GSM移动通信系统原理第3部分

1PTTC信息产业部GSM900/DCS1800GSM网络陆地接口与信令2MBPSTrunksX.25接口C7接口A接口Abis接口BSS信令分层结构2PTTC信息产业部GSM900/DCS18002MBPSTrunksAUCHLRMSCEIRIWFTCBSCBTSBTSBTSECNMCOMCVLRMSCIWFTCECVLRTCPSTNBSCBTSBTSBTSBTSBTSBTSBSS3PTTC信息产业部GSM900/DCS18002MBPS典型结构...TS3031313010234...151617C7signalling（也可使用其它TS）FrameAlignment/AlarmTRAFFIC15TCHTRAFFIC15TCH01234567......bitno.4PTTC信息产业部GSM900/DCS1800X.25接口AUCHLRMSCEIRIWFTCBSCBTSBTSBTSECNMCOMCVLRMSCIWFTCECVLRTCPSTNBSCBTSBTSBTSBTSBTSBTSBSSNMC5PTTC信息产业部GSM900/DCS1800C7接口TUPBSSMAPAUCHLRMSCEIRIWFTCBSCBTSBTSBTSECNMCOMCVLRMSCIWFTCECVLRTCPSTNBSCBTSBTSBTSBTSBTSBTSBSSBSSAPDTAPMAP6PTTC信息产业部GSM900/DCS1800移动C7信令分层结构Session5MAPTCAPBSSAP(DTAP+BSSMAP)TUPISUPSCCPMTP3MTP2MTP12Mb/sTrunkApplication7Presentation6Transportation4Network3Link2Physical1OSILayersSS#743217PTTC信息产业部GSM900/DCS1800A接口Trunk3Trunk2Trunk3Trunk2Trunk1Trunk3Trunk2Trunk1Trunk3Trunk23028...16.1023..2931FAS/NFASTCHTCHTCHTCHTCHTCH...TCH...C7SignallingTRAUMSCFAS/NFASTCHTCHTCHTCHNotused...TCH...TCHC7SignallingNotusedNotused3028...16.1023..2931FAS/NFASTS1TS2TS3TS4TS1TS2TS3TS4TS1TS2TS3TS4TS5TS6TS7TS8Trunk1/SYNC......TS5TS6TS7TS8......102345...61415161718192021223031TS13TS14TS15n.u.TS13TS14TS15n.u.TS17TS18TS19TS20NotusedTS17TS18TS19TS20C7SignallingTS17TS18TS19TS20TS21TS22TS22TS23TS21TS22TS23TS24TS13TS14TS15n.u.TS13TS14TS15n.u.BSCTrunk3Trunk2Trunk18PTTC信息产业部GSM900/DCS1800Abis（LAPD）接口LAPDLAPDmAUCHLRMSCEIRIWFTCBSCBTSBTSBTSECNMCOMCVLRMSCIWFTCECVLRTCPSTNBSCBTSBTSBTSBTSBTSBTSBSS9PTTC信息产业部GSM900/DCS1800Abis接口信道映射TS765432100FAS/NFAS1Air0Air1Air2Air3TRX12Air4Air5Air6Air73Air0Air1Air2Air3TRX54Air4Air5Air6Air75Air0Air1Air2Air3TRX26Air4Air5Air6Air77Air0Air1Air2Air3TRX68Air4Air5Air6Air79Air0Air1Air2Air3TRX310Air4Air5Air6Air711Air0Air1Air2Air3TRX712Air4Air5Air6Air713Air0Air1Air2Air3TRX414Air4Air5Air6Air715Air0Air1Air2Air3TRX816Air4Air5Air6Air7TS7654321017notused18notused19PartialO&Mdata20notused21O&Msignalling22TRX8signalling23TRX7signalling24TRX6signalling25TRX5signalling26notused27TRX4signalling28TRX3signalling29TRX2signalling30TRX1signalling31notused星状连接结构信道映射10PTTC信息产业部GSM900/DCS1800Abis接口信道映射链状连接结构信道映射TS765432100FAS/NFAS1Air0Air1Air2Air3BTS1/TRX12Air4Air5Air6Air73Air0Air1Air2Air3BTS3/TRX14Air4Air5Air6Air75Air0Air1Air2Air3BTS1/TRX26Air4Air5Air6Air77Air0Air1Air2Air3BTS3/TRX28Air4Air5Air6Air79Air0Air1Air2Air3BTS2/TRX110Air4Air5Air6Air711Air0Air1Air2Air3BTS4/TRX112Air4Air5Air6Air713Air0Air1Air2Air3BTS2/TRX214Air4Air5Air6Air715Air0Air1Air2Air3BTS4/TRX216Air4Air5Air6Air7TS7654321017notused18PartialO&Mdata19BTS4/TRX2signalling20BTS4/TRX1signalling21BTS3/TRX2signalling22BTS3/TRX1signalling23BTS2/TRX2signalling24BTS2/TRX1signalling25BTS1/TRX2signalling26BTS1/TRX1signalling27BTS4/O&Msignalling28BTS3/O&Msignalling29BTS2/O&Msignalling30BTS1/O&Msignalling31传输控制信息11PTTC信息产业部GSM900/DCS1800Abis接口信令分层结构TRXMCCMRLMDCMLAPDD信道用户数据（CC，RR，MM）高层Layer3Layer2Layer1TRXM：TRX管理CCM：公共信道管理RLM：无线链路管理DCM：专用信道管理12PTTC信息产业部GSM900/DCS1800LAPD帧结构7654321076543210校验和0111111001111110Addressfield16bitControlfield16bitLayer3dataFCSEA0C/RSAPIEA0TEISAPI：业务接入点识别TEI：终端端点识别（区别不同的TRX）SAPI优先级含义02无线信令（无线信令链路，RSL）621O&M消息（O&M链路，OML）631Layer2管理13PTTC信息产业部GSM900/DCS1800GSM系统接口GAAbisUmAUCHLRMSCEIRIWFTCBSCBTSBTSBTSECNMCOMCVLRMSCIWFTCECVLRTCPSTNBSCBTSBTSBTSBTSBTSBTSBSSBCHDEF14PTTC信息产业部GSM900/DCS1800GSM空中接口调制10011高斯数字预滤波MSK调制GaussianMinimumShiftKeying15PTTC信息产业部GSM900/DCS1800GSM调制频谱16PTTC信息产业部GSM900/DCS1800GSM的FDMA/TDMA结构时间频率f5f4f3f2f0f1TS0TS1TS2TS3TS4TS5TS6TS7TS0TS1TS2TS3TS4TS5TS6TS7TS0TS1TS2TS3TS4TS5TS6TS7TS0TS1TS2TS3TS4TS5TS6TS7TS0TS1TS2TS3TS4TS5TS6TS7TS0TS1TS2TS3TS4TS5TS6TS7TDMA帧17PTTC信息产业部GSM900/DCS1800时隙与TDMA帧0123456701234567TDMAFRAME1TDMAFRAME2时隙突发序列（BURST）18PTTC信息产业部GSM900/DCS1800空中接口信道物理信道逻辑信道业务信道语音信道数据信道随路控制信道控制信道广播控制信道公共控制信道专用控制信道19PTTC信息产业部GSM900/DCS1800TCHTrafficChannelsSpeechDataTCH/FSTCH/HSTCH/9.6TCH/2.4TCH/9.6TCHSACCHFACCH20PTTC信息产业部GSM900/DCS1800CcHControlChannelDCCHACCHSDCCHFACCHSACCHBCCHSCHBCCHCCCHRACHPCH/AGCHCBCHBCCHNBNBNBFBNBABSBNB/ABNB/DB21PTTC信息产业部GSM900/DCS1800TDMA帧号基站识别码：BSIC（BaseStationIdentitycode）同步信道消息网络色码(NCC):3bits基站色码(BCC):3bitsNCCBCC22PTTC信息产业部GSM900/DCS1800BCCH广播系统消息位置区识别号（LAI）移动台需监视的邻小区列表本小区使用的频率列表小区识别号功率控制指示DTX允许指示接入控制（例：紧急呼叫，呼叫禁止）CBCH描述23PTTC信息产业部GSM900/DCS1800系统消息1(仅用于跳频)小区信道描述RACH控制参数系统消息2邻小区说明PLMN允许指示RACH控制参数系统消息类型系统消息3小区识别号位置区识别号控制信道说明小区选项小区选择参数RACH控制参数24PTTC信息产业部GSM900/DCS1800系统消息类型系统消息4位置区识别号小区选择参数RACH控制参数CBCH信道说明系统消息5邻小区说明系统消息6小区识别号位置区识别号小区选项PLMN允许指示系统消息7,8系统消息4的扩展25PTTC信息产业部GSM900/DCS1800GSM复帧TRAFFICCHANNELS120TDMAMultiframes01234567012345670123456701234567891011121314151617181920212223242526-TDMAMultiframes26PTTC信息产业部GSM900/DCS1800GSM复帧CONTROLCHANNELS120TDMAMultiframes0123456701234567012345670123453839404142434445464748495051-TDMAMultiframes27PTTC信息产业部GSM900/DCS1800TCH复帧252015121050TTTTTTSACCHIDLE252015121050TTTTTTSACCHIDLE上行下行T=TCH28PTTC信息产业部GSM900/DCS1800BCCH/CCCH复帧0FSBBBBCCCCFSCCCCCCCCFSCCCCCCCCFSCCCCCCCCFSCCCCCCCCI10203040500RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR102030405029PTTC信息产业部GSM900/DCS1800SD