论文部分内容阅读
中国移动通信网是90年代增长最快的市场,到1997年底,全国的无线电话用户已超过1300万,全世界排行第三,到1998年底移动用户已达2498万,世界排名第二,预计到2002年,将达到4千万用户,世界第一。 目前中国使用的大多是GSM系统,是合乎逻辑的选择,但是它也提出了挑战。 挑战 传统的GSM系统是为居民密集的大城市设计的,如北京、上海等,目的在于发挥最大作用。农村地区人口密度很小,地方很
China Mobile Network was the fastest-growing market in the 1990s. By the end of 1997, the number of wireless telephone users in the country had surpassed 13 million and ranked the third in the world. By the end of 1998, the number of mobile subscribers had reached 24.98 million, ranking second in the world. It is estimated that In 2002, it will reach 40 million users in the world. At present, most of the GSM systems used in China are a logical choice, but it also poses challenges. Challenges The traditional GSM system is designed for large, densely populated cities such as Beijing and Shanghai with the aim of maximizing its impact. Rural population density is very small, very local