| The Impact of RTS Threshold on Capacity of IEEE 802.11 DCF |
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| 引用本文： | 严少虎,卓永宁,吴诗其,郭伟. The Impact of RTS Threshold on Capacity of IEEE 802.11 DCF[J]. 中国电子科技, 2004, 2(4) |
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| 作者姓名： | 严少虎 卓永宁 吴诗其 郭伟 |
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| 作者单位： | School of Communication and Information Engineering，UESTC Chengdu 610054 China，School of Communication and Information Engineering，UESTC Chengdu 610054 China，School of Communication and Information Engineering，UESTC Chengdu 610054 China，School of Communication and Information Engineering，UESTC Chengdu 610054 China |
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| 基金项目： | Supported by the Foundation of National 863 Programme of China (No.2001AA120303 ) |
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| 摘 要： | Distributed coordination function (DCF) is the fundamental medium access control (MAC) mechanism in IEEE 802.11[1]. There are essentially two MAC techniques in DCF: a basic access method that uses two-way handshaking (DATA-ACK) and a RTS/CTS variant that uses Request-To-Send and Clear-To-Send messages in a four-way handshake (RTS-CTS-DATA-ACK). In a hybrid system, there is a preconfigured RTS threshold. Packet with payload longer than this threshold is transmitted in RTS/…
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The Impact of RTS Threshold on Capacity of IEEE 802.11 DCF |
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| YAN Shao-hu,Zhuo Yong-ning,WU Shi-qi,GUO Wei. The Impact of RTS Threshold on Capacity of IEEE 802.11 DCF[J]. Journal of Electronic Science Technology of China, 2004, 2(4) |
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| Authors: | YAN Shao-hu Zhuo Yong-ning WU Shi-qi GUO Wei |
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| Abstract: | Based on delicate mathematical model, the average time in a successful and unsuccessful transmission is worked out. Then the relation between network saturation throughput and RTS threshold is found and expressed in a theoretical formula. Our analysis shows that there is an optimum RTS threshold that can maximize the network capacity. The numerical techniques to find out the optimum RTS threshold are also presented. All these analysis are well validated by computer simulation. |
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| Keywords: | IEEE 802.11 network capacity RTS threshold DCF |
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