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1、1,上海大唐移动通信设备有限公司 2003.12,GSM移动通信系统原理培训讲义 无线接口信令协议,2,Um 接 口 信 令,3,GSM系统专用协议群,DTAP,DTAP Direct Transfer Application Part,BSSMAP BSS Management Application Part,CM Call Management,MM Mobile Management,RR Radio Resource Management,SCCP Signalling Connection Control Part,MAP Mobile Application Part,TCAP
2、Transaction Capability Application Part,ISUP ISDN User Part,MTP Message Transfer Part,CM,MM,RR,Sig. layer 2,Layer 1 (air),Sig. layer 2,Sig. layer 1,MTP,SCCP,BSSMAP,RR,(CM+MM),MS,BSC,MTP,MTP,SCCP,SCCP,CM,MM,BSSMAP,TCAP,MAP,I,S,U,P,MSC,Sig. layer 2,Layer 1,(air),BTS,(CM),(MM),(RR),(CM),(MM),(RR),(CM),
3、(MM),(LAPDm),(LAPDm),(LAPD),Sig. layer 2,Sig. layer 1,(LAPD),BTSM,BTSM,RR,BTSM BTS Management,Um Interface,Abis Interface,A-interface,Inter-MSC,Interface,4,Channel Request Establishment Cause emergency call Call re-establish Location update Answer to paging: same as channel needed in Paging NECI=0:
4、MO&procedure be complete with SDCCH NECI=1: MO TCH/F Procedure be complete with SDCCH Random Reference,立即指配流程,MS,BSS,Immediate Assignment L2 Pseudo length Protocol discriminator Skip indication Message type-N(SD) for MS side Page mode Channel description Random reference Timing advance Mobile alloca
5、tion Starting time IA rest octets,T3126,Protocol discriminator Call control;call related SS messages Mobility management messages Radio resource management messages,Skip indication Other than 0 should be ignore,Page mode Normal paging Extended paging Paging reorganization Same as before,Channel desc
6、ription Channel type and TDMA offset SDCCH/8+SACCH/8+subchannel SDCCH/4+SACCH/4+subchannel TCH/F+ACCH TN TSC Hopping channel single channel:ARFCN RF hopping channel:HSN+MAIO,Request reference Random Access Information T1/T2/T3FN T1=(FN/1326)mod 32 T2=(FN)mod 26 T3=(FN)mod 51 (FN)mod 42432=51x(T3-T2)
7、mod 26)+T3+51x26xT1,Mobile allocation Index for CA,Starting time T1/T2/T3,IA rest octets MAIO+Mobile allocation (frequency parameters before time),Immediate Assignment Extended Page mode Channel description1 Random reference1 Timing advance1 Channel description2 Request reference2 Timing advance2 Mo
8、bile allocation Starting time IA rest octets,Immediate Assignment Reject Page mode Random reference1 Waiting Indication1 Random reference2 Waiting Indication2 Random reference3 Waiting Indication3 Random reference4 Waiting Indication4,Waiting Indication T3122:0255 second,SS+T-1,0max(8,T)-1,T3101,T20
9、0:235ms,RR响应寻呼,允许接入网络,T3122,T3126:T+2S5 second,RACH,RACH,AGCH,AGCH,SDCCH,SDCCH,SDCCH,5,Paging Request Type1 Paging mode Channel needed for mobile1 Mobile identity1(IMSI/TMSI) Channel needed for mobile2 Mobile identity2(IMSI/TMSI),寻呼流程,MS,BSS,Paging Request Type2 Paging mode Channel needed for mobile
10、1 Mobile identity1(TMSI) Channel needed for mobile2 Mobile identity2(TMSI) Channel needed for mobile3 Mobile identity3(IMSI/TMSI),Paging Request Type3 Paging mode Channel needed for mobile1 Mobile identity1(TMSI) Channel needed for mobile2 Mobile identity2(TMSI) Channel needed for mobile3 Mobile ide
11、ntity3(TMSI) Channel needed for mobile4 Mobile identity4(TMSI),PCH,PCH,AGCH,AGCH,SDCCH,SDCCH,T3113,Paging Response Ciphering key sequence Mobile station classmark 2 MS identity(IMSI/TMSI),Classmark Information 2 Phase1/Phase2 MS Controlled Early Classmark Sending RF Power Capability Pseudo Synchroni
12、zation Capability Supplementary Service Screening Indication MT SMS pt. To pt. Capability Frequency Capability(GSM900 Extended?) A5/1;A5.2;A5/3 Classmark 3,6,Measurement report BA-used DTX-used Meas-valid Rxlev_full/sub(serving cell) Rxqual_full/sub(serving cell) NO-NCELL-M Rxlev(neighbor cell 16) B
13、CCH-Freq-Ncell(16) BSIC-Ncell(16),SACCH流程,MS,BSS,SACCH Downlink L1 Header Ordered MS power level Ordered timing advance,SACCH Uplink L1 Header Actual MS power level Actual timing advance,SACCH,SACCH,SACCH,SACCH,7,ASSIGNMENT COMMAND Channel description Power command Cell channel description Starting time Mobile allocation(after time) Mobile allocation(before time) Channel mode,指配流程,MS,BSS,SDCCH,SDCCH,FACCH,FACCH,T3107,FACCH,FACCH,SDCCH,ASSIGNMENT C
