, / | / | ||
, | 8,0-32,0 | / | |
SMS, () | 9,6-14,4 | / | |
- | , | 144,0-384,0 | / |
, , , EDGE, GSM.
8 ().
IMT-2000 3G: () ():
2G 3G | ||
, 2G | , 3G | |
IMT2000
, - - (ITU-T) 3G: IMT- UMTS, CDMA 2000, UTRA - CDMA (2G).
- :
- IMT-DS (Direct Spread, W-CDMA / UTRA FDD);
- IMT-MC (Multi Carrier, CDMA 2000);
- IMT-TC (Time-Code, UTRA FDD / CDMA, CDMA 2000);
- IMT-SC (Single Carrier, IS-136 - AMRS);
- IMT-FT (Frequency Time, DECT).
3G.
3G 2G .
|
|
: , , , , .
I-MODE
I-MODE - , . , NTT DoCoMo - Nippon Telephone and Telegraph DoCoMo, () HTML - c HTML (Compact HTML).
EDGE
EDGE - Enhanced Data rates for GSM Evolution ETSI GSM / GPRS. IMT-2000, EDGE 384,0/ UMTS. 100,0120,0/, 230,0/.
EDGE . E-GPRS - Enhanced GPRS E-CSD (Enhanced Circuit-Switched Data). 1999 .
. , EDGE UMTS, .
3.5G
3.5G , 3G , , 2,048/, - 3,0/. , 3.5G - , - KDDI. KDDI CDMA2000. 1x.
H-SUPA 3.75G