GSM呼叫流程大全

nullnullchannel requestMSBTSBSCMSCVLRnullchannel requestMSBTSBSCMSCVLR establishment cause answer for paging (MTC) emergency call call re-establishment user request (MOC, SMS, suppl.service) other serives (loc. update, IMSI detach) random numbernullchannel requestMSBTSBSCMSCVLRchannel requirednullchannel requestMSBTSBSCMSCVLRchannel required BSC starts searching for a SDCCH channel - channel available -> reservation - no channel available -> blockingnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res. BSC starts searching for a SDCCH channel - channel available -> reservation - no channel available -> blockingnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.nullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignment information included page mode timing advance channel description timeslot subchannel training sequence code RF channel number timer 3101 started in the BSCnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign. information included page mode timing advance channel description timeslot subchannel training sequence code RF channel number timer 3101 started in the BSCnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentESTABLISHMENT PARTnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service request required service mobile originated call//SMS mobile terminated call/SMS location update call re-establishment IMSI detach request timer 3101 started in the mobilenullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indication timer 3101 stopped in the BSCnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. update timer 3101 stopped in the BSCnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentimmediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestSDCCH assign.nullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentimmediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestSDCCH assign. BSC starts to initiate signalling connection control part (SCCP) connection nullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUAnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA timer 3101 stopped in the mobilenullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestCYPHERING & ENCRYPTION PARTnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestauthentication requestnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestauthentication requestA3SRESRANDKi (first 8 bits)nullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestauthentication requestauthentication responsenullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responsenullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication responsenullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering modenullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering modeciphering mode commandnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering modeciphering mode commandencryption commandnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering modeciphering mode commandencryption commandciphering mode commandnullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering modeciphering mode commandencryption commandciphering mode commandA8ciphering key (Kc)RANDKinullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering modeciphering mode commandencryption commandciphering mode commandciphering mode completenullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering modeciphering mode commandencryption commandciphering mode commandciphering mode completeciphering mode completenullchannel requestMSBTSBSCMSCVLRchannel requiredSDCCH seiz att. SDCCH busy att. Ghost CCCH Res.channel activationchannel act. ackn.immediate assignmentSDCCH assign.immediate assignmentCM service requestestablish indicationSucc. Seiz. Orig. Succ. Seiz. Term. SDCCH call re est. SDCCH emerg. call Succ. SMS est. Unsucc. SMS est. SDCCH loc. updateCM service requestUA process access requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering modeciphering mode commandencryption commandciphering mode commandciphering mode completeciphering mode completeaccess request acceptednullMSBTSBSCMSCVLR forward new TMSInullMSBTSBSCMSCVLR forward new TMSITMSI realloc. command combintation of new TMSI and LAI combintation of IMSI and LAInullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.nullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completenullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completenullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.nullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)nullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH) number of the called subscriber type of call (speech/data)nullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupnullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callnullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callcomplete callnullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callcomplete callcall proceedingnullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callcomplete callcall proceedingcall proceedingnullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callcomplete callcall proceedingcall proceedingassignment requestnullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callcomplete callcall proceedingcall proceedingassignment request command from MSC to BSC to activate channel in the A-interfacenullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callcomplete callcall proceedingcall proceedingassignment requestphys. context requestnullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callcomplete callcall proceedingcall proceedingassignment requestphys. context requestphys. context confirmnullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callcomplete callcall proceedingcall proceedingassignment requestphys. context requestphys. context confirm BSC starts searching for a TCH channel - no channel available -> queing - channel available -> reservation & activationnullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callcomplete callcall proceedingcall proceedingassignment requestphys. context requestphys. context confirmTCH request TCH norm seiz TCH req. rej. lack + A_BSC BSC starts searching for a TCH channel - no channel available -> queing - channel available -> reservation & activationnullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callcomplete callcall proceedingcall proceedingassignment requestphys. context requestphys. context confirmTCH request TCH norm seiz TCH req. rej. lack + A_BSCchannel activationnullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callcomplete callcall proceedingcall proceedingassignment requestphys. context requestphys. context confirmTCH request TCH norm seiz TCH req. rej. lack + A_BSCchannel activationchannel act. acknowledgenullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callcomplete callcall proceedingcall proceedingassignment requestphys. context requestphys. context confirmTCH request TCH norm seiz TCH req. rej. lack + A_BSCchannel activationchannel act. acknowledgeassignment commandnullMSBTSBSCMSCVLR forward new TMSITMSI realloc. commandTMSI reallocation com.TMSI reallocation completeTMSI realloc. completeTMSI ackn.setup (SDCCH)setupsend info for outg. callcomplete callcall proceedingcall proceedingassignment requestphys. context requestphys. context confirmTCH request TCH norm seiz TCH req. rej. lack + A_BSCchannel activationchannel act. acknowledgeassignment command information included channel description timeslot subchannel training sequence code RF channel number channel mode (speech/data) power level timer 3107 started mobile ch