22. ѹ7 GSM. ѹ7
GSM
. 22.1 MS, BTS, BSC MSC.
. 22.1. GSM
, , () , () , (). TDMA/FDMA. LAPD ( , ISDN). MS-BTS LAPDm, GSM / . RR (Radio Resourse) , .
MM (Mobility Management) (, , ).
CM (Call Management) - (), (SMS) (SS). SMS , .
, .
SS (Supplementary Service), (, , .).
GSM (, HLR, VLR, MSC ..) ѹ7. . 22.2 ѹ7 , GSM MSC /ISDN.
. 22.2. ѹ7 MSC- /ISDN
MSC ѹ7 ( , SCCP BSSAP, Base Station Subsystem Application Part). BSSAP : (BSSMAP) (DTAP).
GSM MAP (Mobile Application Part). MAP ( MSC, OMC, AUC, BSC, HLR, VLR, EIR), , . MAP , (, handover), , , SMS. MAP INAP TCAP, SCCP (. . 20.3 20 ѹ7 ). , . - . . , , , , , .
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SCCP MTP, .
MTP - OSI;
;
;
SCCP;
.
SCCP :
;
SCCP (SCRC);
SCCP (SCMG).
MAP SCCP. GSM, , ( 20) SCCP (SCRC) SSN GT. SSN GSM ( ), ( MSC, HLR, VLR, AUC, BSS .). GSM . SSN SCCP (SCCP Sybsystem Numbers), 3GPP MAP :
1. HLR 00000110;
2. VLR 00000111;
3. MSC 00001000;
4. AUC;
5. EIR 00001001 .
GSM. VLR HLR . DPC , . HLR ( E.164). , SCCP-. DPC , (DPC+SSN). SSN, - .
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SCCP, 20 , GSM. ..
22.1 ѹ7, GSM .
22.1. GSM-
- | GSM | |
BSS- MSC | - BSS (MS, BTS, BSC) MSC. (MS) . BSSAP- (BSSMAP DTAP) | |
MSC- VLR | MAP- , VLR MSC | |
GMSC- HLR | GSM- (, MS), MAP C-. , MSC | |
D | HLR- VLR | HLR VLR MAP |
E | MSC- MSC | MAP MSC |
F | MSC- EIR | EIR MAP, (, .). IMEI |
G | VLR-VLR | MAP, , |
. 22.3 ѹ7 GSM, MSC.
. 22.3. ѹ7 GSM, MSC
22.2. /ISDN
, .
22.2.1. /ISDN -
. 22.4 /ISDN. 1 /ISDN IAM ISUP ѹ7. ISDN MSISDN (Mobile station international ISDN number). , SIM, . , HLR . /ISDN ѹ7 GMSC ( 2). GMSC MSISDN HLR GSM. 3 MAP GMSC HLR MS. ѹ7 MAP IMSI. HLR MS ( VLR). MS . . 4 MAP HLR VLR MSRN (Mobile Station Roaming Number). MSRN , . VLR MSRN . IMSI. MSRN , MSC. VLR MSRN MAP D HLR ( 5). MSRN GMSC ( 6). GMSC IAM ISUP MSC ( 7). IAM MSRN, MSC.
, MSC, IMSI MAP ѹ7 . MSRN .
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. 22.4. /ISDN
, MSC. , VLR ( 8). , MSC 10 ( ). BTS BSS 11 (PAGE) BSSAP . (12) VLR (13,14) ( ..). VLR MSC (15).
ALERT DTAP, MSC ANM ISUP GMSC /ISDN.
(. 22.4) 4 HLR MSRN IMSI. , IMSI , ( ). MS VLR VLR, VLR HLR. . 22.5 MAP MS VLR- VLR-.
1 (sendidentification) MAP G VLR-, . TMSI, Temporary Mobile Subscriber Identity (. 21, . 21.4.3.). 2 VLR- MS. HLR c MAP (sendAuthenticationInfo).
. 22.5. MAP MS VLR VLR
2, MS . MAP (updateLocation) G LAI TMSI. TMSI IMSI . IMSI, Ki . ( IMSI MS). TMSI . LAI TMSI VLR- HLR ( 3).