毕业论文无线局域网性能分析及仿真(基于rtsctsdcf)

2 无线局域网 802.11 MAC 层 ................................................................................4
2.1 IEEE 802.11 MAC 协议概述 ...........................................................................4 2.2 IEEE 802.11 MAC 中的主要技术 ...................................................................4
2.2.1 虚拟载波监听技术 ...................................................................................4 2.2.2 帧优先级的设置 .......................................................................................5 2.2.3 随机退避机制 ...........................................................................................5 2.2.4 节能管理 ...................................................................................................5 2.3 IEEE 802.11 MAC 的网络工作方式 ...............................................................6 2.3.1 DCF 接入方式............................................................................................6 2.3.2 PCF 接入方式 ............................................................................................8 2.4 二进制指数退避算法的不公平现象 ..............................................................8 2.5 两种工作方式的对比和局限性......................................................................9 2.6 结论................................................................................................................10
3 IEEE 802.11 MAC 层性能分析...........................................................................11
3.1 MAC 协议的性能指标 ..................................................................................11 3.1.1 吞吐量(S)..................................................................................................11
毕业设计
目
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1 绪论..............................................................................................................来自百度文库.........1
1.1 无线局域网的概述 ..........................................................................................1 1.2 无线局域网的发展及研究现状......................................................................1 1.3 本论文的章节安排..........................................................................................3
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无线局域网性能分析及仿真
3.1.2 总业务量(G).............................................................................................11 3.1.3 帧平均传输时延(D)................................................................................11 3.1.4 饱和吞吐量 ..............................................................................................12 3.2 RTS/CTS-DCF 协议性能分析.......................................................................12 3.2.1 RTS/CTS-DCF 机制原理.........................................................................12 3.2.2 基本模型 ..................................................................................................15 3.2.3 RTS/CTS 接入方式..................................................................................15 3.3 RTS/CTS-DCF 存在的问题...........................................................................17 3.4 RTS/CTS-DCF 的改进算法思想...................................................................17 4 RTS/CTS-DCF 机制的仿真.................................................................................19 4.1 网络仿真软件 ................................................................................................19 4.2 RTS/CTS 机制的仿真 ....................................................................................20 4.2.1 仿真思路 .................................................................................................20 4.2.2 仿真模块介绍 .........................................................................................20 4.3 仿真结果与分析............................................................................................23 总结..........................................................................................................................25 谢辞..........................................................................................................................26 参考文献 .................................................................................................................27 附录..........................................................................................................................28 附录 A 外文翻译-原文部分................................................................................28 附录 B 外文翻译-译文部分................................................................................32