課件說明教案

移動通信 LTE/GSMCSFB技術(shù)研廣2013-03-fid 移動通信 內(nèi)CSFBCSFBfid 移動通信

FastReturnorFastRe-fid 移動通 CSFB性能比移動通信 內(nèi)CSFBEPC/LTE簡CSFBfid 移動通信 縮略CSFB：CircuitSwitchFall-BackforVoice,即:LTE語音業(yè)fid 移動通信 LTE+fid 移動通信 LTE系統(tǒng)節(jié)fid S1-E-Operator'sIP(e.g.IMS,PSSIP連fid

CSFB系統(tǒng)構(gòu)EPSarchitectureforCSfallbackoverAfid

fid

fid 移動通 PDNDataData

SRBSRBSRB

CCCH:RRCconnectionDCCH:L1/L2andmeasurementconfigurationPaggybackNAS

fid 移動通信 LTEUE移動性管理和主要狀態(tài)EMMAlways

RRC––––GPRSPDPcontextfid www：LTE–trackingTAI=PLMNid+GSM–LocationLAI=PLMNGPRS–RoutingRAI=PLMNfid 移動通信 UE2/3G2/3Gfid

LTE基本消息和信RRC-RadioResource系統(tǒng)消無線資源連接建立、釋無線層L1/L2的配無線測量管NAS–NonAccessStratum移動管理會話管理fid 移動通信 系統(tǒng)廣播消SIB1,小區(qū)識別信SIB2,本小區(qū)接入信SIB3,小區(qū)重選設(shè)SIB4,同頻4G鄰區(qū)信SIB5,異頻4G鄰區(qū)信SIB6,TDS鄰區(qū)信SIB7,GSM鄰區(qū)信。。

SIB1本小區(qū)頻點SIB3,小區(qū)識別信息LAC/CI,區(qū)選擇控制，接入信息fid 移動通信 GSMSIB1：本小區(qū)頻format_id=2format_id_2=1format_id_3=3 =621 7=42(02a)' )?15=33(0x21)?23=0(0x0)?31=0(0x0)?39=0(0x0)?47=0(0x0)?55=0(0x0)?63=0(0x0)?71=0(0x0)?79=0(0x0)?87=0(0x0)?95=0(0x0)?03=0(0x0) max_retrans=2tx_int=14cell_barr_access=0re=1ac=0padding_bits_L=0Bandspare_padding0=0fid 移動通信 GSMSIB3：LAC/ID,接入信chan_type=1l2_pseudo_len=18msg_type=27cell_ident_val=19617mcc_1=4mcc_2=6mcc_3=0mnc_3=15mnc_1=0mnc_2=0loc_area_code=22457mscr=1att=1bs_ag_blks_res=2ccch_conf=2cbq3=0bs_pa_mfrms=0t_3212_timeout=20pwrc=1dtx=1radio_link_timeout=7cell_reselect_hys=5acs=0neci=1rxlev_access_min=10max_retrans=2tx_int=12cell_barr_access=0re=1ac=0OptionalSelection

fid 移動通信 GSMSIB2Quater：3/4G鄰……SI2quater_INDEX=3SI2quater_COUNT=3……const_1=1const_1=1 =38000const_1=1 =38950const_0=0const_0=0const_0=0const_0=0_3g_csg_description_present=0padding_bits_L=0spare_padding0=

fid 移動通信 RRC：配置UE-eNB接入?yún)f(xié)fid

RRC建

SRBTM,SRconfig,SRB

e.g.NAS:AttachorMO

SRBRRCSecurityModeRRCSecurityModeCommand SRBfid

連接建立RespondtoaCSpageCSFBPSDLNetworkinitiatedNASUEinitiatedNASESR:CSFB

SRB2:DRB: fid 移動通信 RRC：承載控制信UE->eNB:RRCconnection由業(yè)務(wù)觸發(fā)，例如ESR或RRCconnection配置SRB1,MAC和物理RRCconnectionPiggybackNAS：Attach，MOCSFB配置SRB2和SRB2用來直傳NAS消息DL/ULInformationfid whr _fid wr

___ fid

NAS消移動性管IdentitySecurity移動連接管ServiceNAStransport會話管PDNEPSbearer

移動性管IdentitySecurityCallGMMGMMPS會話管PDPPDPcontextfid ES.rtcec Attach Attach Authentication Authentication Authentication Authentication Identity Identity Securitymode Securitymode

Trackingareaupdateaccept Trackingareaupdatecomplete Trackingareaupdatereject Trackingareaupdate Service Service Extendedservice Detach Detach CSservice Securitymodereject SecurityprotectedNAS DownlinkNAS UplinkNAS

