GSM呼叫流程動畫

1、channelrequestMSBTSBSCMSCVLRchannelrequestMSBTSBSCMSCVLR establishment cause answer for paging (MTC) emergency call call re-establishment user request (MOC, SMS, suppl.service) other serives (loc. update, IMSI detach) random numberchannelrequestMSBTSBSCMSCVLRchannelrequiredchannelrequestMSBTSBSCMSCV

2、LRchannelrequired BSC starts searching for a SDCCH channel - channel available - reservation - no channel available - blockingchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res. BSC starts searching for a SDCCH channel - channel available - reservation - no chann

3、el available - blockingchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.channelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH s

4、eiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignment information included page mode timing advance channel description t

5、imeslotsubchanneltraining sequence codeRF channel number timer 3101 started in the BSCchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign. information included page mode timing advance channel descr

6、iption timeslotsubchanneltraining sequence codeRF channel number timer 3101 started in the BSCchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentchannelrequestMSBTSBSCMSCVLRchann

7、elrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentESTABLISHMENT PARTchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentS

8、DCCH assign.immediateassignmentCM servicerequestchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequest required service mobile originated call/SMS mobile terminated

9、 call/SMS location update call re-establishment IMSI detach request timer 3101 started in the mobilechannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishi

10、ndicationchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindication timer 3101 stopped in the BSCchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH sei

11、z att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. update timer 3101 stopped in the

12、BSCchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentimmediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SD

13、CCH loc. updateCM servicerequestSDCCH assign.channelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentimmediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH e

14、merg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestSDCCH assign. BSC starts to initiate signalling connection control part (SCCP) connection channelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassig

15、nmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUAchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.chan

16、nelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA timer 3101 stopped in the mobilechannelrequestM

17、SBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH l

18、oc. updateCM servicerequestUA processaccess requestchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH

19、call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestCYPHERING &ENCRYPTION PARTchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.imm

20、ediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthenticate requestchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy at

21、t.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthe

22、nticate requestauthentication requestchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SD

23、CCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthenticate requestauthentication requestauthentication requestchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateas

24、signmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthenticate requestauthentication requestauthentication requestA3S

25、RESRANDKi (first 8 bits)channelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. ca

26、llSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthenticate requestauthentication requestauthentication requestauthentication responsechannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.i

27、mmediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthenticate requestauthentication requestauthentication

28、requestauthentication responseauthentication responsechannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCC

29、H call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication responsechannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH

30、 seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA pro

31、cessaccess requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering modechannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediat

32、eassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthenticate requestauthentication requestauthentication request

33、authentication responseauthentication responseauthentication response set ciphering modeciphering mode commandchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequest

34、establishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication

35、 response set ciphering modeciphering mode commandencryption commandchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ.

36、Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering modeciphering mode

37、 commandencryption commandciphering mode commandchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDCCH cal

38、l re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering modeciphering mode commandencryption c

39、ommandciphering mode commandA8ciphering key (Kc)RANDKichannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.SDC

40、CH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering modeciphering mode commandencryp

41、tion commandciphering mode commandciphering mode completechannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Seiz. Orig.Succ. Seiz. Term.

42、SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering modeciphering mode commandenc

43、ryption commandciphering mode commandciphering mode completeciphering mode completechannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCH seiz att.SDCCH busy att.Ghost CCCH Res.channelactivationchannelact. ackn.immediateassignmentSDCCH assign.immediateassignmentCM servicerequestestablishindicationSucc. Se

44、iz. Orig.Succ. Seiz. Term.SDCCH call re est.SDCCH emerg. callSucc. SMS est.Unsucc. SMS est.SDCCH loc. updateCM servicerequestUA processaccess requestauthenticate requestauthentication requestauthentication requestauthentication responseauthentication responseauthentication response set ciphering mod

45、eciphering mode commandencryption commandciphering mode commandciphering mode completeciphering mode completeaccess request acceptedMSBTSBSCMSCVLR forward new TMSIMSBTSBSCMSCVLR forward new TMSITMSI mand combintation of new TMSI and LAI combintation of IMSI and LAIMSBTSBSCMSCVLR forward new TMSITMSI

46、 mandTMSI reallocation com.MSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeMSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteMSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation complet

47、eTMSI pleteTMSI ackn.MSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)MSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH) number of the called subscriber type

48、 of call (speech/data)MSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)setupMSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)setupsend info for outg. callMS

49、BTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)setupsend info for outg. callcompletecallMSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)setupsend info for

50、outg. callcompletecallcallproceedingMSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)setupsend info for outg. callcompletecallcallproceedingcall proceedingMSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallo

51、cation completeTMSI pleteTMSI ackn.setup (SDCCH)setupsend info for outg. callcompletecallcallproceedingcall proceedingassignmentrequestMSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)setupsend info for outg. callcompletecallcal

52、lproceedingcall proceedingassignmentrequest command from MSC to BSC to activate channel in the A-interfaceMSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)setupsend info for outg. callcompletecallcallproceedingcall proceedingass

53、ignmentrequestphys. contextrequestMSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)setupsend info for outg. callcompletecallcallproceedingcall proceedingassignmentrequestphys. contextrequestphys. contextconfirmMSBTSBSCMSCVLR for

54、ward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)setupsend info for outg. callcompletecallcallproceedingcall proceedingassignmentrequestphys. contextrequestphys. contextconfirm BSC starts searching for a TCH channel - no channel available - quein

55、g - channel available - reservation & activationMSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)setupsend info for outg. callcompletecallcallproceedingcall proceedingassignmentrequestphys. contextrequestphys. contextconfirmTCH

56、requestTCH norm seizTCH req. rej. lack + A_BSC BSC starts searching for a TCH channel - no channel available - queing - channel available - reservation & activationMSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)setupsend info

57、for outg. callcompletecallcallproceedingcall proceedingassignmentrequestphys. contextrequestphys. contextconfirmTCH requestTCH norm seizTCH req. rej. lack + A_BSCchannelactivationMSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)

58、setupsend info for outg. callcompletecallcallproceedingcall proceedingassignmentrequestphys. contextrequestphys. contextconfirmTCH requestTCH norm seizTCH req. rej. lack + A_BSCchannelactivationchannel act.acknowledgeMSBTSBSCMSCVLR forward new TMSITMSI mandTMSI reallocation com.TMSI reallocation com

59、pleteTMSI pleteTMSI ackn.setup (SDCCH)setupsend info for outg. callcompletecallcallproceedingcall proceedingassignmentrequestphys. contextrequestphys. contextconfirmTCH requestTCH norm seizTCH req. rej. lack + A_BSCchannelactivationchannel act.acknowledgeassignment commandMSBTSBSCMSCVLR forward new

60、TMSITMSI mandTMSI reallocation com.TMSI reallocation completeTMSI pleteTMSI ackn.setup (SDCCH)setupsend info for outg. callcompletecallcallproceedingcall proceedingassignmentrequestphys. contextrequestphys. contextconfirmTCH requestTCH norm seizTCH req. rej. lack + A_BSCchannelactivationchannel act.