1、 摘摘 要要 GSM 数字移动通信系统是由欧洲主要运营商和制造厂家组成的标准化委员会提出来 的，是在蜂窝系统的基础上发展而成。自从开通 GSM 数字移动通信网以来，其业务已取 得飞速发展，网络规模也得到了很大扩展，2002 年我国 GSM 用户数突破 2 亿，中国移动 通信公司也成为世界上用户最多、网路规模最大的移动通信运营商。然而在网络建设，发 展业务的同时，提高网络质量，进行网络优化就成为日常维护工作的关键。GSM 网络在建 网及扩容时，普遍存在周期短，进度快的现象，因此或多或少会出现一些工程质量问题。 另外在运行过程中，受外部环境影响，各种设备也有不同程度的损耗。在对 GSM 基站系 统
2、进行方案设计时要考虑这些问题。 关键词：GSM 基站系统，BTS，BSC，模块，BBU，RRU Abstract GSM digital mobile communication system is brought by a standardization committee which composed of the major European operators and manufacturers, and the system is developed on the basis of the cellular systems. Since the opening of GSM digi
3、tal mobile communication network, the business has made a rapid development and the network scale also got great expansion in China., Our GSM subscribers exceeded 200 million in 2002 ，China Mobile Communications Corporation has the most users and the largest mobile network operator in the world. How
4、ever, network optimization has become the key to daily maintenance in network construction and development business in the improving of network quality. In the building of GSM network and network expansion, Phenomenon likes progress faster and short cycle appears, therefore some quality problems will appear more or less. Also a variety of devices have varying degrees of loss by the external environment in the running. These issues must be considered in the designing of the GSM base station syste
