WCDMA无线接口4WCDMAPhysicalLayer.ppt

Part4 1of65 WCDMAAirInterfaceTrainingPart4WCDMAPhysicalLayer Part4 2of65 WCDMA ETSI ARIB 3GPP WCDMAOverview3GPPStandardsOrganization 3GPPDocumentStructureWCDMAFrequencyAllocationsWCDMAPerformanceOverviewPhysicalImplementationWCDMANetworkOverviewDownlinkImplementationUplinkImplementationPhysicalLayerProceduresSlot Frame andSuperframeSynchronizationRandomAccessProceduresPacketChannelAccessEstablishmentofaDedicatedChannelSoftHandoverHardHandover CompressedModeOperationTDDImplementation Part4 3of65 WCDMA ETSI ARIB 3GPP ThirdGenerationPartnershipProject 3GPP 3GPPProjectCoordinationGroup ETSI ARIB T1 TSG RAN WG1Layer1 WG2Layers2 3 WG3Iub Iur IuUTRAN O M WG4BSTestingProtocol TSG CN WG1MM CC SM WG2CAMEL MAP WG3Interworking TSG T WG1MSTesting WG2MSServices WG3USIM TSG SS WG1Services WG2Architecture WG3Security WG4Codec WG5Telecom Part4 4of65 WCDMA ETSI ARIB 3GPP Specificationsreferencedinthispresentation WCDMAUTRANNetwork3GPPTS25 401 v330 UTRANOverallDescription3GPPTS25 832 v300 ManifestationsofHandoverandSRNSRelocation3GPPTS26 071 v301 AMRSpeechCodec GeneralDescriptionWCDMARadioTransmissionandResourceManagement3GPPTS25 101 v331 UERadioTransmissionandReception FDD 3GPPTS25 104 v330 BSRadioTransmissionandReception FDD 3GPPTS25 103 v200 RFParametersinSupportofRadioResourceManagement3GPPTS25 133 v310 RequirementsforSupportofRadioResourceManagementWCDMAPhysicalLayerSpecifications FDDandTDD 3GPPTS25 201 v310 PhysicalLayerGeneralDescription3GPPTS25 301 v350 RadioInterfaceProtocolArchitecture3GPPTS25 302 v350 ServicesProvidedbythePhysicalLayerWCDMAFDD TDDModeStandards 3GPPTS25 211 v330 Physicalchannelsandmappingoftransportchannelsontophysicalchannels FDD 3GPPTS25 212 v330 Multiplexingandchannelcoding FDD 3GPPTS25 213 v330 Spreadingandmodulation FDD 3GPPTS25 214 v330 Physicallayerprocedures FDD 3GPPTS25 215 v330 Physicallayer Measurements FDD 3GPPTS25 221 v330 Physicalchannelsandmappingoftransportchannelsontophysicalchannels TDD 3GPPTS25 222 v331 Multiplexingandchannelcoding TDD 3GPPTS25 223 v330 Spreadingandmodulation TDD 3GPPTS25 224 v330 Physicallayerprocedures TDD 3GPPTS25 225 v330 Physicallayer Measurements TDD ThispresentationiscurrentasofTS 25V3 3 0 3GPPJune2000Release Part4 5of65 WCDMA ETSI ARIB 3GPP 3GPPWCDMAOverviewBothFDD 2x5MHz andTDD 1x5MHz modessupportedOperationspecifiedinbandsbetween1850and2170MHzBStimesynchronizationnotrequiredforFDDmodeGPSnotrequiredFastSynchronizationCodesallowasynchronousoperationandhandoverSynchronousoperationisallowed allowsfasteracquisition interferencereductionMulti CodeandVariableSpreadingFactormodessupportedNetworkinterfacecompatiblewithGSM MAP GPRS TobemadecompatiblewithANSI 41perOHGrequirementPhysicalParameters Chiprate 3 840McpsRFBandwidth 5MHzPhysicalLayerdataratesof15 30 60 120 240 480 960 and1920kb secPayloaddataratesof12 2 64 144 384 768 and2048kb secFramelength 10mSecFastPowerControl Bi directional 1500updates sec Part4 6of65 WCDMAFrequencyAllocations 2025 2110 IMT 2000 MSS MSS IMT 2000 MSS MSS 