EMMEMMGUTIreallocationGUTIreallocationfid (Spec ActivatededicatedEPSbearercontextaccept ActivatededicatedEPSbearercontextreject ActivatededicatedEPSbearercontextrequest ActivatedefaultEPSbearercontextaccept ActivatedefaultEPSbearercontextreject ActivatedefaultEPSbearercontextrequest ModifyEPSbearercontextaccept ModifyEPSbearercontextreject ModifyEPSbearercontextrequest Bearerresourceallocationreject Bearerresourceallocationrequest Bearerresourcemodificationreject Bearerresource ESM fid 移動通信 內(nèi)CSFBCSFB關(guān)鍵信令/CSFBfid 移動通信 CSFB信令流程-CSFB主叫流回歸fid 聯(lián)fid 移動通信 CSFB–CombinedMMEtofigureoutaVLRforCSservice,theMSC/VLRcreateSGinterfaceto1.1.Attach2.Step3tostep16oftheAttachprocedurespecifiedinTSDeriveVLRLocationUpdateCreateSGs6.6.Locationupdatein8.Step8.Step17tostep26oftheAttachprocedurespecifiedinTSfid Attach

Serving

PDN

4.IdentityIdentity

3.Identification5a.Authentication/5b.Identity6.CipheredOptions6.CipheredOptions

5b.MEIdentity7.DeleteSesion7.DeleteSession

7.PCEFInitiatedIP-CANSessionTerminationUpdateLocation9.CancelLocation

10.DeleteSession10.DeleteSession

PCEFInitiatedIP-CANSessionTerminationUpdateLocationCreateSessionCreateSessionPCEFInitiatedIP-CANCreateSessionInitialContextSetupRequest/AttachRRCConnectionRRCConnectionReconfigurationInitialContextSetupDirect

CreateSessionFirstDownlinkData(ifnot

FirstUplink

mPrivilege 23ModifyBearer移動通信 聯(lián)Attach voice__pref_for_EUTRAN=2(0x2)(CSVoicepreferred,IMSPSVoiceassecondary)UE_usage_setting=0(0x0)(Voicefid 移動通信 聯(lián) 被接Attachattach_result=2(0x2)(combEPS/IMSIqci=8(0x8)fid 移動通 CSFB–MOcallflow,connected

1a.NASExtendedService1a.NASExtendedService

equestwithCSFallback1c.S1-APUEContextModificationResponse3a. .3b,3cRRCconnection4S1-AP:S1UEContextReleaseMME4S1-AP:S1UEContextReleaseS1UEContextUEchangesRATthenLAUpdateorRAUpdateorLAUandRAU7a.Suspend(see23.060)9.CMService

9.A/Iu-csmessage(withCMService10a.Serviceis10c.CSis10c.CSMOUEaccess2G/3GforCS

Ifthefid 移動通

連接可以省 RRCreleasewith{{rrc-TransactionIdentifier{releaseCauseredirectedCarrierInfogeran{s s{}}}}}fid 移動通 R9RRCreleasewithSIvalueDL-DCCH-Message{messagec1:rrcConnectionRelease{{releaseCause{s s{}{{{{physCellId-{networkColourCodecarrierFreq-{systemInformation-{ }{physCellId-{

fid (idle)R8redirection+fid 移動通信 CSFB信令流程-CSFB被叫流TAU區(qū)更fid 移動通 CSFBMTcallflow-connected

1A.CSSERVICE

1A.PAGINGPagingrequestfromMSCvia

1A.SERVICE1A.SERVICE1b.NASExtendedService 1c.CSPaging2.OptionalMeasurement3a. 3b,3c.Signallingconnection4.S1-AP:3a. 3b,3c.Signallingconnection4.S1-AP:S1UECONTEXTRELEASERE

5.S1UECONTEXT6.UEchangesRATthen,LAUORRAUPDATEORLAUAND7a.Suspend(seeTS9.PagingUEaccess2G/3GforCS

7b.SuspendRequest/Update9a.EstablishCS9b.Signalling9b.SignallingConnection 9b.CONNECTION9c.LocationAreaUpdateorCombinedRA/LAfid

移動通信 FastReturn–RRchannelInformationType/RRProtocolProtocolMVSkipMVChannelMessageMessageMV1RRRRCauseMV1BAO6-GroupChannelGroupChannelO(note5-GroupCipherKeyGroupCipherKeyNumberC1GPRSGPRSResumptionO1BAListBAListO3-UTRANFreqUTRANFreqListO3-CellChannelCellChannelDescriptionOCellselectionindicatorreleaseofallTCHandCellselectionindicatorreleaseofallTCHandSDCCHO4-EnhancedDTMCSEnhancedDTMCSO1VGCSCipheringVGCSCipheringO3-GroupChannelDescriptionGroupChannelDescription2O(noteTalkerTalkerIdentityO3-TalkerPriorityTalkerPriority 才 3tVGCSAMRVGCSAMRO3移動通信 2012Dec1505:25:42.173[00]0x512FGSMRRSignalingMessage-Channel……cell_select_ind_incl=1(0x1)length_of_cell_selection_indicator=3const_011=3(0x3)struct3_count=1(0x1)const_1=1E-UTRAN=39250not_allowed_cells_present=0(0x0)target_pcid_present=0(0x0) fid 移動通信 CSFB–MTcallflow-idlefid A

