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1、My Text(18#宋體,半角),text(16#宋體,半角),text(14#宋體,半角),text(14#宋體,半角),text(14#宋體,半角),Title of the Slide(24#宋體,粗體,半角),GSM,呼叫流程,目的,和,和內(nèi),容,容,目的,介紹,GSM,正常,的,的呼,叫,叫流,程,程(,空,空中,接,接口,、,、,A-bis,接口,和,和,A,接口,),),介紹,部,部分,常,常見(jiàn),的,的異,常,常中,斷,斷的,流,流程,內(nèi)容,GSM,網(wǎng)絡(luò),協(xié),協(xié)議,介,介紹,GSM,邏輯,信,信道,介,介紹,無(wú)線(xiàn),鏈,鏈路,建,建立,流,流程,(,(,RadioandLinkE
2、stablishmentProcedure,),),TCH,正常,分,分配,流,流程,(,(,NormalAssignmentProcedure),主叫,流,流程,(,(,OriginatingCall,),),被叫,流,流程,(,(,TerminatingCall,),),位置,更,更新,流,流程,(,(,LocationUpdating),切換,流,流程,(,(,HandoverProcedure,),),呼叫,釋,釋放,流,流程,(,(,CallReleaseProcedure,),),信道,釋,釋放,流,流程,(,(,ChannelReleaseProcedure),GSM,協(xié)議,層,
3、層數(shù),無(wú)線(xiàn),網(wǎng),網(wǎng)絡(luò),優(yōu),優(yōu)化,主,主要,關(guān),關(guān)心,第,第三,層,層的,信,信令,無(wú)線(xiàn),網(wǎng),網(wǎng)絡(luò),優(yōu),優(yōu)化,主,主要,關(guān),關(guān)心,DTAP,、,、RSL,的信,令,令,無(wú)線(xiàn),網(wǎng),網(wǎng)絡(luò),優(yōu),優(yōu)化,主,主要,關(guān),關(guān)心,DTAP,、,、BSSMAP,和部,分,分,SCCP,的信,令,令,DTAP,RSL,OML,GSM網(wǎng),絡(luò),絡(luò)協(xié),議,議,Layer3,介紹,RR:,無(wú)線(xiàn),資,資源,管,管理,(,(,RadioResourceManagement),由,MS,、,、BTS,和,BSC,控制,功能,舉,舉例,Paging,管理,(,(,PagingManagement),加密,管,管理,(,(,Ciph
4、eredModeManagement,),),頻點(diǎn),分,分配,(,(,FrequencyRedefinition,),),信道,分,分配,(,(,DedicatedChannelAssignment,),),切換,(,(,HandoverManagement,),),測(cè)量,和,和功,率,率控,制,制(,MeasuresandPowerControl,),),MM:,移動(dòng),性,性管,理,理(,MobilityManagement),由,MS,和,MSC/VLR,控制,功能,舉,舉例,鑒權(quán),和,和身,份,份識(shí),別,別(,Authentication/IdentificationProcedures
5、,),),位置,更,更新,(,(,LocationUpdating),IMSIAttach/Detach,GSM網(wǎng),絡(luò),絡(luò)協(xié),議,議,CC:,呼叫,控,控制,(,(,CallControl,),),由,MS,和,MSC,控制,功能,舉,舉例,呼叫,處,處理,和,和路,由,由(,Callprocessingandrouting),雙音,多,多頻,(,(,DTMFFacilities),短消,息,息服,務(wù),務(wù)(,ShortMessageService),附加,服,服務(wù),(,(,SupplementaryService),GSM網(wǎng),絡(luò),絡(luò)協(xié),議,議,呼叫,流,流程,中,中常,用,用的,邏,邏輯,信,