1885 1980 2010 2160 2170 2200 ITU WARC 95 2025 2110 IMT 2000 MSS IMT 2000 MSS 1900 1980 2010 2170 2200 DECT 1880 Europe 2025 2110 IMT 2000 MSS Terrestrial MSS 1918 1 1980 2010 2170 2200 PHS 1895 1885 Japan 2025 2110 MSS MSS 1900 1980 2010 2170 2200 FDDWLL 1880 CDMA 1865 1920 1945 1960 TDDWLL CDMA FDDWLL China 2025 2110 MSS 2185 2200 A 1850 1910 1930 1990 D B E F C A D B E F C MSS BroadcastAuxiliary Reserved 2150 USA 2025 2110 FDDUPLINK TDD FDDDOWNLINK 1920 1980 2010 2170 WCDMA EUROPE 1850 1910 FDDUPLINK 1930 1990 WCDMA USA FDDDOWNLINK TDD TDD 1900 3GPPTS25 201 5 2 25 102 5 2 2 Part4 7of65 MobileSwitchingCenter MSC BaseStationController BSC BaseTransceiverStation BTS TootherBTS s TootherBSC s TootherBTS s Um Um Um Abis Abis Abis A A E VLR HLR EIR GatewayMSC AC H F C B TootherMSC s E F C VLR B D G GPRSNetworkComponents D PacketControlUnit PCU ServingGPRSServiceNode SGSN GatewayGPRSServiceNode GGSN ExternalNetworksPSTNISDNInternet ExternalDataNetworkIP X 25 TootherBSC s A BaseStationSubsystem BSS GSM GPRSNetworkArchitecture Part4 8of65 WCDMA UMTSNetworkArchitecture Part4 9of65 UMTSandtheUTRAN GSM GPRSCoreNetwork CN Iu Iu RNS RNC RNS RNC NodeB NodeB NodeB NodeB Iur Iub Iub Iub Iub UserEquipment UE UTRAN UMTSTerrestrialRadioAccessNetwork PSTNISDNInternet Uu 3GPPTS25 401 6 0 MSC GPRSServiceNode Iu Iu Part4 10of65 UMTSandtheUTRAN UTRANDefinitionsRNS RadioNetworkSubsystem AfullorpartialnetworkofferingaccessbetweenUEandCoreNetworkContainsoneRNCRNC RadioNetworkController ElementoftheRNSthatcontrolsphysicalradioresourcesNodeBLogicalNodecontrollingtransmissionandreceptionfromoneormorecellsUuInterfaceInterfacebetweenUEandNodeBIuInterfaceInterfacebetweenCNandRNSIurInterfaceInterfacebetweenoneRNSandanotherRNSIubInterfaceInterfacebetweenRNCandNodeB 3GPPTS25 401 3 0 Part4 11of65 3GPPTS25 401 7 1 UMTSandtheUTRAN UTRANOperationalFunctions partial FunctionsrelatedtooverallsystemaccesscontrolAdmissionControl CongestionControlSysteminformationbroadcastingRadiochannelcipheringanddecipheringFunctionsrelatedtomobilityHandoverSRNSRelocationFunctionsrelatedtoradioresourcemanagementandcontrolInitial random accessdetectionandhandlingRadioresourceconfigurationandoperationcombining splittingcontrolRadiobearerconnectionset upandrelease RadioBearerControl AllocationanddeallocationofRadioBearersRadioprotocolsfunctionRFpowercontrolRadiochannelcodingRadiochanneldecoding Part4 12of65 UTRANModel UTRANOSIModel RadioResourceControl RRC MediumAccessControl MAC Transportchannels groupedbymethodoftransport Physicallayer Layer 3 Logicalchannels groupedbyinformationcontent UserData Controlandsignaling Layer 2 Layer 1 PhysicalchannelsPhysicalChannelsDistinguishedby RFFrequency ChannelizationCode SpreadingCode Modulation I Q Phase uplink Timeslot TDDmode AirInterface 3GPPTS25 201 4 0 DirectRRCcontrolofthephysicallayer Part4 13of65 PhysicalLayerRequirements ServicesprovidedbyPhysicalLayerDataandRFProcessingFunctionsFECencoding