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背景今年3月28日,为外界关注已久的CDMA1X以及基于CDMA1X网络的移动数据业务品牌“联通无限“正式宣告诞生。在联通的眼中,”联通无限”承载着赶超移动的希望,而联通总裁王建宙说得更是意味深长——“一切即将改变”。 CDMA升级建设始于2002年下半年的CDMA二期工程,CDMA二期工程在将网络扩容至3500万的同时,将CDMA现行IS95A标准的一期网络平滑地升级至CDMA1X网络。由于CDMA1X和移动GPRS为CDMA和GSM往3G发展的过渡技术,因此人们习惯将这两种技术称为2.5G。相对于CDMAIS95A的
Background March 28 this year, for the outside world has long been the CDMA1X and CDMA1X network-based mobile data business brand “Unicom Infinity” was officially announced the birth. In the eyes of China Unicom, “Unicom unlimited” carries the hope of catching up with mobile, and Wang Jianzhou, president of Unicom, is even more meaningful - “Everything is about to change.” CDMA upgrade construction began in the second half of 2002, CDMA Phase II project, CDMA Phase II expansion of the network to 35 million at the same time, the CDMA IS95A standard of the first phase of a smooth network upgrade to CDMA1X network. Since CDMA1X and mobile GPRS are the transitional technologies for the development of CDMA and GSM to 3G, people are accustomed to calling these two technologies 2.5G. Relative to CDMAIS95A