GSM协议栈原理.ppt

GSM GPRSProtocolStackArchitecture VitoTai Outline GSM GPRSProtocolStackArchitectureIntroducethearchitectureandallmodulesofProtocolstackCommonProceduresIncludesgeneralprocedures likeLU MOcall GPRSATTACH andetc forillustrationofthefunctionalityandinteractionofmodulesofProtocolstack Outline GSM GPRSProtocolStackArchitectureIntroductionL4NASASDataSIMCommonProcedures Introduction Taskv s Module OneModuleimplementsonelayerorgroupsoffunctionalities TaskistheunitofOSschedulingThecommunicationbetweenModulesisbyPrimitives Messages Moreoverheadininter taskcommunicationPutmodulesintoonetaskSharecommonmemoryLousycommunicationsSharethesamepriorityOtherconsiderationGeneralpriorityarrangement lowerlayerhigherpriority Introduction Taskmain while 1 receive msg ext q task ext qid while 1 receive msg ext q task ext qid Multi module Single module SAPheaders definemessageids Driverinterface ASNfileofCC HeaderfileofCC SourcefileofCC Mcd parserGeneratedheaderfile Headersofcommonlocalstructure Headersofstructuresforprimitives Headersofcommonusedenums ASNsofcommonusedandSSACTFiles Introduction DirectoryStructure Layer4 TheinterfacebetweenPSandMMI AT L4 L4C 1 9 L4CLayer4controllerCo ordinateallL4modulestoperformtherequestsfromATorMMIInterfacesThereareinterfacesbetweenallmodulesinL4PPP L4C SAP PPPL4C ABM SAP ABMSourcemcu ps l4 l4c L4 L4A ATCI 2 9 L4ALayer4adaptationTranslatefunctioncallstoprimitivesbetweenMMIandL4C CodegeneratedbytoolbaseonanExcelfileSourcemcu ps l4 l4aATCISub moduleofL4CATcommandInterpreterSourcemcu ps l4 l4c L4 RAC 3 9 RegistrationAccessControlGSM GPRSregistrationmanagementPLMNList SelectionCellpowerlevelreportInterfaceL4C RAC SAP L4CGMMREG SAP MMMMIAS SAP RMPCSourcemcu ps l4 rac L4 TCM 4 9 TerminalContextManagementHandlePDPcontextprofilesQoS PDPaddress PDPtypes RequesttoactivatePDPcontextsRelayofDatatransferInterfacesTCM L4C SAP L4CSMREG SAP SMSNDCP REG SAP SNDCPTCM PPP SAP PPPTCM TCPIP SAP TCPIPSourcemcu ps l4 tcm L4 SMSAL 5 9 SMSApplicationLayerMessageboxofME SIMTransmittingandreceivingSMSCellBroadcastmanagementInterfacesSMSAL L4C SAP L4CSMSAL SOC SAP SOCMNSMS SAP SMSSMSAL AS SAP RMPCSourcemcu ps l4 smsal L4 TCM SMSALinWAP GPRS 6 9 TCMwillrelayIPpacketstoSNDCP andviceversa SMSALforwardsPUSHmessagetoSocket L4 CSM 7 9 CallServiceManagementBearerCapabilityHandlingCODECattachmentmanagementCSD Faxactivation deactivationCallinformationmaintainingCallrelatedSShandlingInterfacesCSM L4C SAP L4CMNCC SAP CCCSM TDT SAP TDTofDataCSM L2R SAP L2RofDataMNSS SAP CISSSourcemcu ps l4 csm L4 SMU 8 9 SecurityManagementUnitSecurityCheckingPhonelockCHV1 CHV2Personalization ETSI02 22 AutolockInterfacesSMU L4C SAP L4CPS SIM SAP SIMSourcemcu