集群发展宗旨：以调度为主，电话为辅80年代末，世界各国纷纷利用集群技术的优势，普遍发展集群移动通信事业。在这种潮流的影响下，联通国脉通信公司（当时为上海邮电开发公司）抓住机遇，经过大量的市场调研和技术分析，于1990年5月率先引进了美国摩托罗拉公司的SmartNet模拟 Cluster development purposes: the main scheduling, telephone supplemented by the late 1980s, the countries of the world have used the advantages of cluster technology, universal development of cluster mobile communications. Under the influence of this trend, China Unicom Guomai Communications Company (then Shanghai Posts and Telecommunications Development Corporation) seized the opportunity, after a large number of market research and technical analysis, in May 1990 the first to introduce the United States Motorola’s SmartNet simulation