6、信道,PCH,尋呼,信,信道,(,(,PagingChannel,),),RACH,隨機(jī),接,接入,信,信道,(,(,RandomAccessChannel),AGCH,接入,認(rèn),認(rèn)可,信,信道,(,(,AccessGrantChannel,),),SDCCH,獨(dú)立,專(zhuān),專(zhuān)用,控,控制,信,信道,(,(,Stand-aloneDedicatedControlChannel),SACCH,慢聯(lián),系,系控,制,制信,道,道(,SlowAssociatedChannel),TCH,話(huà)務(wù),信,信道,(,(,TrafficChannel),FACCH,快聯(lián),系,系控,制,制信,道,道(,FastAsso
7、ciatedControlChannel),GSM呼,叫,叫流,程,程中,常,常用,的,的邏,輯,輯信,道,道,PCH,RACH,AGCH,SDCCH+SACCH,TCH/FACCH+SACCH,定義,手機(jī),與,與網(wǎng),絡(luò),絡(luò)間,建,建立,一,一個(gè),無(wú),無(wú)線(xiàn),鏈,鏈路,,用,于,于信,令,令傳,送,送,包括,以,以下,四,四個(gè),步,步驟,Paging,過(guò)程,(,(,PagingProcedure,),)(,僅用,于,于被,叫,叫流,程,程中,),),隨機(jī),接,接入,過(guò),過(guò)程,(,(,RandomAccessProcedure),立即,分,分配,過(guò),過(guò)程,(,(,ImmediateAssignme
8、ntProcedure,),),SCCP,聯(lián)接,建,建立,過(guò),過(guò)程,(,(,SCCPConnectionEstablishmentProcedure),當(dāng)手,機(jī),機(jī)需,要,要與,網(wǎng),網(wǎng)絡(luò),發(fā),發(fā)生,聯(lián),聯(lián)系,時(shí),時(shí),,必,必須,要,要先,建,建立,無(wú),無(wú)線(xiàn),鏈,鏈路,和,和,A,接口,的,的信,令,令連,接,接,無(wú)線(xiàn),鏈,鏈路,建,建立,流,流程,MS,BTS,BSC,MSC,ChannelRequest,ChannelRequired,ChannelActivation,(,(SD),ChannelActAck,(,(SD),ImmediateAssignment,Command,UIImm
9、Assignment/ImmAssExt,ST9103,ET9103,ST3126,ET3126,ST3101,SABML3Info,EstIndL3Info,SCCPConRqrdL3,SCCPConnConfirm,ET3101,ST9105,ET9105,UAL3Info,(,RACH,),)(EstCause,RndNbr),(,EstCause,RndNbr,TA,),),RACH_TA_Filtering,(,TA,BS/MS_TxPwr-Max,Chann),Timer;,S-Start;,E-End,Entity,信令消息,空中接口,Abis,接口,A,接口,(,RndNbr,
10、TDMAFrame Nbr,Chan,,,,TA),(,AGCH,),),同時(shí)對(duì)兩,個(gè),個(gè),MS,分配,SDCCH,(,SDCCH),BSC,開(kāi)始對(duì),MS,發(fā)出的上,行,行,DTAP,消息排隊(duì),(,(如,CM ServAbort,消息)。,如,如果收到,MS,發(fā)出的,Classmark Change,消息,,BSC,會(huì)在,SCCP,連接完成,后,后發(fā),Classmark Update,消息給交,換,換機(jī),如,CM ServReq,PagRes,LocUpdate Req,等,SetAsynchronousBalanceMode。,在任何新,信,信道登陸,時(shí),時(shí)均會(huì)有,SABM,過(guò)程,Unnum
11、bered Ack,無(wú)線(xiàn)鏈路,建,建立流程,無(wú)線(xiàn)鏈路,建,建立流程,異常,情,情況,對(duì)不同的,呼,呼叫類(lèi)型,有,有不同的,等,等待時(shí)間,:,:,WI_EC/CR/OC/OP.(OP,主要指,LU,被叫沒(méi)有,相,相應(yīng)等待,時(shí),時(shí)間),SDCCH,擁塞,如果,BSC,在收到,ChannelRequired,時(shí),相應(yīng),小,小區(qū)沒(méi)有,空,空閑的,SDCCH,BSC,將會(huì),如果小區(qū),參,參數(shù),En_Imm_Ass_Rej=“True,”,”,,則發(fā),ImmediatelyAssignment Reject,否則忽略,ChannelRequired,消息,T9103,超時(shí),BSC,發(fā),RF Channel
