| IEEE 802．11网络分析模型 |
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| 引用本文： | 刘斌彬,王刚,梅顺良.IEEE 802．11网络分析模型[J].无线通信技术,2005,14(4):22-26,30. |
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| 作者姓名： | 刘斌彬 王刚 梅顺良 |
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| 作者单位： | 清华大学,微波与数字通信国家重点实验室,北京,100084 |
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| 摘 要： | IEEE 802.11在MAC层采用DCF作为主要的信道接入方式。本文分析了现有的几种802.11网络分析模型,其中B ianch i模型很好的描述了饱和状态下802.11 DCF的性能;X iao模型针对802.11e进行了多优先级的扩展,实现了EDCF的性能分析。最后介绍了一种新的分析模型,新模型同时考虑了业务优先级和内部调度算法,够较准确地描述网络性能。
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| 关 键 词： | 802.11 DCF EDCF 分析模型 |
| 文章编号： | 1003-8329(2005)04-0022-05 |
| 修稿时间： | 2005年7月6日 |
Analytical Model of IEEE 802.11 under Saturation Condition |
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| LIU Bin-bin,WANG Gang,MEI Shun-liang.Analytical Model of IEEE 802.11 under Saturation Condition[J].Wireless Communication Technology,2005,14(4):22-26,30. |
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| Authors: | LIU Bin-bin WANG Gang MEI Shun-liang |
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| Abstract: | The primary medium access control(MAC) technique of 802.11 is called distributed coordination function(DCF).This paper introduces several analytical models of IEEE 802.11 under saturation condition.Bianchi's model provided a good performance analysis of IEEE 802.11 DCF.Xiao improved Bianchi's model with priority scheme for IEEE 802.11e EDCF.Taking into account both the priority scheme and the internal scheduler when collision occurs inside the node,the new model is more accurate than other available models in the performance evaluation of network. |
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| Keywords: | 802 11 DCF EDCF Analytical Model |
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