Triggertostart

24.301,

TrackingAreaUpdateTrackingAreaUpdateSGSNContextSecuritySGSNContextAcknowledgeCreateSession

ifyBearer

14.UpdateLocation17.Cancel

FIniiatedIP-CANSessionModficationifyBearerCancelLocation18.IuRelease19.IuRelease

20.CancelLocationTrackingAreaUpdate

21.UpdateLocationTrackingAreaUpdateProcedureasinTS23.401,tepsto7fFigure5.4移動通信 Figure-1:HSSInitiatedSubscribedQoS1.1.InsertSubscriber1a.InsertSubscriberdata2b.ModifyBearer4.PCEFInitiatedIP-Sessionr8.Provision7.Update6.ProcedureasinTS23.401,steps3to10Figure-1orsteps3to8ofFigure5.4.3-5.Update3.Modify.2a.UECtxtPDNfid 移動通信 1.IP-CANSessionUpdateBearerUpdateBearerDownlinkNASDirectDirectUplinkNASUpdateBearern10.IP-CAN9.UpdateBearerPDNServingfid 移動通信 1.IP-CANUpdateBearerUpdateBearerBearerModifyRequest/SessionManagementRequestRRCConnectionRRCConnectionReconfigurationBearerModifyDirectSessionManagementUpdateBearer12.IP-CAN11.UpdateBearerPDNServingfid 移動通 (idle)MTR8redirection+fid 移動通信 fid 移動通信 R8

R8fid 移動通信 MO和MT的CSFB比UE發(fā)起ESRCSFBServiceRequest

CSUE響應(yīng)ESRCSFBfid 移動通信 同LA和跨LA的比同ServiceRequest或

跨UE在GSM發(fā)起CMServiceRequest或Pagingresponsefid 移動小區(qū)重選和快速重定向的比

通過RRChannelRelease直快速回到需要有能力識別適用fid 移動通信 連接態(tài)CSFB的特MT連接態(tài)時，用CSServiceNotification而不是PCCH:CSpaging。fid 移動通信 內(nèi)CSFBCSFBfid 移動通信

fid 移動通信 CSFB過程空口關(guān)鍵步被叫流程paging->ESR(CSFB為了承載NAS信令ESR（CSFBindication/CSterminating讀必要的系統(tǒng)消息（例如SIB2包括小區(qū)接入信息）并接入小CMServiceRequest/PagingResponse->NAS>Alerting->…->Disconnect->NASrelease->RRfid 移動通信 通話結(jié)束，回歸重選回LTE讀LTESIBTAU->TAU快速定向到fid 移動通信 L2LCSFB端到端流程分fid 移動通信 ExemplaryCSFBCallDeltaDeltainpagingdelayforMTRRCconnectionforsendingNASTuneawaytoGSMSIBAdditionalprocessthannormalGSMNoUEprocessingPCCH:pagingNoUEprocessingPCCH:pagingwithCSDoman TuneawaytoFIRSTSYSTEMINFORMATIONNASNASNASNASNASNASNASNASNASNASNASNASNASNASNAS 網(wǎng) 移動通信 CSMT起始點：NASCSServiceMTfid 移動通信 LTE回歸時LTE回歸時fid

重選回歸不可及時重選LTE回歸過程中電路域不可及過程mPrivilegeandConfntial才網(wǎng) 移動通信 重定向回歸不可及時重定向回歸不可及時聯(lián)合或聯(lián)合EPC或LAUfid 移動通信 內(nèi)CSFBCSFBCSFB性能優(yōu)fid 移動通信 網(wǎng)絡(luò)側(cè)性能優(yōu)化方MSCPTM-fid C

fid 信 No

MSC

LAC- fid GMSC對于失敗的尋呼從新發(fā)起HLR問時延很LocationCancelation，并使原MSC時延可接fid

SRI

Old

New SRI

PRNACK

LocationIAM Send(MTRFSupported,newMSC/VLRnumbersNonPre-

AuthenticationUpdateLocation(MTRFCancelLocation(MTRFSupportedAndAuthorized,NewMSC/VLRnumbers)CancelLocationAckOldMSCstopspagingtimerInsertSubscrberData(multiple)IfHLRauthorisesMTRFthenusenewMSC/VLRnumberstotriggersendingofPRNReqPRN(MTRFIndicator,OldMSCnumber)InsertSubscriberData(continued)UpdateLocationAfterUpdateLocationAckisreceived,thenewVLRreturnsMSRN’totheoldVLR.PRNACKIAM

Furtherproceduresrelatedtolocationupdate.E.g.ciphering,IMEIchecking,TMSINewVMSC/VLRdelayssetupuntillocationupdateprocedurefinishes.LocationUpdateAcceptTMSIReallocCmplt

Normal

SRI

LR

MS/LLR

MS/LLRMMUpdateLocation(MTRFCancelLocation(MTRFSupportedAndAuthorized,newMSC/VLRnumbers)CancelLo