GSM各种信令流程详解(20210311170628)

1、1鉴权一般过程MSBSSMSCVLRHLR/AUCREQUEST(CKSN（与呼叫建立，位置雯新，补充业努有关的业努请求）Authentication(RAND,CKSrequestNn)Authenticationresponse(SRES) 、R ESPONSE（相关业努请求接受）Authenticatiorreject相关MAP；肖息 (CKSNo,IMSI/TMSI)Authenticate(RAND,CKSNn)Authentication respon迸 (SRES) 十相关的MAPj肖息响应Send parameters(IMSI/TMSI)Authentication para

2、meters(RAND/SRES/Kc)/成功:合法I 鉴权核对、失败:非法fX合法用户:业务请求接、非法用户:业努请求拒:2位置更新操作（一）位置更新仅涉及本VLRLocation updating requestUpdate location areaCOMPLETE L3 INFORMATION(位置更新类型,CKSNo,LAIoJMSI/TMSI)Authentication requestAuthentication response(Layer 3 信息)(RAND,CKS Nn)(CKSN 丄 Alo,LAIn,IMSI/TMSI)>Authe nticati on(RAN

3、D,CKSNn)(SRES)Authentication response(SRES)Set cyphering mode【Kc和算法标识符或不进行编码的指示）Forward new TMSI(TMSI)CYPHER MODE COMMND （Kc丄3头部消息）Update location area ack.<(HLR 号)CYPHER MODE COMPLETETMSI reallocation com)leteTMSI acknowledge(cause,L3头部消息)Location updating accept(TMSIn,LAIn)f LEAR COMMAND(资源释放)C

4、LEAR COMPLETE 引立置更新操作（二）位置更新涉及本VLR和HLR（当MS进入新的VLR或MS首次登录或相关网络数据丢失 后，且MS都使用IMSI来标识自己）4呼叫接续信号流程移动用户呼叫移动用户（主被叫MS在同一MSC）（）MSaBSSaMSC -r-HSSAR3信道请iSDCChI CM serviceBSS =COMPtjETE L3 INF 0（包含為 MSCVLRHLRmKpt内部VLRAUC"WAR | r|JmMSbrequest(IMSIng卜（SCCP喪续确认消 ICC）©Wl里配压晟4陽Qe% spM欣f(包含CM service req<

5、;Authentication reqi est(RAN >CKSNn)匕 CIPHER MODE C CIPHER MODEgOMPLET 呼叫建立Setup (Call proceed.ASSIGNMENT ASSIGNMENT?MMANresp onsdIkc?ECYPHECYPHELocatioAuthenticate « (RAND,CKSNn) Authen res.(SRES, 岩ciphering mode< awtnt)rWPcMSI,RAND/SRES/Kcb(IMSI'RA*SRES/KC)样权鏡槪坍icate 启动加密Recess req,

6、 accepte iJXuthentication parameters '(RANDSRES/Kc,M*"(RAND被叫号申MSISDN/Send info, for o/g 钧 .Complete CallAuthentication rsponsesetup(包含service indcation,call nUpdate locationInserte s融scribJbscriber dataer data insertonack.PV.REQUCOMPESTETE1包含所薔赢）呼叫処理信基本业务和补充业:Send routing info. （Mcancel lo

7、catiorcyphering nodeUpdate4(HLocation ack.can cel locatior ack. /fR MO1 upcfe?E COMMON擾对iMSI就COM碣鹭叶infomdtinq accente Routin9TMSI yallocali。扎舖僦0叽毗役ioncomEei壬CLEZ-故癞淞Ab CLEKCOMHL先前的VLR从jE在 S访本VLR的MS"中删除相渓E丁 数据LETE L3 INFORMATION (包含Page response)± P$ge response5呼叫接续信号流程移动用户呼叫移动用户（主被叫MS在同一MS

8、C中）（二）MSaUmBSSaMSCVLRHLR连接证实CON CONF(SCCFProcess access 爭q.Authe nticate (RAND,CKSN n)Send para. x (IMSI/TMSI)Authen. para.1lMSI,RANb/SRESAUCAMSbBSSb接续确认消息CC）S/Kc)tication request(RAN【),CKSNn)AutherAuthentication(SRESASSIGNMENT RECUESTASSIGNMENT COMPLETEigect连接证实Connect ack no wledge/IMAND(Kc) dPLET

9、ECIPHER MODE CO! CIPHER MODE COI呼叫建立Stlip 呼叫证实 Cw II con finned提醒Alerti连接Conn内部.AUT INFO REQ.=> AUT INFO PROV =(IMSI,RAND/SRE iC JAuthentication re爭onse(SRES)£et cyphering mode ©ccess request ac u Complete call:eptedy“ ConnectCon nectacknowledge.Alerting完成呼叫（回送被叫用户数据）回铃音网路接续通话TCH振铃应答6呼叫