12、 Release,消息到,BTS,BSC,收到,ChannelActivation NAck,消息,BSC,內(nèi)部釋放,BTS,的相應(yīng)無(wú),線(xiàn),線(xiàn)信道(沒(méi)有任,何,何消息在,Abis,接口上傳,送,送,),T3101,超時(shí),Layer 3,無(wú)法建立,BSC,發(fā),RF Channel Release,到,BTS,T9105,超時(shí),BSC,通過(guò)呼叫,釋,釋放過(guò)程,(,(,CallReleaseProcedure),釋放原先,建,建立的,SDCCH,連接,在,A,接口,,,BSC,向,MSC,發(fā),SCCP,釋放請(qǐng)求,在,RF,部分,,,BSC,向手機(jī)和,BTS,發(fā)信道釋,放,放消息,僅在,BSC,內(nèi)部資
13、源,表,表中釋放,,,,在,Abis,上沒(méi)有信,令,令傳送,當(dāng)信道激活不成功時(shí)觸發(fā)的,BTS RF Chan Rel,不包含,Phys Cont Req,過(guò)程,BSC,收到,Establish Indication,消息,但,消,消息中不,含,含,Layer 3Information,BSC,向手機(jī)和,BTS,發(fā)信道釋,放,放消息,Abis,上的其它,異,異常中斷,消,消息的處,理,理,BSC,收到,Error Indication,Cause,為:,“,T200Expiry”:,監(jiān)視,SABM,和,UA,過(guò)程,“,UnsolicitedDM Response”(,發(fā)生在,Disconnect
14、,過(guò)程中),“,SequenceError”,釋放:,A,接口上,,BSC,發(fā),Clear Request“RadioInterface Failure”,到交換機(jī),BSC,向手機(jī)和,BTS,發(fā)信道釋,放,放消息,BSC,收到,Connection Failure indication(Cause:RadioLink Failure),在,A,接口上,,BSC,發(fā),Clear Request“RadioInterface Failure”,到交換機(jī),BSC,向,BTS,發(fā),RF Channel Release,消息,BSC,收到,ReleaseIndication,當(dāng)收到手,機(jī),機(jī)發(fā)出的,DI
15、SC,消息,A,接口上,,BSC,發(fā),Clear Request“RadioInterface Failure”,到交換機(jī),BSC,向手機(jī)和,BTS,發(fā)信道釋,放,放消息,無(wú)線(xiàn)鏈路,建,建立流程,異常,情,情況,MS,BTS,BSC,MSC,Authentication Req,Ciphering Mode Cmd,Authentication Req,Authentication Req,Authentication Resp,Authentication Resp,Authentication Resp,Encryption Command,Ciphering Mode Cmd,Ciphe
16、ring Mode Cmp,Ciphering Mode Cmp,Ciphering Mode Cmp,TMSIReallocCmd,TMSIReallocCmd,TMSIReallocCmd,TMSIReallocCmp,TMSIReallocCmp,TMSIReallocCmp,Authentication,Ciphering,TMSIRealloc,ST3260,ET3260,*,Authentication Reject*,Identification,Identification Request,ST3270,ET3270,IdentificationRequest,IdentificationRequest,IdentificationResponse,IdentificationResp,IdentificationResponse,ST3250,ET3250,(,RAND),(,SRES),RAND,與,Ki,經(jīng)過(guò),A3,算法得,到,到,SRES;,經(jīng)過(guò),A8,算法得,到,到,Kc,比較,SRES,(,IMSI),選擇加,密,密算法,(,PermittedAlg,Kc)