MS |
SSS |
BSS |
:
- (MS Mobile station), ;
- (BSS Base Station System) MS;
- (SSS Switching Subsystem), (MSC) - , MS .
, :
- MS BSS ;
- BSS SSS, ;
- (, E1 2,048 /, Ethernet).
MS BSS, - (generation -> G):
1G NMT-450 (Nordic Mobile Telephone 1978 .) FDMA 450 .
1G AMPS (Advanced Mobile Phone Service . 1983 .) FDMA 900 .
2G GSM (Group Special Mobile Global System for Mobile Communications . 1990 .) TDMA/FDMA 4 850 , 900 , 1800 , 1900 .
2G cdmaOne IS-95 (. 1995 .) - CDMA .
3G CDMA2000 (. 1999 .) IS-95, . 2100 .
3G UMTS WCDMA (Universal Mobile Telecommunications Systemc Wide-CDMA . 2001 .) - , .
4G LTE Advanced (Long-Term Evolution 2009) OFDMA, IP , / MIMO.
.
LTE Advanced |
UMTS |
4G |
5G |
3G HSPA+ - |