IEEE802.11无线局域网络性能分析

Performance Analysis of IEEE802.11 under Distribution Coordination Function

无线局域网是目前无线通信领域中的主要通信网络之一 ,如何有效的分析IEEE80 2 .1 1无线局域网中的饱和吞吐率和接入时延一直是无线局域网中的研究重点 .本文引入了一种新型的分析模型 ,分析了IEEE80 2 .1 1DCF协议下AdHoc网络的饱和吞吐量 ,该模型不仅简单而且准确 ,有效地降低了分析方法的复杂度 ;同时本文还建立了一种有效的模型 ,分析了IEEE80 2 .1 1DCF协议下AdHoc网络的接入时延 .仿真结果表明所有的分析结果和仿真结果都很吻合 ,这说明了我们的分析模型是可行的 .

Wireless LANs have achieved a tremendous amount of growth in recent years.The IEEE has standardized the 802.11 protocol for Wireless LAN.The performance of the Medium Access Control has been examined over the past years and several models had been provided.In this paper,a simple but accurate analytical model is presented to compute the saturation throughput and access delay of 802.11 DCF.Compared with other models,this model is able to predict the behaviors of 802.11 more simply and accurately.