ps l4 smu L4 PHB UEM 9 9 PhonebookIdentifyEmergencycallPhonebookmanagementUserEquipmentManagementPeripheralmanagement NAS NonAccessStratum NAS CISS 1 12 CallIndependentSupplementalService3GPP ETSIspecifications 22 081 22 088 22 091 22 091 22 093 22 072SAPsMM SS SAP MMMNSS SAP CSMofL4Sourcemcu ps cc ss ss NAS CC 2 12 CallControl3GPP ETSIspecifications24 008 Clause5 SAPsMM CC SAP MMMNCC SAP CSMofL4Sourcemcu ps cc ss cc NAS SMS 3 12 ShortMessageService3GPP ETSIspecification 23 040SAPsMM SMS SAP MMMNSMS SAP SMSALofL4LLC SMS SAP LLC GPRS only Sourcemcu ps sms NAS MM GMM 4 12 MobilityManagement3GPP ETSIspecification24 008 Clause4 SAPsMM CC SAP CCMM SS SAP CISSMM SMS SAP SMSGMMREG SAP RACofL4MM AS SAP RRGMM SM SAP SMLLC GMM SAP LLC NAS MM GMM 5 12 Sourcemcu ps mm cmm CSdomainmcu ps mm pmm PSdomainmcu ps mm common commonSingletask singleModule TwoFSMs NAS SM 6 12 SessionManagement3GPP ETSIspecification 24 008 Clause6 SAPsGMM SM SAP MMSMREG SAP TCMofL4SM DATA PLANE SAP SNDCPSourcemcu ps sm NAS SNDCP 7 12 SubNetworkDependencyConvergenceProtocol3GPP ETSIspecification04 65RFC1144 forTCP IPheadercompression SAPsSM DATA PLANE SAP SMSM REG SAP TCMLLC SNDCP SAP LLCSourcemcu ps sndcp NAS LLC 8 12 LogicalLinkControl3GPP ETSIspecification04 64SAPsLLC GMM SAP GMMLLC SNDCP SAP SNDCPLLC SMS SAP SMSLLC RLC SAP RLCSourcemcu ps llc NAS PPP 9 12 PointtoPointProtocolRFCspecification1661 1662 1332 1877 1334 1994TwoRoles Server inGPRSdial up Client inWAPoverCSDSAPs forGPRSdialup PPP L4C SAP L4CofL4PPP TCM SAP TCMofL4UartdriverinterfaceSourcemcu ps ppp NAS PPPinGPRSdial up 10 12 ReferencemodelinETSI07 60 NAS PPPinWAP CSD 11 12 SAPsPPP TCPIP SAP TCPIPPPP TDT SAP TDTL2R PPP SAP L2R NAS PPPofTworoles 12 12 Whynottwotasks Savestack Taskcontrolblock etc PriorityofPPPTaskPPPisinlowerlayerthanWAPandTCP IPinWAP CSD WAPisthesamepositionasMMIInGPRSDial upPPPhasnothingtodowithMMI butbustyGPRSdatamayaffectMMIifPPPhashigherprioritythanMMISolution makePPPlowerpriority andriseitwhenneeded Isitpossiblethattwomodesofitareactiveatthesametime Yes DataTask Data RLP 1 3 RadioLinkProtocol3GPP ETSIspecification24 022SAPsL2R RLP SAP L2RRLP RA SAP L1 callback Sourcemcu ps data rlp Data L2R 2 3 Layer2Relay3GPP ETSIspecification27 001 27 002SAPsCSM L2R SAP CSMofL4L2R RLP SAP L2RPPP L2R SAP PPPUARTdriverSourcemcu ps data l2r Data TDT 3 3 TransparentDataTransfer3GPP ETSIspecification27 001 27 002SAPsCSM TDT SAP CSMofL4PPP TDT SAP PPPLayer1Sourcemcu ps data tdt SIM SIMmanagerSIMApplicationToolkit3GPP ETSISpecifications11 11 11 14SAPsSIM PS SAP toallmodulesFunctioninterfacewithSIMdriverSourcemcu ps sim AS RR AccessStratum RR RadioResourceMostmodulesareinRRtask3GPP ETSISpecifications03 