，主要包括：? 用戶的身份 IMSI (International Mobile Subscriber Identification)? 用戶 ISDN號(hào)碼? VLR地址– 用戶的位置信息43MAP的應(yīng)用? GSM HSTP HSTP HSTPLSTP LSTPSPSP SP44信令網(wǎng)和話路網(wǎng)的對(duì)應(yīng)關(guān)系? TMSC1 HSTP HLSTP TMSC1TMSC2MSCLSTP TMSC2MSC 話路 信令鏈 45信令網(wǎng)的尋址方式? MAP是專為 GSM要求而設(shè)計(jì)的，是 TCAP的一個(gè)客戶，位于 TCAP之上。 MAP協(xié)議支持一個(gè)物理實(shí)體同時(shí)和幾個(gè)物理實(shí)體的通信，主要功能是支持移動(dòng)用戶的位置登記、位置刪除、用戶業(yè)務(wù)管理、參數(shù)管理、漫游、越區(qū)切換、鑒權(quán)、保密數(shù)據(jù)傳輸?shù)取? CIC表示該消息屬于哪條話音電路（它的長(zhǎng)度是 12比特，因此一條數(shù)字信令鏈路理論上可載送 212 =4096條話路的信令消息）。 在 GSM信令網(wǎng) SP、 STP間傳送 MAP信令消息必須有 SCCP的支持 ， SCCP的地址是由 GT、 DPC、 SSN組成。46MAP支持的程序? 位置登記 /刪除? 切換? 復(fù)原? 操作維護(hù)? 補(bǔ)充業(yè)務(wù)? 短消息處理? 呼叫處理? IMEI的管理47位置登記 /刪除? VLR HLR PVLRSend AuthenSend Authen AckUpdatelocationCancellocationCancellocation AckInsert Insert AckUpdatelocation Ack48故障后復(fù)原程序 ——VLR 復(fù)原? VLR HLRProvide Roaming NumberProvide Roaming Number Ack.Send AuthenticationSend Authentication Ack.Restore Data49故障后復(fù)原程序 ——VLR 復(fù)原? Insert Sub. DataInsert Sub. Data AckRestore Data Ack.50故障后復(fù)原程序 ——HLR 復(fù)原? HLR VLR ResetUpdate LocationActive Trace ModeActive Trace Mode Ack.Insert Insert AckUpdate Location Ack51呼叫建立期間獲得路由數(shù)據(jù)? GMSC HLR VLRSend Routing InformationSRI Ack.Provide Roaming NumberPRN Ack.52移動(dòng)發(fā)起短消息業(yè)務(wù)傳送? MSC/VLR 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位置更新過(guò)程VLRHLRVLRBSS VMSCUmABnew oldLoc update cancellationId inquiringLocation Update 的起因：1） SIM卡第一次使用2）位置區(qū)發(fā)生變化3）周期位置更新4） IMSI attach/detachD DG55位置更新流程 (1)在同一 VLR/MSC中的位置更新MS VMSC VLRBSSLoc upd req Cmpl L3 Info Upd loc area Authenticate Authentication reqAuthentication resp Authenticate ackFwd new TMSI ackCipher mode cmdCiphering mode cmdUpd loc area ackCiphering mode p Cipher mode pLoc upd accTMSI reallocation cmpFwd new TMSISet ciphering modeUpdate location areaTarget location area IdServing cell IdLocation update typeIMSITMSIPrevious location area IdUpdate location area ACKUser errorProvider errorUser errorunknown subscriberunknown location