无线局域网是９０年代计算机网络与无线通信技术相结合的产物，它提供了使用无线多址信道的一种有效方法来支持计算机之间的通信，并为通信的移动化、个人化和多媒体应用提供了潜在的手段。本文对无线局域网的概念和目前的技术发展进行了介绍，并详细分析了网络的结构、协议及其它相关问题。 Wireless LANs, a combination of computer networks and wireless communications technologies of the 1990s, provide an efficient way to use wireless multiple access channels to support communications between computers and to provide for the mobilization of communications, personalization, and multimedia applications Potential means. This paper introduces the concept of wireless LAN and the current technology development, and analyzes in detail the network structure, protocols and other related issues.