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Agenda.GSM900/DCS1800.TheGSMNetwork&AirInterface.TechnicalBasics.SpeechCoding.TypesofChannel.MakingaPhoneCall
Agenda.GSM900/DCS18001GlobalSystemforMobile(GroupeSpecialMobile)GSMGlobalSystemforMobile(Grou21982 GroupeSpecialMobile?iscreatedwithinCEPT1986 APermanentNucleusissetup1987 Mainradiotransmissiontechniquesarechosen, basedonprototypeevalution(1986)1989 GSMbecomesanETSItechnicalcommitte1990 Thephase1GSM900specificationsarefinalized1991 Firstsystemsarerunning1992 AllmajorEuropeanGSM900operatorsbegin commercial operatorGSMDevelopmentHistory1982 GroupeSpecialMobile?is3SpeechServicesDataServicesShortMessageServices(SMS)SupplementaryServicesSubscriberIdentityModule(SIM)SecurityFunctionGSM/DCS1800FunctionalitiesSpeechServicesGSM/DCS18004RFAspectsTDMA0.3GMSKModulationBurstPowerTransmissionNeighbourCellsMeasurementHoppingUplink/DownlinkDTxBER&ReceiverTestingRFAspectsTDMA5GSM900/DCS1800/PCS1900GSM900/DCS1800/PCS19006GSMFrequencyRange890-915MHzUplink/MSTransmit935-960MHzDownlink/BSTransmitDuplexOffset45MHzChannelSpacing200kHzChannelnumbering1-124TransmissionSpeed270KbitsGSMFrequencyRange890-915M7DCS1800FrequencyRange1710-1785MHzUplink/MSTransmit1805-1880MHzDownlink/BSTransmitDuplexOffset95MHzChannelSpacing200kHzChannelnumbering512-885TransmissionSpeed270KbitsDCS1800FrequencyRange1710-8GSMPrimaryBand890900910920930940950960Freq45MHzUplink(MobiletoBase)Downlink(BasetoMobile)GSMPrimaryBand890900910920939DCS1800PrimaryBand17101735176017851800182518501875Freq95MHzUplink(MobiletoBase)Downlink(BasetoMobile)DCS1800PrimaryBand171017351710CarriersattheborderoftheGSMband890.2890.4890.6890.8FreqGSMband200kHzCarriersattheborderofthe11CarriersattheborderoftheDCS1800band1710.21710.41710.61710.8FreqDCS1800band200kHzCarriersattheborderofthe12GSMNetworksBSCBTSBTSBTSBSSBSCBTSBTSBTSBSSMSCMSCOMCOMCADCNMCVLRVLRHLRAUCEIRInterfacetoothernetworkMSGSMNetworksBSCBTSBTSBTSBSSBSC13GSMNetworksTerminology:MS-MobileStation(移動臺)BSS-BaseStationSystem(基站系統(tǒng))BTS-BaseTransceiverStation(基站收發(fā)臺)BSC-BaseStationController(基站控制器)MSC-MobileSwitchingCentre(移動業(yè)務(wù)交換中心)OMC-OperationsandMaintenanceCentre(操作與維護中心)NMC-NetworkManagementCentre(網(wǎng)絡(luò)管理中心)AUC-AuthenticationCentre(鑒權(quán)中心)HLR-HomeLocationRegister(歸屬位置寄存器)VLR-VisitorsLocationRegister(來訪位置寄存器)EIR-EquipmentIdentityRegister(設(shè)備標(biāo)識寄存器)GSMNetworksTerminology:14MSCBSCBSCBSCPSTNBTSBTSBTSAirInterfaceAbisInterfaceSS#7SS#7GSMInterfaceMSMSCBSCBSCBSCPSTNBTSBTSBTSAirI15GMSKModulation110010110010PSKGuassianFilterSpectrum<200kHzGMSKModulation110010110010PSK16FcFc+67.708KHzFc+67.708KHz+67.708KHz-67.708KHzDataType?0DataType?1ModulationFcFc+67.708KHzFc+67.708KHz17401234567123456FrequencyAmplitudeARFCNTimeslotPhysicalChannelisanARFCNandTimeslotTDMAandFDMA401234567123456FrequencyAmplit18TDMAandFDMATerminology:FDMA-FrequencyDivisionMultipleAccessTDMA-TimeDivisionMultipleAccessARFCN-AbsoluteRFChannelNumberTS-TimeslotPhysical-TheCombinationofaTSnumberChannelsandARFCN.Logical-AreMappedonPhysicalChannelsChannelsTDMAandFDMATerminology:1910us10us10us10us8us8us3311575726
148ActiveBits,546.42us
