| IEEE802.11a WLAN中DCF性能分析 |
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| 引用本文： | 陈羽中,杨丙卿,开彩红,刘政凯.IEEE802.11a WLAN中DCF性能分析[J].应用科学学报,2006,24(2):165-170. |
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| 作者姓名： | 陈羽中 杨丙卿 开彩红 刘政凯 |
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| 作者单位： | 中国科学技术大学,信息处理中心,安徽,合肥,230026 |
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| 基金项目： | 中国科学院知识创新工程项目;国家科技攻关项目 |
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| 摘 要： | 引入二维马尔科夫模型,对DCF的两种传输方式:基本接入方式和RTS/CTS方式,在IEEE802.11a WLAN中的饱和吞吐量和传输时延性能进行了理论分析和仿真,理论分析和仿真结果表明,与低速IEEE802.11WLAN中的情况相反,在IEEE802.11a WLAN中,基本接入方式在多数情况下比RTS/CTS方式更有效.
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| 关 键 词： | IEEE802.11a DCF 饱和吞吐量 传输时延 |
| 文章编号： | 0255-8297（2006）02-0165-06 |
| 收稿时间： | 2005-01-05 |
| 修稿时间： | 2005-01-052005-03-14 |
Saturation Throughput and Delay Analysis of DCF in IEEE 802. 11a WLAN |
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| CHEN Yu-zhong,YANG Bing-qing,KAI Cai-hong,LIU Zheng-kai.Saturation Throughput and Delay Analysis of DCF in IEEE 802. 11a WLAN[J].Journal of Applied Sciences,2006,24(2):165-170. |
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| Authors: | CHEN Yu-zhong YANG Bing-qing KAI Cai-hong LIU Zheng-kai |
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| Institution: | Information Processing Center, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | IEEE 802.11a is a popular high-speed WLAN standard with a data rate up to 54 Mps.The basic Medium Access Control(MAC) protocol of IEEE 802.11a is the contention-based distributed coordination function.DCF includes two access mechanisms: basic access mechanism and RTS/CTS access mechanism.In this paper,an analysis and comparison of saturation throughput and access delay of these two access mechanisms in IEEE 802.11a WLAN is conducted by introducing a two-dimensional Markov model.The study reveals that,in contradiction to the situation in IEEE 802.11 WLAN,basic access mechanism is always more effective than RTS/CTS mechanism in high-speed IEEE 802.11a WLAN. |
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| Keywords: | IEEE802 11a DCF saturation throughput access delay |
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