《GPRS信令流程概览》PPT课件.ppt
GPRS信令流程概览姜汉荣爱立信技术支持部/Beijing ELS2022/11/281兰州移动 GPRS信令流程概览安排l讨论GPRS概念lGPRS部分参数的含义l描述部分GPRS相关的信令流程l交流讨论2022/11/282兰州移动 GPRS信令流程概览GPRS网络结构实体图 2022/11/283兰州移动 GPRS信令流程概览GPRS网络信令结构图2022/11/284兰州移动 GPRS信令流程概览Gb接口描述l连接BSS/PCU和SGSNl可以同时传输数据和信令（SNDCP/SM,GMM,SMS）2022/11/285兰州移动 GPRS信令流程概览Gr接口描述l连接GSN和HLRl与电路交换系统中功能相同参数的发送位置更新插入/删除用户数据位置删除短消息的发送2022/11/286兰州移动 GPRS信令流程概览Gn接口描述lGSN之间的接口l有时也包含Gom/Gp接口l完成功能如下：GTP业务操作维护DNS查询漫游功能2022/11/287兰州移动 GPRS信令流程概览Gi接口描述lGGSN与外部网络(internet)的接口l完全的IP协议l参与手机IP地址的分配2022/11/288兰州移动 GPRS信令流程概览参数概念lAPN:Access Point NamelQoS:Quality of ServicelAddr:手机IP地址（静态/动态）2022/11/289兰州移动 GPRS信令流程概览GPRS ATTACH2022/11/2810兰州移动 GPRS信令流程概览Gb消息（Fr/NS）lFrame:118 Captured at:+05:51.639lLength:69 From:User Status:OklFrame Relay:Type:User-Data lFrame Relay:FCS:0 x581DlFrame Relay:Frame-Relay Header:6353 lFrame Relay:000110.1101.DLCI:109lFrame Relay:.0.C/RlFrame Relay:.0.EA1lFrame Relay:.0.FECNlFrame Relay:.0.BECNlFrame Relay:.0.DElFrame Relay:.1 EA2lNS:PDU Type:0-NS-UNITDATA lNS:Spare Octet:0 lNS:BVCI:508 2022/11/2811兰州移动 GPRS信令流程概览Gb消息（BSSGP）lBSSGP:PDU Type:1-UL-UNITDATA lBSSGP:TLLI:0 x7F430E5F lBSSGP:QoS ProfilelBSSGP:Bit Rate:0 x 100 bits/sec lBSSGP:Precedence:0-High Priority lBSSGP:.1.-Radio Interface Uses RLC/MAC-UNITDATA Functionality lBSSGP:.0.-The SDU Contains Signalling lBSSGP:0011.-ReservedlBSSGP:Information Element Type:8-Cell Identifier lBSSGP:IE Length:8 lBSSGP:MCC Digits:460 lBSSGP:MNC Digits:00 lBSSGP:Location Area Code(LAC):12638 lBSSGP:RAC:1 lBSSGP:Cell Identity(CI)Value:341 lBSSGP:Information Element Type:0-Alignment Octets lBSSGP:IE Length:0 lBSSGP:Information Element Type:14-LLC-SDU lBSSGP:IE Length:39 2022/11/2812兰州移动 GPRS信令流程概览Gb消息（LLC/GSM L3）lLLC(GPRS):Frame Check Sequence Field:0 x93093A lLLC(GPRS):SAPI:1-GPRS Mobility Management(GMM)lLLC(GPRS):.0.-C/R(Command/Response)lLLC(GPRS):0.-Protocol DiscriminatorlLLC(GPRS):.00.-SparelLLC(GPRS):110.-UI Format lLLC(GPRS):.00.-ReservedlLLC(GPRS):Unconfirmed Sequence Number N(U):0lLLC(GPRS):.0.-No Encryption lLLC(GPRS):.1-Protected Mode BitlGSM L3:Protocol Discriminator:Mobility Management Messages for GPRS lGSM L3:TI Flag:The Message is sent from the side that originates the TI lGSM L3:Transaction ID:02022/11/2813兰州移动 GPRS信令流程概览Gb消息（GMM/SM）lGMM/SM:Message Type:1-Attach Request lGMM/SM:IE Type:MS network capabilitylGMM/SM:Length:1 lGMM/SM:MS value:244 lGMM/SM:1.:GEA1:Encryption algorithm GEA/1 available lGMM/SM:.1.:SM capabilities via dedicated channels:Supported lGMM/SM:.1.:SM capabilities via GPRS channels:Supported lGMM/SM:.1.:UCS2 support:No preference between the default alphabet and the UCS2 lGMM/SM:.01.:SS Screening Indicator:capability of handling of ellipsis notation l and phase 2 error handlinglGMM/SM:.0.:SoLSA Capability:The ME does not support SoLSA lGMM/SM:.0:Padding bitlGMM/SM:IE Type:Attach typelGMM/SM:Type of attach:GPRS attach:1 2022/11/2814兰州移动 GPRS信令流程概览Gb消息（GMM/SM）lGMM/SM:IE Type:Ciphering key sequence numberlGMM/SM:.111.Key sequence:7 No key is available(MS-network)/Reserved(network-MS)lGMM/SM:IE