147UsefulBits542.8us-70dB-30dB-6dB+4dB-6dB-30dB-70dBTol-1.0dBTol+1.0dBGSMTDMAPowerBurst10us10us10us10us8us8us3311575720PowerTimeTemplate542.8us/147Bits1081010810TimePower-700dBUpperLimitLowerLimitActualusNormalBurstPowerTimeTemplate542.8us/21PowerTimeTemplate321.23us/87Bits1081010810TimePower-700dBUpperLimitLowerLimitActualusAccessBurst87bitsPowerTimeTemplate321.23us/22Uplink&DownlinkDownlink/MSReceive5670123456701342067012345671342Uplink/MSTransmit5Uplink&DownlinkDownlink/MS23Uplink&DownlinkARFCN02473601350614725312645724603571321045670123456700345670123451ARFCNUPLINKDOWNLINK45MHz.UplinkLagsDownlinkby3Timeslotperiods.UplinkandDownlinkusesameTimeslotNumber.UplinkandDownlinkusesameChannelNumber(ARFCN).UplinkandDownlinkusedifferentbands(45MHzapartforGSM900)Uplink&DownlinkARFCN0247360124FrequencyHoppingMODCouplerSwitchSynthRegisterControlUplinkBS1BS2MonitoringRXLevRXQualDownlink165124165124HomeBSFrequencyHoppingMCouplerSwitc2520msBlocksSpeechCoderBitsOrdered260Bits260Bits5013278.RELPandLTPCoderRELP-Residual-ExcitedLinearPredictionCoderLTP-LongTermPrediction.ConvertsSpeechtoLowDataRate.20msSpeechmakes260Bits.Output13kbit/sVeryImportantBitsImportantBitsOtherBitsSpeechCoder20msBlocksSpeechCoderBitsOr26ErrorCorrectionTypeIa50TypeIb132TypeII7850132783TypeIaCRCTypeIbTypeIIBlockCode256625663478Re-ordering37878Halfrateconvolutionalcode456
Bitsfrom20msofSpeechTypeIaTypeIbTypeIbTypeIaTailTypeIICRC262BitsIn456BitsOutErrorCorrectionTypeIa50Type27DiagonalInterleaving456
Bitsfrom20msofSpeech456
Bitsfrom20msofSpeech575757575757575757575757575757575757575757575757575757575757TCHTrafficChannel(TCH)BurstsCarryTwo57BitsBlocks(114)Each120msofSpeech=456x6=2736bits2736/114=24burstsI.e.24frames(mobiletransmitsonceperframe)Multiframehas26framesin120msThereare2spareframes厖OneSACCH,oneIdleDiagonalInterleaving456Bits28SpeechtoRadio/RadiotoSpeechChannelcodingSpeechDigitizingandSourcecodingInterleavingBurstformattingCipheringModulationChanneldecodingSpeechSourcedecodingDe-interleavingBurstformattingDecipheringDemodulationSpeechtoRadio/RadiotoSp29MSCamponFlowChartMSTurnOnMSsearcheschannelsandordersbysignalstrengthMSStongestBCCHFCCHonBCCHandadjuststimebaseSCHonBCCHandfinetunestimebase&timingDecodeBCCH&storeinfoIsBCCHinPLMN?MSNextStongestBCCHYESNOYESNONOLocation=PreviousLocation?YESYESMScampedon-listensforpage,canrequestserviceUsingSACCH-adjustpower,TA&reportRXQualetcMSgoestotheassignedSDCCH(Freq.,timeslot,...)forauthentication+locationUpdateMSsendsRACHBSassignsSDCCHtoMSusingtheCCCHMSCamponFlowChartMSTurnO30OrignatedCallBSpagesMSusingtheCCCHMSsendsRACHBSORIGINATEDCALLMSORIGINATEDCALLMSrespondswithRACHBSassignsMStoSDCCHorTCHMStransmitsandreceivesspeechonTCHTCHUsingtheFACCHonTCHauthentication&locationupdateUsingtheSDCCH,authentication,callsetup,andTCHassignmentUsingtheSACCH,BScommandsMStoadustpower+timing,MSreportspower+RxqualityofBCCH+adjacentBCCHMStransmits+receivesspeechonTCHUsingtheSACCHonTCH,MSreportspower+Rxquality,BScommandsMStoadjustpower,TADuringinactivetimeslots,MSmeasuresadjacentcells,BCCHCalldisconnectedbyMSorBSOrignatedCallBSpagesMSusin31SubscriberIdentityModule(SIM)SIMcontains(atleast)followinginformation:IMSI
