Time Division-Synchronous Code Division Multiple Access, or TD-SCDMA, is a 3G mobile telecommunications standard, going to be implemented in Republic of China by the Chinese Academy of Telecommunications Technology (CATT), Datang and Siemens AG.

TD-SCDMA is China’s home-developed 3G standard. The government has strongly backed the standard in an attempt to reduce China’s reliance on expensive foreign technology. There were bugs initially in the TD-SCDMA 3G standard. Those bugs were ironed out by the experts. So China going to implement their 3G standard and the major cell phone producers already announced their products which will be supporting this 3G standard.

According to research firm "Analysys International", The market for TD-SCDMA equipment reached $910m in the first quarter of 2007. The whole amount is spent over the infrastructure developement now.

But the 3G handsets are not available yet in China.

Local firms such as ZTE and Datang are guiding TD-SCDMA sales with 46.3 per cent and 26.8 per cent of the market respectively.

Huawei,China’s largest mobile manufacturer and Nokia and Siemens, Europe made a joint venture called TD-Tech which holds a market of 14.8 percent in TD-SCDMA 3G standard.

World’s largest mobile carrier, China Mobile, which recently given out TD-SCDMA infrastructure contracts for six major cities, including Beijing and Tianjin, which both have populations over 10 million.

Trial networks based on the foreign W-CDMA and CDMA2000 3G standards were established last year, and are still awaiting government approval to start public operation.

Nokia alrady announced a research facility in Tsinghua University ,Beijing to catalyse the implimentation of the new 3G standard.