《GPRS信令流程概覽》PPT課件

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1、GPRS信令流程概覽姜漢榮愛立信技術(shù)支持部/BeijingELS2021/7/151蘭州移動(dòng)GPRS信令流程概覽安排討論GPRS概念GPRS部分參數(shù)的含義描述部分GPRS相關(guān)的信令流程交流討論2021/7/152蘭州移動(dòng)GPRS信令流程概覽GPRS網(wǎng)絡(luò)結(jié)構(gòu)實(shí)體圖2021/7/153蘭州移動(dòng)GPRS信令流程概覽GPRS網(wǎng)絡(luò)信令結(jié)構(gòu)圖2021/7/154蘭州移動(dòng)GPRS信令流程概覽Gb接口描述連接BSS/PCU和SGSN可以同時(shí)傳輸數(shù)據(jù)和信令（SNDCP/SM,GMM,SMS）2021/7/155蘭州移動(dòng)GP

2、RS信令流程概覽Gr接口描述連接GSN和HLR與電路交換系統(tǒng)中功能相同參數(shù)的發(fā)送位置更新插入/刪除用戶數(shù)據(jù)位置刪除短消息的發(fā)送2021/7/156蘭州移動(dòng)GPRS信令流程概覽Gn接口描述GSN之間的接口有時(shí)也包含Gom/Gp接口完成功能如下：GTP業(yè)務(wù)操作維護(hù)DNS查詢漫游功能2021/7/157蘭州移動(dòng)GPRS信令流程概覽Gi接口描述GGSN與外部網(wǎng)絡(luò)(internet)的接口完全的IP協(xié)議參與手機(jī)IP地址的分配2021/7/158蘭州移動(dòng)GPRS信令流程概覽參數(shù)概念A(yù)PN:AccessPointNam

3、eQoS:QualityofServiceAddr:手機(jī)IP地址（靜態(tài)/動(dòng)態(tài)）2021/7/159蘭州移動(dòng)GPRS信令流程概覽GPRSATTACH2021/7/1510蘭州移動(dòng)GPRS信令流程概覽Gb消息（Fr/NS）Frame:118Capturedat:+05:51.639Length:69From:UserStatus:OkFrameRelay:Type:User-DataFrameRelay:FCS:0x581DFrameRelay:Frame-RelayHeader:6353<18D1>Fram

4、eRelay:000110..1101....DLCI:109FrameRelay:......0.........C/RFrameRelay:.......0........EA1FrameRelay:............0...FECNFrameRelay:.............0..BECNFrameRelay:..............0.DEFrameRelay:...............1EA2NS:PDUType:0-NS-UNITDATA<00>NS:SpareOctet:0

5、<00>NS:BVCI:508<01FC>2021/7/1511蘭州移動(dòng)GPRS信令流程概覽Gb消息（BSSGP）BSSGP:PDUType:1-UL-UNITDATA<01>BSSGP:TLLI:0x7F430E5F<7F430E5F>BSSGP:QoSProfileBSSGP:BitRate:0x100bits/sec<0000>BSSGP:Precedence:0-HighPriority<34>BSSGP:.....1..-RadioInterfaceUsesRLC/MAC-UNITDATAFun

6、ctionalityBSSGP:....0...-TheSDUContainsSignallingBSSGP:0011....-ReservedBSSGP:InformationElementType:8-CellIdentifier<08>BSSGP:IELength:8<88>BSSGP:MCCDigits:460<64F0>BSSGP:MNCDigits:00<00>BSSGP:LocationAreaCode(LAC):12638<315E>BSSGP:RAC:1<01>BSSGP:CellIde

7、ntity(CI)Value:341<0155>BSSGP:InformationElementType:0-AlignmentOctets<00>BSSGP:IELength:0<80>BSSGP:InformationElementType:14-LLC-SDU<0E>BSSGP:IELength:392021/7/1512蘭州移動(dòng)GPRS信令流程概覽Gb消息（LLC/GSML3）LLC(GPRS):FrameCheckSequenceField:0x93093A<93093A>LLC(GPR

8、S):SAPI:1-GPRSMobilityManagement(GMM)<01>LLC(GPRS):.0......-C/R(Command/Response)LLC(GPRS):0.......-ProtocolDiscriminatorLLC(GPRS):..00....-SpareLLC(GPRS):110.............-UIFormatLLC(GPRS):...00...........-Re