, MS (LU, ) MSC/VLR TMSI. IMSI MSC/VLR TMSI MS, SIM-. MSC/VLR MS TMSI. , IMSI . TMSI IMSI, , . IMSI , Location Updating TMSI.
9 -
9.1 : MS IDLE
9.1 MS IDLE
1. , IMSI (IMSI attach)
2. (Location updating)
3. LA
4. MSC/VLR
5. MSC/VLR
6. , - .
7. (IMSI detach)
8. ( MS) (Implicit detach)
MS
IMSI Attached
MS ( MS), IMSI attach, :
1. MS IMSI attach , IDLE.
2. VLR , MS. , VLR HLR, MS, .
3. VLR MS IDLE.
4. MS .
9.2 IMSI attach
(LU), - IMSI attach
MS L OFF, IMSI attach MS. VLR IMSI attach , LAI LAI, SIM- MS. , VLR LAI .
LA
MS . MS Location Area (LA) VLR. MS LA, . , LA, BCCH . BCCH LAI . MS LAI LAI. LAI , , .
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9.1.2.2 MSC/VLR
MS LAI , BCCH, . MS , MSC/VLR , VLR, MSC/VLR MSC/VLR.
9.3 MSC/VLR
1. MS BCCH , LAI. LAI . , .
2. MS SDCCH. .
3. , MS .
4. LU .
9.1.2.3 MSC/VLR
(LU) , MS LA. , LA MSC/VLR. VLR LU, :
9.4 , MSC/VLR
1. . , VLR , , .
2. VLR MS, HLR VLR.
3. HLR VLR MS.
4. VLR MS, IDLE. VLR MS.