Type:DRX parameterlGMM/SM:Split PG Cycle Code:8 lGMM/SM:Split on CCCH:Split pg cycle on CCCH is not supported by the mobile station 0 lGMM/SM:Non-DRX timer:Max.4 sec non-DRX mode after transfer state 3lGMM/SM:IE Type:Mobile identitylGMM/SM:Length:8 lGMM/SM:Odd/even indicator:odd number of identity digits lGMM/SM:Type of identity:IMSI lGMM/SM:Identity digits:460002423301430 lGMM/SM:IE Type:Routing area identificationlGMM/SM:MCC digits:000 lGMM/SM:MNC digits:00 lGMM/SM:Location area code:0 lGMM/SM:Routing area code:0 lGMM/SM:IE Type:MS Radio Access capabilitylGMM/SM:Length:10 lGMM/SM:Value:0 x14D3823148FFCC81E080 2022/11/2815兰州移动 GPRS信令流程概览Gr消息（MTP）l 1.dc:BIB l .1011100 :BSN l 1.e5:FIB l .1100101 :FSN l 00.3f:未用l .111111 :LI=0 x3f.111111l 10.83:SIO_SSF l .00.:未用l .0011 :SIO_SI SCCP 消息l 00000101 05:DPC 3-FF-5l 11111111 ff:DPC l 00000011 03:DPC l 00000101 05:OPC 1-FF-5l 11111111 ff:OPC l 00000001 01:OPC l 00000100 04:SLS 0 x4l 2022/11/2816兰州移动 GPRS信令流程概览Gr消息（SCCP）l 00001001 09:单位数据 UDT l 00000001 01:连接协议类型 有序的无连接类 l 10010011 93:被叫用户地址表示语 l .1 :信令点表示语包括信令点 l .1.:SSN 表示语包括SSN l .0100.:全局码翻译类型,编码计划,设计,地址性质 l .0.:路由表示语GT选路由 l 被叫用户 PC:01-ff-05l 00000110 06:归属位置寄存器(HLR)l .0001 71:编码设计 BCD,奇数个数字 l 0111.:编码计划 ISDN/移动编号计划 l .0100 04:0000100 国际号码 l 被叫用户 值:861393149056077l 00010010 12:主叫用户地址表示语 l .0 :信令点表示语未包括信令点 l .1.:SSN 表示语包括SSN l .0100.:全局码翻译类型,编码计划,设计,地址性质 l .0.:路由表示语GT选路由 l 10010101 95:服务GRPS支持接点 l .0010 12:编码设计 BCD,偶数个数字 l 0001.:编码计划 ISDN/电话编号计划 l .0100 04:0000100 国际号码 l 主叫用户 值:8613742106 2022/11/2817兰州移动 GPRS信令流程概览Gr消息(TCAP)l=TCAP 部分=l 01100010 62:开始 l 01001000 48:起源 ID l 起源 ID值 :01D644l 01101011 6b:TCAP 对话部分 l 00101000 28:外部 l 00000110 06:目标识别 l 非结构化对话值:00118605010101l 10100000 a0:目标识别 l 01100000 60:对话类型 对话请求 l 10000000 80:协议版本 l 协议版本值 :0780l 10100001 a1:应用上下文名称 l 00000110 06:目标识别 l 应用上下文名称值:04000001002003l 01101100 6c:TCAP 成分部分 l 2022/11/2818兰州移动 GPRS信令流程概览Gr消息(MAP)l=Map 部分=l 10100001 a1:成分调用 l 00000010 02:调用 ID l 调用 ID值 :01l 00000010 02:本地操作码 l 00010111 17:MAP 操作码 GPRS更新位置 l 00110000 30:.GPRS更新位置 l 00000100 04:.IMSI l IMSI值 :.460003149056077l 00000100 04:.SGSN l .0001 91:.编码方案 ISDN/电话方案 l .001.:.地址性质 国际号码 l 1.:.扩展表示语 无扩展 l SGSN值 :.8613742106l 00000100 04:.GSN 地址 l GSN 地址 :1.2.3.4 l EOC值 :.00002022/11/2819兰州移动 GPRS信令流程概览PDP激活过程2022/11/2820兰州移动 GPRS信令流程概览Gn消息（IP header)lIP:Version=4 lIP:IHL=20 ByteslIP:Type of Service:0 x00 lIP:Routine lIP:Normal Delay lIP:Normal Throughput lIP:Normal Reliability lIP:Total Length=157 lIP:Identification=8867 lIP:Flags&Fragment Offset:0 x0000 lIP:0.ReservedlIP:.0.May Fragment lIP:.0.Last Fragment lIP:Fragment Offset=0 ByteslIP:Time to Live=63 Seconds/Hops lIP:Protocol:17 UDP lIP:Header Checksum=0 xA495 lIP:Source Address=211.138.6.129 211.138.6.129 lIP:Destination Address=211.138.6.130 211.138.6.130 2022/11/2821兰州移动 GPRS信令流程概览Gn消息(basic GTP)lUDP:Source Port=GPRS Tunnelling Protocol(GTP)lUDP:Destination Port=GPRS Tunnelling Protocol(GTP)lUDP:Length=137 lUDP:CheckSum=0 x04CA lGTP:000.Version:0 lGTP:.1.Protocol Type GTP lGTP:.0 SNDCP N-PDU Number Not Present