2019信息通信：From Cellular Network to Access Network课件.ppt

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1、FromCellularNetworktoAccessNetworkWhatWehaveRead…Reference:WirelessCommunicationsPrinciplesandPratice(2Ed)WCDMA移动通信技术wimaxforum.org/homewirelessman.org/3gpp.org/TheFirstGenerationCellularNetworkTheAirInterfaceisAnalog,but…TheMSC-SS7/PSTN-MSCisDigitalSo,HowToTrans

2、mitdigitizedata?...WehaveT1/E1standardsForVoicedata----ThroughPSTNincircuitswitching,and…ForSignal/Controldata-----SignalingSystemNo.7(SS7),inpacketswitchingOtherthanPSTN,WecanuseX.25,ISDN,B-ISDN,ATMTheSecondGenerationCellularSystem----GSM,architectureTheThirdGen

3、erationCellularSystem:WCDMA,architectureUTRAFDDAirInterfaceProtocolArchitectureOtherAccessNetworkTechniquesCompetingwiththe3G----Wi-Fixoreillynet/pub/a/wireless/2019/08/28/wireless_bridging.htmlOtherAccessNetworkTechniquesCompetingwiththe3G----Wi-MaxOtherAccessN

4、etworkTechniquesCompetingwiththe3G----Wi-Max