1.高度信息时代对移动通信的要求历来认为,通信的理想形式是在任何时间、任何地点,都可与任何人自由通话。电话发明并投入实用以来的一百余年,电话网的扩大和性能的提高,使固定的点对点(Station to station)通话已基本接近这一理想。计算机的迅速发展,产生了社会的高度信息化,这引起对计算机通信、图象通信需 1. The requirements for mobile communications in the highly information age Traditionally it has been thought that the ideal form of communication is to be able to talk freely to anyone, anytime, anywhere. More than a century after the phone was invented and put into practical use, the expansion of the telephone network and the improvement of its performance have made fixed Station to Station calls nearly as close as possible. The rapid development of computers has created a high degree of information society, which led to the computer communication, image communication needs