(InternationalMobileSubscriberIdentification)
MCC&MNC
(MobileCountryCodeandmobileNetworkCode)
AnyotheruserspecificinformationSubscriberIdentityModule(S32InternationalMobileSubscriberIdentity(IMSI)IMSI=MCC+MNC+MSINNMSI3digits2digitsNotmorethan15digitsIMSI = InternationalMobileSubscriberIdentityMCC = MobileCountryCodeMNC = MobileNetworkCodeMSIN = MobileStationIdentificationNumberNMSI = NationalMobileSubscriberIdentityInternationalMobileSubscribe33InternationalMobileEquipmentIdentity(IMEI)IMEI = InternationalMobileEquipmentIdentityTAC = TypeApprovalCodeFAC = FinalAssemblyCodeSNR = SerialNumberSP = SpareIMEI=TAC+FAC+SNRSP+6digits2digits6digits1digitInternationalMobileEquipment34演講完畢，謝謝觀看！演講完畢，謝謝觀看！35Agenda.GSM900/DCS1800.TheGSMNetwork&AirInterface.TechnicalBasics.SpeechCoding.TypesofChannel.MakingaPhoneCall
Agenda.GSM900/DCS180036GlobalSystemforMobile(GroupeSpecialMobile)GSMGlobalSystemforMobile(Grou371982 GroupeSpecialMobile?iscreatedwithinCEPT1986 APermanentNucleusissetup1987 Mainradiotransmissiontechniquesarechosen, basedonprototypeevalution(1986)1989 GSMbecomesanETSItechnicalcommitte1990 Thephase1GSM900specificationsarefinalized1991 Firstsystemsarerunning1992 AllmajorEuropeanGSM900operatorsbegin commercial operatorGSMDevelopmentHistory1982 GroupeSpecialMobile?is38SpeechServicesDataServicesShortMessageServices(SMS)SupplementaryServicesSubscriberIdentityModule(SIM)SecurityFunctionGSM/DCS1800FunctionalitiesSpeechServicesGSM/DCS180039RFAspectsTDMA0.3GMSKModulationBurstPowerTransmissionNeighbourCellsMeasurementHoppingUplink/DownlinkDTxBER&ReceiverTestingRFAspectsTDMA40GSM900/DCS1800/PCS1900GSM900/DCS1800/PCS190041GSMFrequencyRange890-915MHzUplink/MSTransmit935-960MHzDownlink/BSTransmitDuplexOffset45MHzChannelSpacing200kHzChannelnumbering1-124TransmissionSpeed270KbitsGSMFrequencyRange890-915M42DCS1800FrequencyRange1710-1785MHzUplink/MSTransmit1805-1880MHzDownlink/BSTransmitDuplexOffset95MHzChannelSpacing200kHzChannelnumbering512-885TransmissionSpeed270KbitsDCS1800FrequencyRange1710-43GSMPrimaryBand890900910920930940950960Freq45MHzUplink(MobiletoBase)Downlink(BasetoMobile)GSMPrimaryBand8909009109209344DCS1800PrimaryBand17101735176017851800182518501875Freq95MHzUplink(MobiletoBase)Downlink(BasetoMobile)DCS1800PrimaryBand171017351745CarriersattheborderoftheGSMband890.2890.4890.6890.8FreqGSMband200kHzCarriersattheborderofthe46CarriersattheborderoftheDCS1800band1710.21710.41710.61710.8FreqDCS1800band200kHzCarriersattheborderofthe47GSMNetworksBSCBTSBTSBTSBSSBSCBTSBTSBTSBSSMSCMSCOMCOMCADCNMCVLRVLRHLRAUCEIRInterfacetoothernetworkMSGSMNetworksBSCBTSBTSBTSBSSBSC48GSMNetworksTerminology:MS-MobileStation(移動臺)BSS-BaseStationSystem(基站系統(tǒng))BTS-BaseTransceiverStation(基站收發(fā)臺)BSC-BaseStationController(基站控制器)MSC-MobileSwitchingCentre(移動業(yè)務(wù)交換中心)OMC-OperationsandMaintenanceCentre(操作與維護中心)NMC-NetworkManagementCentre(網(wǎng)絡(luò)管理中心)AUC-AuthenticationCentre(鑒權(quán)中心)HLR-HomeLocationRegister(歸屬位置寄存器)VLR-VisitorsLocationRegister(來訪位置寄存器)EIR-EquipmentIdentityRegister(設(shè)備標(biāo)識寄存器)GSMNetworksTerminology:49MSCBSCBSCBSCPSTNBTSBTSBTSAirInterfaceAbisInterfaceSS#7SS#7GSMInterfaceMSMSCBSCBSCBSCPSTNBTSBTSBTSAirI50GMSKModulation110010110010PSKGuassianFilterSpectrum<200kHzGMSKModulation110010110010PSK51FcFc+67.708KHzFc+67.708KHz+67.708KHz-67.708KHzDataType?0DataType?1ModulationFcFc+67.708KHzFc+67.708KHz52401234567123456FrequencyAmplitudeARFCNTimeslotPhysicalChannelisanARFCNandTimeslotTDMAandFDMA401234567123456FrequencyAmplit53TDMAandFDMATerminology:FDMA-FrequencyDivisionMultipleAccessTDMA-TimeDivisionMultipleAccessARFCN-AbsoluteRFChannelNumberTS-TimeslotPhysical-TheCombinationofaTSnumberChannelsandARFCN.Logical-AreMappedonPhysicalChannelsChannelsTDMAandFDMATerminology:5410us10us10us10us8us8us3311575726
148ActiveBits,546.42us
147UsefulBits542.8us-70dB-30dB-6dB+4dB-6dB-30dB-70dBTol-1.0dBTol+1.0dBGSMTDMAPowerBurst10us10us10us10us8us8us3311575755PowerTimeTemplate542.8us/147Bits1081010810TimePower-700dBUpperLimitLowerLimitActualusNormalBurstPowerTimeTemplate542.8us/56PowerTimeTemplate321.23us/87Bits1081010810TimePower-700dBUpperLimitLowerLimitActualusAccessBurst87bitsPowerTimeTemplate321.23us/57Uplink&DownlinkDownlink/MSReceive5670123456701342067012345671342Uplink/MSTransmit5Uplink&DownlinkDownlink/MS58Uplink&DownlinkARFCN02473601350614725312645724603571321045670123456700345670123451ARFCNUPLINKDOWNLINK45MHz.UplinkLagsDownlinkby3Timeslotperiods.UplinkandDownlinkusesameTimeslotNumber.UplinkandDownlinkusesameChannelNumber(ARFCN).UplinkandDownlinkusedifferentbands(45MHzapartforGSM900)Uplink&DownlinkARFCN0247360159FrequencyHoppingMODCouplerSwitchSynthRegisterControlUplinkBS1BS2MonitoringRXLevRXQualDownlink165124165124HomeBSFrequencyHoppingMCouplerSwitc6020msBlocksSpeechCoderBitsOrdered260Bits260Bits5013278.RELPandLTPCoderRELP-Residual-ExcitedLinearPredictionCoderLTP-LongTermPrediction.ConvertsSpeechtoLowDataRate.20msSpeechmakes260Bits.Output13kbit/sVeryImportantBitsImportantBitsOtherBitsSpeechCoder20msBlocksSpeechCoderBitsOr61ErrorCorrectionTypeIa50TypeIb132TypeII7850132783TypeIaCRCTypeIbTypeIIBlockCode256625663478Re-ordering37878Halfrateconvolutionalcode456
Bitsfrom20msofSpeechTypeIaTypeIbTypeIbTypeIaTailTypeIICRC262BitsIn456BitsOutErrorCorrectionTypeIa50Type62DiagonalInterleaving456
Bitsfrom20msofSpeech456
Bitsfrom20msofSpeech575757575757575757575757575757575757575757575757575757575757TCHTrafficChannel(TCH)BurstsCarryTwo57BitsBlocks(114)Each120msofSpeech=456x6=2736bits2736/114=24burstsI.e.24frames(mobiletransmitsonceperframe)Multiframehas26framesin120msThereare2spareframes厖OneSACCH,oneIdleDiagonalInterleaving456Bits63SpeechtoRadio/RadiotoSpeechChannelcodingSpeechDigitizingandSourcecodingInterleavingBurstformattingCipheringModulationChanneldecodingSpeechSourcedecodingDe-interleavingBurstformattingDecipheringDemodulationSpeechtoRadio/RadiotoSp64MSCamponFlowChartMSTurnOnMSsearcheschannelsandordersbysignalstrengthMSStongestBCCHFCCHonBCCHandadjuststimebaseSCHonBCCHandfinetunestimebase&timingDecodeBCCH&storeinfoIsBCCHinPLMN?MSNextStongestBCCHYESNOYESNONOLocation=PreviousLocation?YESYESMScampedon-listensforpage,canrequestserviceUsingSACCH-adjustpower,TA&reportRXQualetcMSgoestotheassignedSDCCH(Freq.,timeslo
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