On April 1 2008, China Mobile Communications Group Co., Ltd. launched the third generation mobile communication (3G) "China standard" TD-SCDMA social service test and commercial trial in eight cities including Beijing, Shanghai, Tianjin, Shenyang, Guangzhou, Shenzhen, Xiamen and Qinhuangdao.
3G network technology, compared with the first generation mobile communication technology (1G) and the second generation digital mobile phone communication technology (2G), 3G mobile phone mainly combines wireless communication and Internet communication technology to form a brand-new mobile communication system.
This mobile technology can handle images, music and other media forms, in addition, it also includes some business functions, such as conference call. In order to support the above functions, the wireless network can fully support different data transmission speeds, that is, at least 2Mbps, 384kbps and 144kbps can be provided in outdoor, indoor and driving environments.
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The Origin of 3G Technology
1940, American actress hedy lamarr and her composer husband George Antell put forward the technical theory of "spread spectrum technology" (also called code division spread spectrum technology), which eventually evolved into 3G technology.
1985, Qualcomm developed a new technology called "CDMA" by using the "spread spectrum technology" released by the US military, which directly led to the birth of 3G.
In May 2008, the International Telecommunication Union officially announced the third generation mobile communication standard, and TD-SCDMA submitted by China officially became an international standard. Together with WCDMA in Europe and CDMA2000 in the United States, it became one of the three most mainstream technologies in the 3G era.
Baidu Encyclopedia -3G Network