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随着Internet的迅速普及和多媒体技术的飞速发展,用户对网络带宽的要求日益增加。目前各国的核心网络建设均已初具规模,以光缆为主体的骨干网基本可满足当前通信的需求,而主要矛盾体现在“最后一公里”问题,即从客户网到核心网之间的接入瓶颈。宽带无线接入,已成为解决这一问题的有效方法和研究热点。IEEE802.16正是为实现这一应用而定制的最新协议。该协议为宽带无线接入(BWA)系统提供了统一的空中接口标准。实践证明,在众多解决方案中,宽带无线接入在初期投资量、部署速度、资源重复利用等方面与其他技术相比有着巨大优势和更广的市场前景,特别受到新兴电信运营商的重视。
With the rapid popularization of Internet and the rapid development of multimedia technology, users’ demands for network bandwidth are increasing day by day. At present, the core network construction in all countries has begun to take shape. The backbone network with optical fiber as the main line can basically meet the current communication needs. The main contradiction is reflected in the problem of “the last mile”, that is, the connection from the customer network to the core network Into the bottleneck. Broadband wireless access has become an effective method and research hotspot to solve this problem. IEEE802.16 is the latest protocol tailored to this application. The protocol provides a unified air interface standard for Broadband Wireless Access (BWA) systems. Practice has proved that in many solutions, broadband wireless access has huge advantages and broader market prospects compared with other technologies in terms of initial investment, deployment speed, resource reuse, etc., and is particularly valued by emerging telecom operators.