Comparative analysis of TD-SCDMA technology independent and hybrid networking: independent networking is more in line with TD-SCDMA\'s own development interests than hybrid networking, but the backwardness of commercialization process and the disadvantage in industrial scale have made TD-SCDMA not dominant in the competition with the other two 3G standards, and hybrid networking is largely the product of temporary compromise of various standard camps under this reality. Only by accelerating the maturity of technology, expanding the scale of the industrial chain and actively preparing for the global market can TD-SCDMA gain more active choices in its own commercialization methods. TD-SCDMA proposed a technical proposal in 1998 and was recognized by ITU that year. In 2001, it was accepted by 3GPP as one of the international mainstream 3G technology standards, which is later than the starting point of WCDMA and CDMA2000 technology development. Taking WCDMA as an example, as early as 1991, DoCoMo started the research and development of WCDMA with its own R&D center as the core, which was an important condition for DoCoMo to be the first in the world to provide 3G services in 2001. At present, the R5 version of WCDMA has been frozen. HSDPA, an enhanced technology of WCDMA, is expected to be commercialized in Japan at the end of this year or early next year. In the CDMA2000 technology camp, CDMA2000 1X EV-DV, which currently has the highest speed, is expected to be commercialized by LGT, the third largest mobile operator in South Korea, in early 2006. Therefore, in terms of technology development and evolutionary capabilities, WCDMA and CDMA2000 are ahead of TD-SCDMA. Compared with the late start of technology development, TD-SCDMA\'s disadvantage in commercialization is more severe. From a global perspective, the 3G market dominated by WCDMA and CDMA2000 entered the preparation stage last year, and has been accelerating since this year. As of the end of September this year, there are more than 40 WCDMA networks in operation around the world, 23 of which provide mobile phone services, with more than 10 million mobile phone users; there are more than 20 CDMA2000 1X EV-DO networks in operation, 3 of which provide mobile phone services, with more than 9 million mobile phone users. As a state-owned 3G standard, TD-SCDMA needs to be first implemented in the domestic market for commercial use, and the repeated delays in issuing domestic 3G licenses have further widened the gap between TD-SCDMA and the other two 3G standards in terms of commercialization progress. The history of telecommunications technology evolution shows that the backwardness of commercialization progress will in turn affect the pace of technological evolution. Therefore, the current situation is very unfavorable for TD-SCDMA to achieve commercialization and then enter the global market. In general, whether from the pace of technological evolution or the current commercialization process, TD-SCDMA is at a disadvantage compared with WCDMA and CDMA2000. At present, the domestic industry has a large difference in the prospects of various TD-SCDMA networking methods. In addition to the independent networking solution that the TD-SCDMA camp focuses on, based on the technical premise that TD-SCDMA can share the core network with WCDMA (R99 and R4 versions), the industry has also proposed a hybrid networking solution for TD-SCDMA and WCDMA. In response to these views, this article will discuss the characteristics of various TD-SCDMA networking methods in China based on the current development status of TD-SCDMA and combined with global 3G commercial practices.
You Might Like
Recommended ContentMore
Open source project More
Popular Components
Searched by Users
Just Take a LookMore
Trending Downloads
Trending ArticlesMore