GPRS上網(wǎng)流程概述課件

1、GPRSGPRS上網(wǎng)流程概述上網(wǎng)流程概述第一部分 PS域核心網(wǎng)架構(gòu)第二部分 GPRS上網(wǎng)原理概述第三部分 測試實(shí)例目錄2PS域核心網(wǎng)架構(gòu)無線側(cè)無線側(cè)23SCCPSCCPGrSGSNHLRTCAPMAPTCAPMAPSignallingBearerSignallingBearer控制面協(xié)議棧 UDP L2 L1 IP L2 L1 IP UDP Gn SGSN GTP-C GTP-C GGSN BSSGPRelayGMM/SMLLCRLCMACGSM RFGMM/SMLLCBSSGPL1bisUmGbMSBSSSGSNNetworkServiceRLCMACGSM RFL1bisNetworkSe

2、rvice RLC RRC L1 G MM / SM / SMS RRC MAC L1 RANAP L2 Relay L1 L2 SGSN RNS MS Iu-Ps Uu RLC SCCP Signalling Bearer MAC L1 Sig nalling Bearer RANAP SCCP G MM / SM / SMS 4用戶面協(xié)議棧 L1 RLC PDCP MAC E.g. , IP , PPP Application L1 RLC PDCP MAC L1 UDP/IP GTP - U L2 Relay L1 UDP/IP L2 GTP - U E .g. , IP , PPP 3

3、G - SGSN UTRAN MS Iu-PS Uu Gn Gi 3G - GGSN L1 UDP/IP GTP -U L2 L1 UDP/IP GTP - U L2 Relay 5手機(jī)如何上網(wǎng)？第一部分 PS域核心網(wǎng)架構(gòu)第二部分 GPRS上網(wǎng)原理概述第三部分 測試實(shí)例目錄7上網(wǎng)第一步：GPRS附著MM上下文存儲(chǔ)在存儲(chǔ)在MS和和SGSN中中, HLR中也有部分內(nèi)容中也有部分內(nèi)容包括用戶狀態(tài)、位置數(shù)據(jù)、終端能力等包括用戶狀態(tài)、位置數(shù)據(jù)、終端能力等是移動(dòng)性管理的基礎(chǔ)是移動(dòng)性管理的基礎(chǔ)一個(gè)用戶對應(yīng)一個(gè)一個(gè)用戶對應(yīng)一個(gè)MM上下文上下文一個(gè)一個(gè)MM上下文可對應(yīng)多個(gè)上下文可對應(yīng)多個(gè)PDP上下文上下文9以保

4、存在SGSN中的MM上下文為例，MS中保存的MM上下文略有不同。MM上下文內(nèi)容10A/Gb Mode MM StateIDLEGPRS AttachPDU TransmissionREADY Timer ExpiredOrForce to STANDBYREADYSTANDBYGPRS DETACHMS MM StatesSGSN MM StatesIDLEGPRS AttachPDU TransmissionREADYSTANDBY CancellocationOrImplicit DetachREADY Timer ExpiredOrForce to STANDBYOrAbnormal R

5、LC ConditionGPRS DETACHOrCancel locationIdle狀態(tài)：用戶未附著。MS 和SGSN無有效的位置信息和路由信息。此時(shí)無法PS尋呼到用戶。Standby狀態(tài)：用戶已附著。SGSN中對MS的位置信息精確到路由區(qū)。SGSN若有下行信令或數(shù)據(jù)，需要下發(fā)尋呼。Ready狀態(tài)：用戶已附著。 SGSN中對MS的位置信息精確到小區(qū)。SGSN向MS直接發(fā)送下行信令或數(shù)據(jù)，不需要尋呼。11Iu Mode MM StatePS AttachPS SignallingConnection ReleasePS SignallingConnection EstablishPS Det

6、achDetach,PS Attach Reject,RAU RejectSGSN MM StatesPMM-IDLESM-ACTIVE orINACTIVEPMM-CONNECTEDPMM-DETACHEDServing RNCrelocationPS AttachPS SignallingConnection ReleasePS SignallingConnection EstablishPS DetachDetach,PS Attach Reject,RAU RejectMS MM StatesPMM-IDLEPMM-CONNECTEDPMM-DETACHEDPMM-DETACHED狀態(tài)