10、接续流不_挂机过程UmMSaBSSaMSCVLRHLRAUC(-)主叫先挂机断连Disc onnect释放完成Relea(被叫先挂机断连释放Release:e completeCLEAR COMMAND断连 Disconnect释放 ReleaseCLEAR COMPLETEDisc onnectRelease浑放完成 Release completefLEAR COMMAN释放元成Release清除命令CLEAR清除完成CLEARMSC释放陆地信這和物理连接CLEAR COMPLETE断连释放释放完成AUmBSSbCOMPLETEDisco nnectReleaseRelease compl

11、etecompleteCOMMMAND清躺令 CLEAR COMMAND清除完成CLEAR COMPLETEMSC释放陆地信進和物理连接7呼叫接续信号流程固定用户呼叫移动用户（一）PSTNTUPiH GMSC内部接口AUCHLRVLRVMSCUm BSSb -+ MSbIAM(MSISDN)、Send roi (MSISDNting infomation"补充业务信息）Provide roamingnu mberRouti nginformation ack.w roaming number1AM为来话发送信息>丈 Send info for i/c (cell setup)

12、Page MS(LAI) .AUTJNFOJEQ ALJTINFOPRONTSdjarameterprocess access req.Authentication parame7i苗兀帀而丽谡ers.) Authenticate > (启动鉴权)'COMPLETE L3 “ INFORMATlOh产.Page response连接证实CON C（)NF；"汐Authentication reque>t(RAND?CKSNn).Authentication resp,A)nse(SRES)寻呼PAGINGf uthentication response '

13、(鉴权响应)8呼叫接续流# 一_固定用户呼叫移动用户（二）加密后动接收接入请求呼叫完成Set cyphering mode ,Access request acceptComplete call（回送用户信息）ACMANSACMANS通话7丿口密模式完成CIPHE/MODECOMPLE，*呼叫建立Setup、A,呼叫证实CallconfirmedW指配请求ASSIGNREQUEST、“指配完成ASSIGNCOMPLETE _:提醒Alerting连接Conn ect连接证实ConnectAckno wledge ,R加密模式命令CIPHED）TCH振铃被叫应答9呼叫接续信号流不_固定用户呼叫移

14、动用户的挂机过程GMSC释放陆地 信道与物理连接>ReleaseT径放完成Release completeCLEAR COMMAND,清除命令LEAR COMPLETE清除完成拆线Disconnect拆线Disconnect释放ReleaseGMSC释放陆地 信道与物理连接* 轻放完成CLEAR COMMAND, fLEAR COMPLETERelease complete清除命令清除完成10切换控制流程同MSC基站间切换BSS1和MS间无线传输信号测星HANDOVER REQUIRED(目标小区表)切换请求 HANDOVER REQUEST (PCM&Channel type)

15、切换确认 HANDOVER REQUEST ACKNOWLEDGE（参数L3信息携芾了栓接口上的HANDOVER COMMAND消息 它包含New TCH号切换参考号）切换命令 HANDOVER COMMAND（包含Target channel并携帝了无线接口上 HANDOVER COMMAND 消息）鳩命令handover COMMAND通过原BSS,让MS5专到新的信道（包含New TCH和切换参考号）切换检测 HANDOVER DETECT切换完成HANDOVEFCOMPLETE« 切换检测 HANDOVER DETECT 切换完成 HANDOVER COMPLETE，MS进入

16、目标小区切换命令证实CLEAR COMMAND释放PCMCLEAR COMPLETE<释放资源11切换控制流程基本切换处理MS移动UmBSS1MSCaMSCbPerform handover（MAP） （全球目标小区标识 全球月鹘小区标识信道类型）无线传输信号测量丁HANDOVER REQ.（全球目标小区表）（分配切换号吃BSS2UmVLRbHANDOVER REQUESTHANDOVER REQUESTACKNOWLEDGE(PCM&Channel type)（包含NewTCH和切按参考号）Allocationhandover numberHANDOVER CMD<经原B

17、SS让MS转到新的信道ANDOVER COMMANDRadio channel ack.(MAFJ 包含 NewTChHON.)IAMACM>Send handover r( port (HON.)（发送切换报吉）无线信道证实切换检测切换完成HANDOVER DETECT HANDOVER COMPLETECLEAR COMMAND* Send end signal(MAP) 释放PCMO发送结束信号BSS$斤选TCH连到PCMfe路 MS进/、目标小区CLEAR COMPLETEANS释放(TUP/ISUP)09> 拆去MSCa和MSCb的物理生接结束信号End signal(M

18、AP)Handover report释放切换报告'12切换控制流程后续切换流程（MS离开MSCb漫游到MSCbJMS漫游> MSMSCaMSCbMSCb*VLRbVLRb*BSS2*BSS2无线传输信号测粵尹行后续切换Pertonn s】执行切换（目标小区标识,HANDOVER REQUIRE jbsequent handover(MAP Perform handover 服务小区标识，信道类型)（目标小区表）（目标小区标识収务小区标识NSC号）HANDOVER RECUEST (PCM&Channel ty>e)c (MAP)(包含New TCH号I AMACM后续切换证实 Subsequent handover ack HANDOVER COh艸ND切换命令发送结束信号Send end signal (MAP)ANS结束信号En释放仃UP）j signal (MAP)CLEAR COMMAND C CLEAR C