UMTS (W-CDMA)
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 organization also responsible for GSM, GPRS and EDGE.
FOMA, launched by Japan's NTT DoCoMo in 2001, is generally regarded as the world's first commercial 3G service. CDMA2000
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. TD-SCDMA
A less well known standard is TD-SCDMA which is being developed in the People's Republic of China by the companies Datang and Siemens. They are predicting an operational system for 2005.
List of countries that have deployed 3G Countries that have commercial 3G networks include:
Argentina (CDMA2000 1x)
Australia (W-CDMA) (CDMA2000 1x)
Austria (W-CDMA)
Azerbaijan (CDMA2000 1x)
Belarus (CDMA2000 1x)
Bermuda (CDMA2000 1x)
Brazil (CDMA2000 1x)
Canada (CDMA2000 1x)
Chile (CDMA2000 1x)
China (CDMA2000 1x)
Colombia (CDMA2000 1x)
Cyprus (W-CDMA)
Denmark (W-CDMA)
Dominican Republic (CDMA2000 1x)
Ecuador (CDMA2000 1x)
Finland (W-CDMA)
Georgia (CDMA2000 1x)
Germany (W-CDMA)
Greece (W-CDMA)
Guatemala (CDMA2000 1x)
Hong Kong (W-CDMA)
India (CDMA2000 1x)
Indonesia (CDMA2000 1x)
Israel (W-CDMA)
Italy (W-CDMA)
Jamaica (CDMA2000 1x)
Japan (W-CDMA, CDMA2000 1x)
Kazakhstan (CDMA2000 1x)
Kyrgyzstan (CDMA2000 1x)
Mexico (CDMA2000 1x)
Moldova (CDMA2000 1x)
Netherlands (W-CDMA)
New Zealand (CDMA2000 1x) (W-CDMA in testing)
Nicaragua (CDMA2000 1x)
Nigeria (CDMA2000 1x)
Norway (W-CDMA)
Pakistan (CDMA2000 1x)
Panama (CDMA2000 1x)
Peru (CDMA2000 1x)
Poland (CDMA2000 1x)
Portugal (W-CDMA)
Romania (CDMA2000 1x)
Russia (CDMA2000 1x)
Singapore (W-CDMA)
Slovenia (W-CDMA)
South Korea (CDMA2000 1x)
South Africa (W-CDMA in testing)
Spain (W-CDMA)
Sweden (W-CDMA)
Taiwan (CDMA2000 1x)
Thailand (CDMA2000 1x)
United Arab Emirates (W-CDMA)
United Kingdom (W-CDMA)
United States (CDMA2000 1x) (W-CDMA in testing)
Uzbekistan (CDMA2000 1x)
Venezuela (CDMA2000 1x)
Vietnam (CDMA2000 1x)
3.5G
High-Speed Downlink Packet Access or HSDPA is a mobile telephony protocol. Also called 3.5G (or "3½G"). High Speed Downlink Packet Access (HSDPA) is a packet-based data service in W-CDMA downlink with data transmission up to 8-10 Mbit/s (and 20 Mbit/s for MIMO systems) over a 5MHz bandwidth in WCDMA downlink. HSDPA implementations includes Adaptive Modulation and Coding (AMC), Multiple-Input Multiple-Output (MIMO), Hybrid Automatic Request (HARQ), fast cell search, and advanced receiver design.
4G
4G (or 4-G) is a wireless access technology. It describes two different but overlapping ideas.
High-speed mobile wireless access with a very high data transmission speed, of the same order of magnitude as a LAN connection. It has been used to describe wireless Local Area Network technologies like Wi-Fi and other potential successors of the current 3G mobile telephone standards.
0G
0G refers to pre-mobile phones such as radio telephones that some had in cars before the real invention of mobile phones.
One such technology is the Autoradiopuhelin (ARP) launched in 1971 in Finland as the country's first public commercial mobile phone network.
1G
1G (or 1-G) is short for first-generation wireless telephone technology, mobile phones. These are the analog mobile phone standards that were introduced in the 80's and continued until being replaced by 2G digital mobile phones.
One such standard is NMT (Nordic Mobile Telephone), used in Nordic countries, Eastern Europe and Russia. Another is AMPS (Advanced Mobile Phone System) used in the United States.
2G
2G (or 2-G) is short for second-generation wireless telephone technology. It cannot normally transfer data, other than the digital voice call itself, and other basic ancillary data. Nevertheless, SMS messaging is also available as a form of data transmission for some standards.
2G technologies can be divided into TDMA-based and CDMA-based standards depending on the type of multiplexing used. The main 2G standards are:
GSM(TDMA-based), originally from Europe but used worldwide IDEN (TDMA-based), proprietary network used by Nextel in the United States and Telus Mobility in Canada IS-136 aka D-AMPS, (TDMA-based, commonly referred as simply TDMA in the US), used in the Americas IS-95 aka cdmaOne, (CDMA-based, commonly referred as simply CDMA in the US), used in the Americas and parts of Asia PDC (TDMA-based), used exclusively in Japan
2.5G services are already available in many countries and 3G will be widely available in many countries during 2004. Work on 4G has already started although its scope is not clear yet.
3G
3G (or 3-G) is short for third-generation mobile telephone technology. The services associated with 3G provide the ability to transfer both voice data (a telephone call) and non-voice data (downloading information, exchanging email, instant messaging,etc..).
3G Standards
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 camps.