7、：MS 和SGSN無有效的位置信息和路由信息。此時(shí)無法PS尋呼不到用戶。 SGSN的MM上下文中無有效的信息PMM-IDLE狀態(tài)：SGSN上MS的位置信息精確到路由區(qū)，若要下發(fā)數(shù)據(jù)或信息，需要先進(jìn)行尋呼。 SGSN與MS間不存在信令連接.PMM-CONNECTED狀態(tài)：SGSN上MS的位置信息精確到Serving RNC。 SGSN與MS存在信令連接.為什么在PS域定義多種業(yè)務(wù)狀態(tài)？連接建立連接釋放p CS域的業(yè)務(wù)特點(diǎn)：時(shí)間小時(shí)秒p PS域的業(yè)務(wù)特點(diǎn)：突發(fā)性MSNew SGSNAttach RequestAttach AcceptOld SGSNIdentification RequestId

8、entification ResponseIdentity ResponseIdentity RequestGGSNHLRAuthentication Delete PDP Context RequestDelete PDP Context ResponseUpdate GPRS LocationUpdate GPRS Location ACKCancel LocationInsert Subscriber DataCancel Location ACKInsert Subscriber Data ACKAttach CompleteGPRS附著流程Delete PDP Context Req

9、uestDelete PDP Context ResponseGPRS附著流程MSNew SGSNAttach RequestAttach AcceptHLRAuthentication Update GPRS LocationUpdate GPRS Location ACKInsert Subscriber DataInsert Subscriber Data ACKAttach Complete場景：用戶首次附著，使用IMSI發(fā)起附著。Attach TypeIMSIOld RAIGPRS CKSNMS network capabilityMS Radio Access capabiltyD

10、RX parameterRequested READY timerIMSISGSN addressSGSN numberGPRS enhancements support indicatorIMSIMSISDNODB Regional Subscription DataNAMGPRS Subscription DataSubscribed Charging CharacteristicsAccess Restriction DataAttach resultRAIForce to standbyPeriodic RA update timerRadio priority for SMSRadi

11、o priority for TOM8P-TMSI signatureAllocated P-TMSINegotiated READY timerCell NotificationGPRS附著流程MSNew SGSNAttach RequestAttach AcceptHLRAuthentication Attach Complete場景二：用戶在本SGSN上附著過，其SGSN上已經(jīng)建立的MM上下文還存在。Attach TypeP-TMSIP-TMSI signatureOld RAIGPRS CKSNMS network capabilityMS Radio Access capabilty

12、DRX parameterRequested READY timerGPRS附著流程MSNew SGSNAttach RequestAttach AcceptIdentity RequestIdentity ResponseGGSNHLRAuthentication Update GPRS LocationUpdate GPRS Location ACKInsert Subscriber DataInsert Subscriber Data ACKAttach Complete場景三：用戶在本SGSN上附著過，但SGSN上的MM上下文已不存在。Attach TypeP-TMSIP-TMSI s

13、ignatureOld RAIGPRS CKSNMS network capabilityMS Radio Access capabiltyDRX parameterRequested READY timerIdentity typeForce to standyMobile identityDelete PDP Context RequestGPRS附著流程MSNew SGSNAttach RequestAttach AcceptOld SGSNIdentification RequestIdentification ResponseIdentity RequestIdentity Resp

14、onseGGSNHLRAuthentication Delete PDP Context RequestDelete PDP Context ResponseUpdate GPRS LocationUpdate GPRS Location ACKCancel LocationInsert Subscriber DataDelete PDP Context ResponseCancel Location ACKInsert Subscriber Data ACKAttach Complete場景三：用戶在其他SGSN上附著過上網(wǎng)第二步： MS發(fā)起的PDP激活過程191919會(huì)話管理的核心PDP上