22 04 18 04 60 05 02 05 08 RR RRM 1 10 RadioResourceManagementInitPoweronPLMNSelectionCellselectionManualPLMNSelectionHomePLMNSearchRecoverytonormalserviceSAPsRRM RMPC SAP RMPCMM AS SAP MMSourcemcu ps rr rrm RR RMPC 2 10 RadioResourceManagementonCCCHorPCCCHDecisionrule SI13willindicateifPchannelissupportedinthecellIdleModeMonitor packet systeminformationonBCCHorPBCCHPerformcellreselectionPerform packet channelaccessonCCCHorPCCCHResponseto packet pagingmessagesonCCCHorPCCCH RR RMPC 3 10 DedicatedmodeMeasurementsonSDCCH TCHMonitoringneighboringcellsMonitorSystemInformationonSACCHPerformcellreselection NWinitiated DedicatedmodeproceduresSAPsMMI AS SAP MMISMSAL AS SAP SMSALMM AS SAP MMRRM RMPC SAP RRMRMC LAPDM SAP RMC RR RMPC 4 10 RLC RMPC SAP RLCMAC RMPC SAP MACRMPC MPAL SAP MPALSourcemcu ps rr rmpmcu ps rr rmcmcu ps rr src RR LAPDm 5 10 Layer2ProvideSAPI0 SAPI3connectionsTransferlayer3messageSequencecontrolSegmentationandre assemblyofframesSAPsRMC LAPDM SAP RMCLAPDM MPAL SAP MPALSourcemcu ps rr lapdm MobilePhysicalAbstractionLayerAdaptationtoL1SAPsRRM MPAL SAP RRMRMPC MPAL SAP RMPCMAC MPAL SAP MACSourcemcu ps rr mpal RR MPAL 6 10 RR RLC 7 10 RadioLinkControlRequestTBFestablishmentorreleaseSegmentationofLLCPDUsAcknowledged UnacknowledgeddatatransferSAPsLLC RLC SAP LLCRLC REASM SAP REASMRLC MAC SAP MACRLC RMPC SAP RMPCSourcemcu ps rr rlc ReassembleToputnonrealtimeconstrainttaskintoanotherTaskRe assembleDownlinkRLC MACblocksSAPsLLC RLC SAP LLCRLC REASM SAP REASMSourcemcu ps rr rlc Reasm 8 10 RR MAC 9 10 MediumAccessControlHandlingTBFestablishmentandreleaseTransferorreceiveRLCdatablocksHandlingcontrolmessagesreceivedonPACCHPacketResourceRequest PacketPDCHreleaseandetc ForwardPMOorPCCOtoRMPCHandlingPSImessagesreceivedonPACCHSendingPacketMeasurementReportonPACCH SAPsRLC MAC SAP RLCMAC RMPC SAP RMPCMAC MPAL SAP MPALSourcemcu ps rr mac RR MAC 10 10 Outline GSM GPRSProtocolStackArchitectureCommonProceduresPowerOnLocationUpdateMOcallGPRSAttachPDPcontextActivationTBFOperation PowerOnProcedure ConditionPoweronbylongpressPowerkeyAlltasksarecreatedandinitializedwhenthetargetispowered butonlyif long presswasdetected poweronprocedurewillbeginPlayersSIM L4NVRAM MM RR PowerOn 1 ReadallnecessaryEFs PowerOn 2 ReadNVRAMviaL4C IfNotFlightMode PowerOn 3 ReadIMEI MSCAP etc ReadfromNVRAM SearchAnyCell PowerOn 4 ReadallsecurityrecordfromNVRAM CheckPhoneLock StartSIMDriver PowerOn 5 InputPIN PersonalizationLockHandling PowerOn 6 InitializeSMSServiceParameter ReadLDN PowerOn 7 ReadallEFsforMM RR SearchNormalService PowerOn 8 ReadSMS LocationUpdate ConditionAsuitablecellwasfoundwhenpoweronPLMNselectionPlayersMM RRL4C RAC LocationUpdate 1 LocationUpda