截至2005年年底,我国PHS网络已经拥有近9000万的用户,虽然目前PHS形式严峻,但其用户也有5000多万,网络投资巨大,无线网络覆盖已达到一定的水平;经历了多次大的话务量的冲击,网络健壮性得到了考验。随着固定电话业务的萎缩,3G网络的建设是固网通信运营商持续发展的关键。3G网络的建设需要一定的时间,建成后还需要长时间的优化,所以在一定时期内,3G As of the end of 2005, China’s PHS network already has nearly 90 million subscribers. Although the current PHS form is grim, its subscribers have more than 50 million. The network investment is huge and the coverage of wireless networks has reached a certain level. After going through many big words The impact of volume, network robustness has been tested. With the shrinking of fixed-line business, the construction of 3G network is the key to the continuous development of fixed-line communications operators. 3G network construction takes some time, after the completion of the need for a long time to optimize, so in a certain period of time, 3G