基于OPNET的IEEE802．11信道接入技术仿真研究

信道接入控制技术是实现无线网络节点共享无线信道空间的关键技术。IEEE802．11作为无线局域网的一个重要协议标准，定义了两种信道接入控制方式，分别是分布式协调方式和中心协调方式。本文主要研究了以IEEE802．11协议标准为对象的无线局域网两种信道接入技术的学习和讨论，并运用先进的网络仿真工具OPNET对信道接入技术进行了仿真研究，总结了不同信道接入技术下的无线局域网的网络性能。指出设计网络时需要根据不同情况来选用不同的方式来进行通信。

To simulate channel access technology of IEEE802.11 based on OPNET

Channel access control technology is a wireless network node sharing space key technology of wireless channel. As wireless LAN IEEES02.11, an important agreement standard defines two channel access control mode, which is DCF and PCF This paper mainly studies the standards for the agreement with the object of IEEES02.11 wireless LAN two charmel access technology, and the study and discuss with advanced network simulation tools to channel access technology OPNET simulation research, summarizes different channel access technology of wireless LAN network performance. When designing network that need to choose according to different situations in different ways to communicate.