decodingoftransportchannelsErrordetectionontransportchannelsandindicationtohigherlayersRatematchingofcodedtransportchannelstophysicalchannelsPowerweightingandcombiningofphysicalchannelsClosed looppowercontrolModulation demodulationandspreading de spreadingofphysicalchannelsMultiplexing de multiplexingofcodedcompositetransportchannelsMappingoftransportchannelsonphysicalchannelsMacrodiversitydistribution combiningOperationalFunctionsCellsearchfunctionsSynchronization chip bit slot andframesynchronization SoftHandoversupportRadiocharacteristicsmeasurementsincludingFER SIR InterferencePower etc andindicationtohigherlayersUplinktimingadvance TDDmode 3GPPTS25 201 4 1 2 25 301 5 2 2 Part4 14of65 WCDMAPhysicalChannels BaseStation BS UserEquipment UE Part4 15of65 WCDMADownlinkPhysicalChannels CommonDownlinkPhysicalChannelsP CCPCHCommonControlPhysicalChannel Primary Broadcastscellsiteinformation BroadcastscellSFN TimingreferenceforallDLchannelsSCHSynchronizationChannel FastSynch codes1and2 time multiplexedwithP CCPCHS CCPCHCommonControlPhysicalChannel Secondary Transmitsidle modesignalingandcontrolinformationtoUE sP CIPCHCommonPilotChannelS CIPCHSecondaryCommonPilotChannel forsectoredcells PDSCHPhysicalDownlinkSharedChannel Transmitshigh speeddatatomultipleusersDedicatedDownlinkPhysicalChannelsDPDCHDedicatedDownlinkPhysicalDataChannelDPCCHDedicatedDownlinkPhysicalControlChannel Transmitsconnection modesignalingandcontroltoUE s 3GPPTS25 211 Part4 16of65 WCDMADownlinkPhysicalChannels DownlinkIndicationChannelsAICH AcquisitionIndicationChannel AcknowledgesthatBShasacquiredaUERandomAccessattempt EchoestheUE sRandomAccesssignature PICH PageIndicationChannel InformsaUEtomonitorthenextpagingframeAP AICH AccessPreambleIndicationChannelAcknowledgesthatBShasacquiredaUEPacketAccessattempt EchoestheUE sPacketAccesssignature CD CA ICHConfirmsthatthereisnoambiguitybetweenUEinaPacketAccessattempt EchoestheUE sPacketAccessCollisionDetectionsignature OptionallyprovidesavailablePacketchannelassignmentsCSICHBroadcastsstatusinformationregardingpacketchannelavailability 3GPPTS25 211 Part4 17of65 WCDMAUplinkPhysicalChannels UplinkPhysicalChannelsCommonUplinkPhysicalChannelsPRACHPhysicalRandomAccessChannel UsedbyUEtoinitiateaccesstoBSPCPCHPhysicalCommonPacketChannel UsedbyUEtosendconnectionlesspacketdataDedicatedUplinkPhysicalChannelsDPDCHDedicatedUplinkPhysicalDataChannelDPCCHDedicatedUplinkPhysicalControlChannel Transmitsconnection modesignalingandcontroltoBS 3GPPTS25 211 Part4 18of65 WCDMACodeTypes ChannelizationCodes OrthogonalCodes UsedtoorthogonallycodedifferentdatachannelsfromBS UEScramblingCodes SpreadSpectrumCodes BSScramblingCodes UsedbyUEtodistinguishthedesiredBSUEScramblingCodes UsedbyBStodistinguishthedesiredUESynchronizationCodesPrimarySync Code Fixed256 bitcodeHelpsUEidentifythepresenceofaWCDMABSHelpsUEachieveSlotSynchronizationSecondarySync Codes Groupof256 bitcodesHelpsUEachieveFrameSynchronizationPilotCodesAfull timecommonPilot CPICH providescoherentreferenceforUEreceiverPilotdatabitsareembeddedintoeachtimeslotoftheDedicatedDataChannelRandomAccessPreambleCodesPreambleSignatures