lGTP:.1111.ReservedlGTP:Message Type:16-Create PDP Context Request lGTP:Message Length:109 lGTP:Sequence Number:1 lGTP:Flow Label:0 lGTP:SNDCP N-PDULLC Number:255-Not Used lGTP:Reserved:16777215 lGTP:Tunnel Identifier(TID)lGTP:MCC Digits:460 lGTP:MNC Digits:00 lGTP:MSIN Digits:4046000002 lGTP:NSAPI:52022/11/2822兰州移动 GPRS信令流程概览Gn消息(QoS)lGTP:IE Type:6-Quality of Service(QoS)lGTP:Quality of Service(QoS):lGTP:Delay class:Delay class 4(best effort)lGTP:Reliability class:Unacknowledged GTP and LLC;Acknowledged RLC,Protected data lGTP:Peak throughput:Up to 128000 octet/s lGTP:Precedence class:Normal priority lGTP:Mean throughput:Best effort lGTP:IE Type:14-Recovery lGTP:Restart Counter:0 lGTP:IE Type:15-Selection Mode lGTP:Selection Mode Value:1-MS Provided APN,Subscription Not Verified lGTP:IE Type:16-Flow Label Data I lGTP:Flow Label Data:0 lGTP:IE Type:17-Flow Label Signalling lGTP:Flow Label Signalling:0 lGTP:IE Type:128-End User Address lGTP:IE Length:2 2022/11/2823兰州移动 GPRS信令流程概览Gn消息(APN)lGTP:PDP Type Organization:1-IETF lGTP:PDP Type Number:33-IPv4 lGTP:IE Type:131-Access Point Name lGTP:IE Length:6 lGTP:APN Value:.cmnet lGTP:IE Type:132-Protocol Configuration Options lGTP:IE Length:53 lGTP:Configuration protocol:PPP for use with IP PDP type lGTP:Protocol ID:PAP lGTP:Length of protocol ID:6 lPAP:Code=1 Authenticate Request lPAP:Identifier=1 lPAP:Length=6 lPAP:Peer ID Length=0 lPAP:Peer ID=lPAP:Password Length=0 lPAP:Password=lGTP:Protocol ID:IPCP lGTP:Length of protocol ID:40 2022/11/2824兰州移动 GPRS信令流程概览Gn消息(IP控制协议）lIPCP:Code=Configure-Request lIPCP:Identifier=1 lIPCP:Length=40 lIPCP:lIPCP:Option Type=2 IP Compression Protocol lIPCP:Length=6 lIPCP:Protocol=Van Jacobson Compressed TCP/IP lIPCP:Max-Slot-ID=15 lIPCP:Comp-Slot-ID=1 Slot Identifier May Be Compressed lIPCP:lIPCP:Option Type=3 IP Address lIPCP:Length=6 lIPCP:IP Address=0.0.0.0(Peer Provide The IP Address Info.)lIPCP:2022/11/2825兰州移动 GPRS信令流程概览Gn消息(DNS)lIPCP:Option Type=129 Primary DNS Server Address lIPCP:Length=6 lIPCP:Primery DNS Address:0.0.0.0 lIPCP:lIPCP:Option Type=130 Primary NBNS Server Address lIPCP:Length=6 lIPCP:Primery NBNS Address:0.0.0.0 lIPCP:lIPCP:Option Type=131 Secondary DNS Server Address lIPCP:Length=6 lIPCP:Primery DNS Address:0.0.0.0 lIPCP:lIPCP:Option Type=132 Secondary NBNS Server Address lIPCP:Length=6 lIPCP:Primery DNS Address:0.0.0.0 2022/11/2826兰州移动 GPRS信令流程概览Gn消息(计费部分）lGTP:IE Type:133-GSN Address lGTP:IE Length:4 lGTP:GSN Address:211.138.6.129 lGTP:IE Type:133-GSN Address lGTP:IE Length:4 lGTP:GSN Address:211.138.6.129 lGTP:IE Type:134-MSISDN lGTP:IE Length:8 lGTP:MSISDN number:lGTP:1.No Extension lGTP:.001.Nature Of Address:International Number lGTP:.0001 Numbering Plan Indicator:ISDN/Telephony Numbering Plan lGTP:Number:8613604040267 2022/11/2827兰州移动 GPRS信令流程概览总结lGPRS实体/信令结构l各个接口功能lATTACH 过程lPDP 激活过程2022/11/2828兰州移动 GPRS信令流程概览课程资料lGPRS System SurveylGPRS CSS OperationlGPRS BSS Operationl北京ELS(Ericsson Local Support)lHotline:010-65610304lEmail:gs-2022/11/2829兰州移动 GPRS信令流程概览谢谢！讨论开始2022/11/2830兰州移动 GPRS信令流程概览
