1-CDMA2000 1X Overview

[e-mail]entTeamNetworkR&DCenterCDMA20001XOverview2003.12.ContentsOverview■OverviewofCDMA2000■CDMA20001XChannelStructure■ForwardLinkChannel■ReverseLinkChannel■ServiceFeature■IntroductiontoSKTelecom’sCDMA2000Ⅰ.OverviewofCDMA2000CDMA20001XIMT2000IS-95A/B2.5G2.5GtechnologyismoreadvancedthantheexistingIS-95A/B(2G)andpartlyadoptssynchronousIMT-2000(3G)3G2GTechnologicalBackgroundTechnologicalBackground2G3G~14.4Kbps~384Kbps~64K/115Kbps~2Mbps~30Kbps~30Kbps~64K/115Kbps~9.6Kbps~2Mbps~128K/384Kbps~64K/115KbpsNorthAmericaEuropeJapanIS-95A(IS-95B)(EDGE)GPRSGSMTDMA(IS-136HS)IS-136+PDCW-CDMAIS-95AIS-95CIS-95BCDMADS/MCcdma200W-CDMAIS-95CMultipleAccessConceptFDMA-FrequencyDivisionUserseparatedbyfrequency(30KHzChannels)TDMA-TimeDivisionUserseparatedbyfrequencyandtime(30KHzChannelswith6timeslots)CDMA-CodeDivisionUserseparatedbydigitalcodeAF,TTF1234FT1234MultipleAccessConcept1GWfTimeAMPSAMPS2GWfTimeTDMAGSMCodefTimeCDMAIS-95A/B1.2288Mcps2GCodefTimeTD-CDMA3GCodefTimecdma20003GCodefTimeW-CDMA(MC)3G3.84McpsFrequencyBand&Bandwidth•SR1Mode(1X)•SR3Mode(3X)….Data1.2288Mcps….Data3.6864Mcps•1.25MHzfullduplexbandwidth–“SpreadingRate1(SR1)”,or“1x”•3.75MHzfullduplexbandwidth–“SpreadingRate3(SR3)”,or“3x”SpreadingRate–ForwardLink•SR3MC•SR3DS–ReverseLink•SR3SR1,1.2288McpsSR3,MC,FAnSR3,MC,FAbSR3,DS,FAaSR3,DS,FAbChannelCoding•FEC(ForwardErrorCorrection)95A/BSystemErrorCorrectionCodeConvolutionalCodeCDMA2000Voice&LowSpeedDataConvolutionalCodeHighSpeedDataTurboCodeChannelCoding•ConvolutionalCode•TurboCodeCodingRate9.6kParameter14.4k1/3→1/41/2→3/8ChangeConstituentEncoder#1ConstituentEncoder#1TurboInterleaverInformationBitsPuncturingandRepetitionChannelCoding•FECPerformanceCapacitylimitTurboConvolutionalPblock2-3dB1dBEb/NoKeyDesignCharacteristics–BackwardCompatibilitywithIS-95A/B–SupportofwideRFchannelbandwidths:1.25MHz(1X)or3.75MHz(3X)……….–DataRatesupto307.2kbps(1X)or1.0368Mbps(3X)…….–Increasedperformanceandcapacity•FastForwardPowerControl•ForwardLinkTransmitDiversity•AuxiliaryPilots•Coherentpilotbasedreverselink–BatteryPowerSaving•QuickPagingChannelCDMA20001XDataSpeed무선탑9.6kbpsIS-95A무선탑9.6kbpsIS-95B9.6kbps9.6kbps9.6kbps9.6kbps9.6kbps9.6kbps9.6kbps76.8kbps무선탑153.6//307.2kbpsIS-95CTransmissionRatesandServices=Excellent=Fair=PoorIMT-2000IS-95C(3X)/EDGEIS-95C(1X)/GPRSIS-95B/HSCSD2G(IS-95A/GSM)DataRate(bps)Voice,SMSE-mailWirelessInternetDatabaseAccessFileTransferStillImageTransferLowerQualityVideoHighQualityVideo9.6K14.4K32K64K144K384K2MLocationServicesServiceOptionServiceOptionTypeofServiceBasicVariableRateVoice(8Kbps)MobilestationLoopback(8Kbps)EnhancedVariableRateVoice(8Kbps)AsynchronousData(9.6Kbps)Group3Facsimile(9.6Kbps)PacketDataService(9.6Kbps)MobilestationLoopback(13Kbps)AsynchronousData(14.4Kbps)ShortMessageService(Rateset1)ShortMessageService(Rateset1)PacketDataService(14.4Kbps)HighRateVoiceService(13Kbps)Group3Facsimile(14.4Kbps)ServiceOption123457912614151713TypeofService95BMDRPacketDataService(RS1forward,RS1reverse)95BMDRPacketDataService(RS1forward,RS2reverse)95BMDRPacketDataService(RS2forward,RS1reverse)95BMDRPacketDataService(RS2forward,RS2reverse)ServiceOption22232425TypeofServiceIS-2000HighspeedPacketDataServiceServiceOption33IS-95AIS-95BMDRIS-2000DataCDMA20001XNetworkConfiguration•IWF:InterWorkingFunction•GAN:GlobalATMNetwork•HLR:HomeLocationRegister•DCN:DataCoreNetwork•PDSN:PacketDataServingNode•PDGN:PacketDataGatewayNode•R:Router•SCE:ServiceCreationEnvironment•SMS:ServiceManagementSystem•SCP:ServiceControlPointMSCRAAAServerIWFIntelligentPeripheralHLRSCPSCE/SMSBTS64BTS1BSC12PDSNGANBTS1BSC1RInternetPSTNPLMNPCIS-2000Signaling+TrafficVoicePathMSDataPathApplicationServerDCNO&MServerPDGNMS–CoherentDemodulationbasedreversepilot–FastForwardpowercontrol:1.25ms–AuxiliaryPilotforsmartantenna–ForwardTransmitDiversityIncreasedCapacity→Twice95A/BCDMA20001XCDMA20001XCapacityFactorForwardChannelReverseChannel9.6Kbps14.4Kbps9.6Kbps14.4KbpsReversePilotFactorEffectXCoherentDemodulationbasedreversepilot2.0dB(3.0dB-1.0dB)PowerControlFactorEffectPCDelayDecrease&ContinuousPCPMRM/EIB→FastPC(800Hz)AuxiliaryPilotFactorEffect+1.5dB+0.5dBTxDiv.FactorEffectNewIntroduction+3.0dB(Pedestrian)→+0.5dB(HighSpeedVehicle)XR=1/2→1/4R=3/4→3/8+0.5dB+2.0dBR=1/3→1/4R=1/2→3/8+0.2dB+0.3dBTotal+2.5dB∼+5.0dB+2.4dB∼+2.6dB+0.2dB+0.3dB•CapacityIncreaseSummaryCDMA20001XCapacityCDMA20001XCapacity1XIS-95A/B45sub30sub126sub84subomni3sector1XIS-95B(dataonly)144Kx2+30sub64Kx3144Kx6+72sub64Kx5omni3sectorThroughput/sector/carrier=370Kbps(144Kx2+76.8Kx1)•VoiceOnlyItemItem•Voice&DataTypeIS-95AIS-95BCdma20001x20001xEV_DOEV_DV??Throughput(bps)14.4k64k153.6k2.4M/300k5.2MCapacityVoice/Data30Subs30Subs45subs/260K900K(DataOnly)Over900KServiceVoiceSMSPACA,OTABasicLBSCNAP,NDSSIMSI,TMSISimpleIP/MobileIPVPNAdvancedLBSHighQualityVideoServiceCompatibility-IS-95ACompatibleIS-95A/BCompatibleDataTypeCircuitCircuit(Variable)Circuit/PacketCircuit/PacketCircuit/PacketStandbyTime-SameasIS95ATwicethanIS-95ATwicethanIS-95ATwicethanIS-95AFeatureStillImageLowQuality