UsedbyBStodistinguishbetweenUEmakingaccessattemptsPreambleScramblingCodes UsedtoidentifywhichBSisbeingaccessed Part4 19of65 WCDMADownlinkPhysicalLayer Part4 20of65 WCDMADownlink FDD Part4 21of65 DownlinkLogicalChannels CommonDownlinkLogicalChannelsBCCH BroadcastControlChannel BroadcastscellsiteandsystemidentificationtoallUEPCCH PagingControlChannel TransmitspaginginformationtoaUEwhentheUE slocationisunknownCCCH CommonControlChannel TransmitscontrolinformationtoaUEwhenthereisnoRRCConnectionSHCCH SharedChannelControlChannel Controlchannelassociatedwithsharedtrafficchannels TDDmodeonly CTCH CommonTrafficChannel TrafficchannelforsendingtraffictoagroupofUE s DedicatedDownlinkLogicalChannelsDCCH DedicatedControlChannel TransmitscontrolinformationtoaUEwhenthereisaRRCConnectionDTCH DedicatedTrafficChannel TrafficchanneldedicatedtooneUE 3GPPTS25 301 5 3 1 1 Part4 22of65 DownlinkTransportChannels CommonDownlinkTransportChannelsBCH BroadcastChannel ContinuoustransmissionofsystemandcellinformationPCH PagingChannel CarriescontrolinformationtoUEwhenlocationisunknownPendingactivityindicatedbythePICH pagingindicationchannel FACH ForwardAccessChannel Usedfortransmissionofidle modecontrolinformationtoaUENoclosed looppowercontrolDSCH DownlinkSharedChannel Carriesdedicatedcontroland ortrafficdata sharedbyseveralUE sDedicatedDownlinkTransportChannelsDCH DedicatedChannel CarriesdedicatedtrafficandcontroldatatooneUE 3GPPTS25 301 5 2 1 1 Part4 23of65 OVSFCodes DownlinkOVSFChannelizationCodes 1 1 1 11 1111 11 1 1 1 11 1 1 1 11 C1 0 C2 0 C2 1 C4 0 C4 1 C4 2 C4 3 Designation cch SF codenumber SF 1 SF 2 SF 4 3GPPTS25 201 4 3 Part4 24of65 CodeLayering WCDMACodeLayering 3GPPTS25 201 4 2 1 4 2 3 Part4 25of65 CommonPilotChannel DownlinkCPICH CommonPilotChannel PilotSymbolData 10symbolsperslot 1timeslot 2560Chips 10symbols 20bits 666 667uSec 3GPPTS25 211 5 3 3 Part4 26of65 SyncChannel PrimaryCommonControlChannel DownlinkSCH P CCPCH BroadcastData 18bits SSCi BCHSpreadingFactor 2561Slot 0 666mSec 18BCHdatabits slot 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1Frame 15slots 10mSec 2304Chips 256Chips SCH BCH 3GPPTS25 211 5 3 3 2 PSC Part4 27of65 SecondaryCommonControlChannel DownlinkS CCPCH SpreadingFactor 256to41Slot 0 666mSec 2560chips 20 2kdatabits k 0 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1Frame 15slots 10mSec 20to1256bits 0 2 or8bits 3GPPTS25 211 5 3 3 2 Data TFCIorDTX Pilot 0 8 or16bits Part4 28of65 PageIndicationChannel PagingIndicationChannel PICH SpreadwithSF 256ChannelizationcodeEachUElooksforaparticularPICHtimeslotApagingindicatorsetto 1 indicatesthattheUEshouldreadtheS CCPCHofthecorrespondingframe b1 b0 288bitsforpagingindication 12bits undefined Oneradioframe 10ms b287 b288 b299 3GPPTS25 211 5 3 3 9 Part4 29of65 DedicatedControl DataChannel DownlinkDPCCH DPDCHFrame Data2 TFCI Data1 TPC 1Slot 0 666mSec 2560chips 10 x2 kbits k 0 7 SF 512 2k 512 256 128 64 32 16 8 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1Frame 15slots 10mSec DPDCH