SGSN Gd SMS-GMSC SMS-IW-MSC. SMS GPRS SMS.
SMS GPRS , SMS .
MS, GPRS, GPRS. MS, GPRS, IMSI, GPRS. MS, GPRS, IMSI, GPRS, GSM. SMS GSM, MS SMS SGSN.
SMS GPRS:
- SMS-C , MS. SMS-C SMS-GMSC.
- SMS-GMSC HLR SMS.
- HLR , SGSN, MS, MSC . SGSN, , HLR , MS SGSN SGSN. MSC, SMS GSM.
- SGSN, SMS-GMSC SMS SGSN.
- SGSN SMS MS, SMS-C.
GPRS (GGSN)
GGSN IP . GGSN , , ISP RADIUS, . IP GGSN IP , GPRS. SGSN GGSN.
GGSN
GGSN GSPR:
- IP. GGSN IP . RADIUS IP.
- IP. SGSN GGSN ( Gi). GPRS (VPN). GPRS . IP . , . , IP. IP SGSN, GGSN ( , ). Opv4 IPSEC, MD5 (ESP), (DES-CBC). (, ..)
|
|
- . SGSN.
- . GGSN ( , PDP). SGSN. .
- . GGSN CDR MS. CDR , .
GSM 10 . . , , PCH , BCCH . GPRS . , GSM. л, Packet , , GPRS. , , GPRS PPCH Packet Paging Channel.
GPRS PTCCH (Packet Timing advance Control Channel). TA, . GSM , , SACCH.
GPRS (PS). , GPRS , (CSD), PDCH. PDCH (PSD). PDCH TCH, PS.
PDCH CS. PDCH PCU.
PSD PS PDCH. PS (TBF), : uplink downlink. MS TBF, uplink, downlink.
|
|
TBF MS PDCH. PDCH PDCH, PSET PDCH PSET MS. , PSD PDCH.