3G is the 3rd generation of telecommunication hardware stands. standards and general technology for mobile networking, superseding 2.5G. It is based on the International Telecommunication Union (ITU) family of standards under the IMT-2000. 3G networks enable network operators to offer users a wider range of more advanced services while achieving greater network capacity through improved spectral efficiency. Services include wide-area wireless voice telephony, video calls, and broadband wireless data, all in a mobile environment. Additional features also include HSPA data transmission capabilities able to deliver speeds up to 14.4 Mbit/s on the downlink and 5.8 Mbit/s on the uplink.
Implementation of 3G World
The first commercial launch of 3G was by NTT DoCoMo in Japan on October 1, 2001. The 2nd network to go commercially live was by SK Telecom in South Korea on the 1xEV-DO technology in January 2002.
In Europe, the first commercial network was provided by Telenor in December 2001 on the W-CDMA technology and in USA, 3G network was first provided by Monet Mobile Networks, on CDMA2000 1x EV-DO technology, but this network provider later shut down its operation. The 2nd 3G network operator in the USA was Verizon Wireless in October 2003.
According to the latest data, about 190 3G networks were operating in 40 countries and 154 HSDPA networks were operating in 71 countries. In Asia, Europe, Canada and the USA, telecommunication companies use W-CDMA technology with the support of around 100 terminal designs to operate 3G mobile networks.
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