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近年来,随着个人数据通信的发展,功能强大的便携式数据终端以及多媒体终端得到了广泛的应用。为了实现使用户能够在任何时间、任何地点均能实现数据通信的目标,要求传统的计算机网络由有线向无线、由固定向移动、由单一业务向多媒体业务演进,由此无线网络技术得到了快速的发展。在互联网应用快速普及的今天,无线网络技术已成为通信发展的重要新兴领域。无线技术使得人们使用品种广泛的设备在世界任何位置访问数据的愿望成为可能。
In recent years, with the development of personal data communications, powerful portable data terminals and multimedia terminals have been widely used. In order to achieve the goal of enabling users to communicate data anytime, anywhere, it is required that traditional computer networks evolve from wired to wireless, fixed-to-mobile, and from single-service to multimedia services, whereby the wireless network technology is rapidly development of. In today’s rapid spread of Internet applications, wireless network technology has become an important emerging field of communications. The promise of wireless technology makes it possible for people to access data anywhere in the world using a wide variety of devices.