Pilot DPDCH DPCCH DPCCH TheDPDCHcarriesusertraffic layer2overheadbits andlayer3signalingdata TheDPCCHcarrieslayer1controlbits Pilot TPC andTFCIDownlinkClosed LoopPowerControlstepsof1dB 0 5dB 3GPPTS25 211 5 3 2 Part4 30of65 DownlinkDataRates VariableDataRatesontheDownlink Examples CodedData1 920Mb sec 19 200bitsper10mSecframe S PConverter ChannelCoding OVSFcodesat3 84Mcps 960kb sec Part4 31of65 DownlinkDPDCH DPCCHSlotFormats 3GPPTS25 211 5 3 2 Notes 1 Zero TFCIslotformatsareusedwhenthereisonlyonedataserviceontheDCH 2 SlotformatsAandBareusedduringcompressedmodeoperation Part4 32of65 Time EmbeddedPilotSymbols DL Time multiplexedwithDPDCHUL TransmittedonQ channelalongwithTPC TFCI FBIbits PilotBitPatterns DownlinkDPDCH DataChannel 3GPPTS25 211 5 3 2 Note ShadedportionsaretheFrameSynchronizationWords FSW Part4 33of65 TransmitPowerControl TPC Bits TPCBits2 4 or8bitsperslotdependingonslotformat 3GPPTS25 211 Table13 Part4 34of65 TFCIBits TFCI TransportFormatCombinationIndicator UsedwhenmultipleservicesaremultiplexedontooneDPDCH DataChannel1 DataChannel2 DataChannelN ChannelCoding ChannelCoding ChannelCoding CodedCompositeTransportChannel CCTrCH TFI1 TFI2 TFIN TFCIWord32bits TFI TransportFormatIndicatorTFCI TransportFormatCombinationIndicator ChannelCoding 10bits Part4 35of65 DownlinkDataCoding Multiplexing Conv CodingR 1 3 304 304 2344 688 688 1344 420 RadioframeFN 4N 1 RadioframeFN 4N 2 RadioframeFN 4N 3 RadioframeFN 4N Trafficdata 122x2 AddCRCbits AddTailbits 2ndinterleaving 420 420 420 176 276 376 476 804 260 244 Tail8 CRC16 360 112 Tail8 96 96 CRC16 Ratematching 1stinterleaving AddCRCbits Layer3Controldata AddTailbits Conv CodingR 1 3 2344 1344 RadioFrameSegmentation slotsegmentation 30kspsDPCH Ratematching 1stinterleaving 244 Traffic 12 2kbps L3Data 2 4kbps 3GPPTS25 101App A 3 MUX Pilot TPC TFCI 600bits 300symbols 600bits 300symbols 600bits 300symbols 600bits 300symbols Datafromsecond244 bitpacket Part4 36of65 DownlinkDataCoding Multiplexing TurboCodingR 1 3 280 280 29050 18100 18100 19050 9120 RadioframeFN 4N 1 RadioframeFN 4N 2 RadioframeFN 4N 3 RadioframeFN 4N Trafficdata 3840 x2 2ndinterleaving 9120 9120 9120 170 270 370 470 11568 7712 3840 Terminationbits CRC16 360 112 Tail8 96 96 CRC16 Ratematching 1stinterleaving Layer3Controldata Conv CodingR 1 3 29050 19050 RadioFrameSegmentation slotsegmentation 480kspsDPCH Ratematching 1stinterleaving 3840 Traffic 384kbps L3Data 2 4kbps 3GPPTS25 101App A 3 MUX Pilot TPC TFCI 9600bits 4800symb 9600bits 4800symb 9600bits 4800symb 9600bits 4800symb 3840 CRC16 3840 Concatenate Concatenate AddCRCbits AddCRCbits 12 11568 12 Datafromsecond3840 bitpacket Part4 37of65 Multi CodeTransmission DownlinkDPCCH DPDCHFrame 1Slot 0 666mSec 2560chips 10 x2 kbits k 0 7 3GPPTS25 211 5 3 2 PrimaryDPCCH DPDCH Part4 38of65 DownlinkSharedChannel DownlinkPDSCHFrame Data 30kbpsto1920kbps 1Slot 0 666mSec 2560chips 20 x2 kbits k 0 6 SF 256 128 64 32 16 8 or4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1Frame 15slots 10mSec Notes ThePDSCHhasnoembeddedPilot