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2 List of countries that have deployed 3G 3 References 4 Related topics 5 External links |
3G technologies are an answer to the International Telecommunications Union's IMT-2000 specification. Originally, 3G was supposed to be a single, unified, worldwide standard, but in practice, the 3G world has been split into three incompatible camps.
UMTS (Universal Mobile Telephone System), based on W-CDMA technology, is the solution generally preferred by countries that used GSM, centered in Europe. UMTS is managed by the 3GPP organisation also responsible for GSM, GPRS and EDGE.
The other significant 3G standard is CDMA2000, which is an outgrowth of the earlier 2G CDMA standard IS-95. CDMA2000's primary proponents are outside the GSM zone in the Americas, Japan and Korea. CDMA2000 is managed by 3GPP2, which is separate and independent from UMTS's 3GPP.
A less well known standard is TD-SCDMA which is being developed by the People's Republic of China.
Countries that have commercial 3G networks include:
3G Standards
UMTS (W-CDMA)
CDMA2000
TD-SCDMA
List of countries that have deployed 3G
References
Related topics
External links