WCDMA基本信令流程(RAN)

WCDMA基本信令流程前言正确、完整的信令交互是进行正确的语音通信或数据通信的基础。当系统出现问题时，可以通过信令流程的分析，找到问题的根源，为正确、迅速解决问题提供了保证。课程内容Training.huawei.com第一章UTRAN网络结构和协议栈第二章基本概念第三章信道映射第四章信令流程UTRAN的网络结构RNSRNCRNSRNCCoreNetworkNodeBNodeBNodeBNodeBIuIuIurIubIubIubIubRNC无线网络控制面处理协议NodeBRNCCNUERNCRANAPNBAPRNSAPRRCNBAP:NodeBApplicationPartRANAP:RadioAccessNetworkAppicationPartRNSAP:RadioNetworkSubsystemApplicationPartRRC:RadioResourceControlUU协议结构L3controlcontrolcontrolcontrolLogicalChannelsTransportChannelsC-planesignallingU-planeinformationPHYL2/MACL1RLCDCNtGCL2/RLCMACRLCRLCRLCRLCRLCRLCRLCDuplicationavoidanceUuSboundaryBMCL2/BMCcontrolPDCPPDCPL2/PDCPDCNtGCRadioBearersRRCIu-CS域协议结构Q.2150.1Q.2630.1RANAPIuUPProtocolLayerTransportNetworkLayerPhysicalLayerTransportUserNetworkPlaneControlPlaneUserPlaneTransportUserNetworkPlaneTransportNetworkControlPlaneRadioNetworkLayerATMSSCOPAAL5SSCOPSSCF-NNIAAL2AAL5MTP3bMTP3bSCCPSSCF-NNIIu-PS域协议结构SSCF-NNISSCOPAAL5IPSCTPSCCPSSCF-NNIMTP3-BM3UARANAPIuUPProtocolLayerTransportNetworkLayerPhysicalLayerTransportUserNetworkPlaneControlPlaneUserPlaneTransportUserNetworkPlaneTransportNetworkControlPlaneRadioNetworkLayerATMAAL5IPUDPGTP-UPhysicalLayerATMIub接口协议结构NodeBApplicationPart(NBAP)AALType2ALCAPTransportLayerPhysicalLayerRadioNetworkLayerRadioNetworkControlPlaneTransportNetworkControlPlaneDCHFPRACHFPATMDSCHFPAALType5UserPlaneSSCF-UNISSCOPAALType5SSCF-UNISSCOPQ.2630.1Q.2150.2FACHFPPCHFPUSCHFPCPCHFPIur接口协议结构SSCF-NNISSCOPMTP3-BAAL5IPSCTPSCCPAAL5SSCF-NNISTC(Q.2150.1)RNSAPIurDataStream(s)TransportNetworkLayerPhysicalLayerTransportUserNetworkPlaneControlPlaneUserPlaneTransportUserNetworkPlaneTransportNetworkControlPlaneRadioNetworkLayerATMALCAP(Q.2630.1)AAL2SSCF-NNISSCOPMTP3-BIPSCTPSSCF-NNIM3UAM3UA课程内容Training.huawei.com第一章UTRAN网络结构和协议栈第二章基本概念第三章信道映射第四章信令流程基本概念1、ServingRNC、DriftRNC和ControllingRNC2、SourceRNC和TargetRNC3、CELL、URA、LAIUC-Id=RNC-Id+C-Id基本概念(续1)EstablishRRCConnectionReleaseRRCConnectionUTRARRCConnectedModeUTRA:Inter-RATHandoverGSM:HandoverEstablishRRCConnectionReleaseRRCConnectionURA_PCHCELL_PCHGSMConnectedModeEstablishRRConnectionReleaseRRConnectionIdleModeCampingonaUTRANcell1CampingonaGSM/GPRScell1GPRSPacketIdleMode1GPRSPacketTransferModeInitiationoftemporaryblockflowReleaseoftemporaryblockflowCellreselectionCELL_DCHoutofserviceinserviceCELL_FACHoutofserviceinserviceoutofserviceinservice基本概念(续2)4、软切换、硬切换、迁移和前向切换5、NCP和CCPNCP(NodeBControlPort)：每个NodeB一个。