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1、3GPPLTEPrinciplesAgenda1.LTEMarket2.3GPPLTE-EvolvedUTRA2.1RadioInterfaceConcepts2.2LTERadioFrameandSubframeStructure2.3LTEChannels2.4LTEProcedures3.TD-LTE&FDDLTEComparisonTD-LTEMarket1LTEMarketLTEFDD–CommercialDeployments2010Startin2010withmajoroperatorsinAsia(NTTDoCoMo)andNorthAmerica(Verizo
2、n)Initialdeploymentswillfocuson“HotZone”areastomaximiseaccesstohighdatausers2.6GHz,1800MHzandDigitalDividendspectrumwilldominateEuropeandAsiadeployments.USAwillfocuson700MHzandAWSTrialsprovingLTEperformancepriortocommerciallaunchLTETDD(TD-LTE)–Commercialdeployments2011KeypartofoverallLTEstand
3、ardtopreventrepeatof3GTDDfailureTD-LTEledbyCMCC,drivingittobenextgenbroadbandnetworktoreplaceGSMandTD-SCDMAUniqueGlobalAlignmentbetweenVodafone,CMCCtopromotethesuccessofTD-LTEecosystemDrivenacross2.3/2.5/3.5GHzBandsLTEisamarketreality,drivenby3GPP&3GPPoperators,>1000operatorsworldwide)2partst
4、othestandardFDDandTDD(TD-LTE)ALULTEFDDTrialsALULTETDDTrials3GPPLTE-EvolvedUTRA23GPPReferenceArchitectureGeneric3GPPNetworkArchitecture:flatIParchitectureUEtoOperatorsIPservices3GPPLTE-RadioInterfaceConcepts2.13GPPLTE-EvolvedUTRA-RadioInterfaceConcepts3GLTERequirementsPeakUplinkSpeed50(QPSK),5
5、7(16QAM),86(64QAM)in(Mbps)DataTypeAllPacketSwitchedData(Voice&Data)NoCircuitSwitchedPeakDownlinkSpeed64QAM100(SISO),172(2x2MIMO),326(4x4MIMO)100(SISO),172(2x2MIMO),326(4x4MIMO)in(Mbps)ChannelBandwidwidths1.4,3,5,10,15,20inMhzDuplexSchemesFDD&TDDMobility0-15KMPH(Optimized)0-120KMPH(HighPerform
6、ance)LatencyIdletoActivelessthan100msSmallPackets~10msSpectralEfficiencyDL:3–4timesRel6HSDPAUL:2–3timesRel6HSUPAAccessSchemeOFDMAinDownlinkSC-OFDMAinUplinkModulationTypesSupportedQPSK,16QAM,64QAM(UL&DL)3GPPLTE-EvolvedUTRA-RadioInterfaceConcepts DOWNLINK:OFDMATransmissionSchemeTheOFDMAsystemsb
7、reaktheavailablebandwidthintomanynarrowersub-carriersandtransmitthedatainparallelstreams.Eachsub-carrierismodulatedusingvaryinglevelsofQAMmodulation,e.g.QPSK,QAM,64QAMorpossiblyhigherordersdependingonsignalquality3GPPLTE-EvolvedUTRA-RadioInte