TFCI orTPC Therefore itmustalwaysbeassociatedwithanactiveDPCCH TheassociatedDPCCHprovidesthenecessaryPilot TFCI andTPCbitsforthePDSCH ThePDSCHcanchangeitsspreadingratioeveryframe asindicatedbytheTFCIontheDPCCHAnyorthogonalcodeunderthe PDSCHRootChannelizationCode maybeutilizedMultiplePDSCH smaybeassignedtooneUE 3GPPTS25 211 5 3 3 5 Part4 39of65 CRCAlgorithms CRCAlgorithms0 8 12 16 or24paritybits determinedbyupperlayers g CRC24 D24 D23 D6 D5 D 1g CRC16 D16 D12 D5 1g CRC12 D12 D11 D3 D2 D 1g CRC8 D8 D7 D4 D3 D 1 3GPPTS25 212 4 2 1 1 Part4 40of65 FECCodingRules FECCoding 3GPPTS25 212 4 2 3 Part4 41of65 WCDMAConvolutionalCodeGenerators 3GPPTS25 212 4 2 3 1 D D D D D D D D DataIn 2 1MUX DataOut D D D D D D D D DataIn 3 1MUX DataOut Rate1 2 k 9coder G0 5618 G1 7538 Rate1 3 k 9coder G0 5578 G1 6638 G2 7118 Part4 42of65 WCDMATurboCodeGenerator DataInRate X MUX DataOut3xinputbits 12Terminationbits Xk Xk Zk TurboInterleaver X k Z k Atendofdatablock bothswitchesgo down toprovide12 bitTrellisTermination xK 1 zK 1 xK 2 zK 2 xK 3 zK 3 x K 1 z K 1 x K 2 z K 2 x K 3 z K 3 3GPPTS25 212 4 2 3 2 D D D D D D Part4 43of65 Interleaving Interleaving1st StageInterleaverPerformedpriortoservicemultiplexingInterleavingdepthof1 2 4 or8columns2nd StageInterleaverPerformedafterservicemultiplexingInterleavingdepthof30columns 3GPPTS25 212 4 2 5 4 2 11 Part4 44of65 Interleaving Interleaving K blockscontaining RxC bitseach 0 1 2 3 RC 1 0C R 1 C 1C 1 R 1 C 1 mC m R 1 C m C 12C 1 RC 1 0C R 1 C mC m R 1 C m 1C 1 R 1 C 1 C 12C 1 RC 1 C0 Cm C1 CF 1 BeforeInterleaving WriteDataintoMatrixRow wise AfterInterleaving 0 C R 1 C m C m R 1 C m 1 C 1 R 1 C 1 C 1 2C 1 RC 1 ReadDatafromMatrixColumn wise C0 C1 Cm CC 1 3GPPTS25 212 4 2 5 4 2 11 Part4 45of65 Interleaving InterleaverColumnsPermutations 1stand2ndInterleavers Part4 46of65 RateMatching RateMatchingWhencodeddataratesofservicesareincompatible RateMatching isusedtoequalizethedatarates RateMatchingmaybeperformedby PaddingwithextrabitsPuncturingofbitsusingapseudo randomalgorithmForcompleteratematchingrules see3GPPTS25 212 4 2 7 3GPPTS25 212 4 2 7 Part4 47of65 DownlinkOrthogonalCodeAllocations EachdatastreamisassignedauniqueChannelizationCode Uservoice datachannels Layer3 ControlChanneldataPrimaryCPICH CommonPilot usesChannelizationCodeC256 0 Onepercell PhasereferenceforSCH PrimaryCCPCH AICH PICH ScrambledusingthePrimaryScramblingCodeSecondaryCPICHusesanyChannelizationcodeofSF 256 Zero one orseveralpercell ScrambledusingthePrimaryorSecondaryScramblingCodeP CCPCH BroadcastChannel alwaysusesCodeC256 1S CCPCHChannelizationCodeisbroadcastovertheP CCPCHTrafficChannelCodesaretransmittedovertheS CCPCH Part4 48of65 ComplexPNSpreading ComplexPNSpreading Downlink I Q SC Q SC I FIRFilter FIRFilter cos 2 fRFt sin 2 fRFt SC I RFOutput Is Qs 3GPPTS25 212 5 Part4 49of65 ComplexPNSpreading ComplexPNSpreading Downlink Thewayitlooksinthespec p t p t RFOut Cos wt Sin wt ScramblingCode Cscram SCI jSCQ j Real Imag I jQ I Q Sameresultasinthepreviousslide 3GPPTS25 212