用于传输公共过程的信令CCP(CommunicationControlPort)：每个NodeB可以有多个CCP6、U-RNTI、S-RNTI、C-RNTI和D-RNTIU-RNTI=S-RNTI+SRNCidentityD-RNTI不用于Uu接口基本概念(续3)AS_Th–AS_Th_HystAs_Rep_HystAs_Th+As_Th_HystCell1ConnectedEvent1DAddCell2Event1DReplaceCell1withCell3Event1FRemoveCell3CPICH1CPICH2CPICH3TimeMeasurementQuantityTTT基本概念(续4)7、RL、RLSRL：AradiolinkisalogicalassociationbetweenasingleUserEquipmentandasingleUTRANaccesspoint.Itsphysicalrealizationcomprisesoneormoreradiobearertransmissions.RLS:AsetofoneormoreRadioLinksthathasacommongenerationofTransmitPowerControl(TPC)commandsintheDL.基本概念(续5)8、RAB、RABsub-flows和RBRAB:Theservicethattheaccessstratumprovidestothenon-accessstratumfortransferofuserdatabetweenUserEquipmentandCN.RABsub-flows:ARadioAccessBearercanberealisedbyUTRANthroughseveralsub-flows.Thesesub-flowscorrespondtotheNASservicedatastreamsthathaveQoScharacteristicsthatdifferinapredefinedmannerwithinaRABe.g.differentreliabilityclasses.RB:Theserviceprovidedbythelayer2fortransferofuserdatabetweenUserEquipmentandServingRNC.基本概念(续6)RABsub-flows的特性：a.一个RAB的子流在RAB建立和释放时分别被建立和释放b.一个RAB的子流在RAB-SAP一起submittedanddeliveredc.一个RAB的子流在IU接口上共用一个传输承载d.一个RAB的子流在IU接口上进行预配置、其组织受NAS的影响RABsub-FlowCombination(RFC)：能够同时提交给IuUP传输的有效的RAB子流可变属性的组合（如SDU大小），由CN给出、SRNC不能修改RFCI：RABsub-FlowCombinationIndicator基本概念(续7)9、TF、TFS、TFC、TFCS、TFI、TFCI和CTFC(25.302)TF(TransportFormat):ThisisdefinedasaformatofferedbyL1toMAC(andviceversa)forthedeliveryofaTransportBlockSetduringaTransmissionTimeIntervalonaTransportChannel.动态部分:–传输块的大小;–传输块的集的大小–TTI(仅用于TDD的可选部分);基本概念(续8)半静态部分:–TTI(mandatoryforFDD,optionalforthedynamicpartofTDDNRTbearers);–错误保护计划–纠错方式,如Turbo码、卷积码、或不编码(nochannelcoding):–编码速率–静态速率匹配参数–打孔限制–CRC大小基本概念(续9)TFS(TransportFormatSet):一个传输信道的所有格式的集合TFC(TransportFormatCombination):物理层可以复用一个或几各传输信道，每个传输信道都有一个可用的传输格式列表，现有的传输格式的组合，这些传输格式可用被复用到一个CCTrCH上。TFCS(TransportFormatCombinationSet):一个CCTrCH上的传输格式组合的集合TFI(TransportFormatIndicator):标号,对于用TrCH的集合中特定的TFTFCI(TransportFormatCombinationIndicator):指示当前使用的TFCCTFC(CalculatedTransportFormatCombination):参考25.331-10.14描述基本概念(续10)10、RFN、SFN、CFNRFN:RNCFrameNumbercounter.ThisistheRNCnodecommonframenumbercounter.RFNisoptionallyfrequency-lockedtoaNetworksyncreference.Range:0to4095frames.SFN:CellSystemFrameNumbercounter.SFNissentonBCH.SFNisusedforpaginggroupsandsysteminformationschedulingetc.InFDDSFN=BFNadjustedwithT_cell.Range:0to4095frames.基本概念(续11)CFN:ConnectionFrameNumber(counter).CFNistheframecounterusedfortheL2/transportchannelsynchronisationbetweenUEandUTRAN.ACFNvalueisassociatedtoeachTBSanditispassedtogetherwithitthroughtheMAC-L1SAP.CFNprovidesacommonfram