15、下文PDP：Packet Data Protocol 分組數(shù)據(jù)協(xié)議PDP上下文：一組與PDP相關(guān)的信息PDP上下文的定義21以保存在SGSNSGSN中的PDP上下文為例：PDP上下文的內(nèi)容22INACTIVEACTIVEDeactivate PDP ContextMM State change to IDLE(Gb mode) or PMM-DETACHED(Iu mode)Activate PDP ContextPDP上下文的狀態(tài)MSSGSNGGSNActivate PDP Context RequestDNSCreate PDP Context RequestStandard QueryS

16、tandard Query AckCreate PDP Context ResponseOCSCCR(I)CCA(I)RNCRAB Assignment ReqeuastRAB Assignment ResponseActivate PDP Context AcceptMS發(fā)起的PDP上下文激活流程MSSGSNGGSNActivate PDP Context RequestDNSCreate PDP Context RequestCreate PDP Context ResponseOCSBSCActivate PDP Context AcceptMS發(fā)起的PDP上下文激活（Gb模式）場景一：

17、MS從2G發(fā)起PDP激活GTP headerIMSIMSISDNEnd User AddressAccess Point NameNSAPISGSN Address for signalingSGSN Address for user trafficTEID Data ITEID Control PlaneCharging CharacteristicsQoS profileTFTRAT TypeUser Location InformationIMEI(SV）Negotiated LLC SAPINegotiated QoSRadio priorityPDP AddressProtocol

18、configuration optionsRequested NSAPIRequested LLC SAPIRequested QoSRequested PDP AddressAccess Point NameGTP headerCauseTEID Data ITEID Control PlaneCharging IDEnd User AddressGGSN Address for Control PlaneGGSN Address for user trafficMSSGSNGGSNActivate PDP Context RequestDNSCreate PDP Context Reque

19、stCreate PDP Context ResponseOCSRNCRAB Assignment ReqeuastRAB Assignment ResponseActivate PDP Context AcceptMS發(fā)起的PDP上下文激活（Iu模式）場景二：MS從3G發(fā)起PDP激活26PDP上下文其他場景27APN-Access Point NameAPN：GPRS網(wǎng)絡(luò)到其他計(jì)算機(jī)的網(wǎng)關(guān)名網(wǎng)絡(luò)標(biāo)示 運(yùn)營商標(biāo)示構(gòu)成： 示例： uninet. mnc001.mcc460. gprs3gnet /3gwap /uninet /uniwap用戶向網(wǎng)絡(luò)側(cè)提供APN用于SGSN選擇接入哪個(gè)GGSN用于

20、GGSN選擇接入哪個(gè)外部網(wǎng)絡(luò)28APN擴(kuò)展功能網(wǎng)絡(luò)標(biāo)示 運(yùn)營商標(biāo)示構(gòu)成： 示例： MSISDN: 8618601102531 uninet. 1860110. mnc001.mcc460. gprsAPN擴(kuò)展：network id.*.mnc.mcc.gprsSGSN可以對特定的用戶上報(bào)的APN進(jìn)行特定擴(kuò)展處理：第一部分 PS域核心網(wǎng)架構(gòu)第二部分 GPRS上網(wǎng)原理概述第三部分 測試實(shí)例目錄30Attach Request(使用IMSI)Attach TypeIMSIOld RAIGPRS CKSNMS network capabilityMS Radio Access capabiltyDRX

21、 parameterRequested READY timer31Update GPRS InformationIMSISGSN addressSGSN numberGPRS enhancements support indicator32Insert Subscriber DataIMSIMSISDNODB Regional Subscription DataNAMGPRS Subscription DataSubscribed Charging CharacteristicsAccess Restriction Data33Attach AcceptAttach resultRAIForc

22、e to standbyPeriodic RA update timerRadio priority for SMSRadio priority for TOM8P-TMSI signatureAllocated P-TMSINegotiated READY timerCell Notification34Attach Complete若SGSN為MS重分配了P-TMSI，則MS要向SGSN發(fā)送Attach Complete消息予以確認(rèn)35Requested NSAPIRequested LLC SAPIRequested QoSRequested PDP AddressAccess Point NameActive PDP Context Request36GTP headerIMSIMSISDNEnd User AddressAccess Point NameNSAPISGSN Address for