| Performance Improvement of Distributed Coordination Function in IEEE 802.11 Wireless LAN |
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| 作者姓名： | 舒炎泰 董林芳 汪广洪 张亮 |
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| 作者单位： | School of Computer Science and Technology Tianjin University Tianjin 300072 China，School of Computer Science and Technology Tianjin University Tianjin 300072 China，Beijing Aerospace Control Centre Beijing 100094 China，School of Computer Science and Technology Tianjin University Tianjin 300072 China |
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| 基金项目： | Supported by National Natural Science Foundation of China (No. 60472078 and No. 90604013). |
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| 摘 要： | This paper proposes a modification to distributed coordination function (DCF) to improve the channel utilization in IEEE 802.11 wireless local area networks (WLANs). In the modified DCF, when a station has contended for the channel, it may transmit multiple data frames continuously to the same destination, which is called transmission burst(TB). When the maximum number of data packets transmitted continuously in a TB is set to be 2, the performance is expected to be the best. The theoretical analysis and simulation results show that compared with the standard DCF, the modified DCF can increase the throughput and decrease the delay of the WLAN, and the modification does not introduce any additional control overhead.
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| 关 键 词： | IEEE 802. 11 无线局部网 分布式 性能改进 |
| 收稿时间： | 2006-02-23 |
Performance Improvement of Distributed Coordination Function in IEEE 802.11 Wireless LAN |
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| SHU Yantai,DONG Linfang,WANG Guanghong,ZHANG Liang.Performance Improvement of Distributed Coordination Function in IEEE 802.11 Wireless LAN[J].Transactions of Tianjin University,2006,12(4):286-290. |
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| Authors: | SHU Yantai DONG Linfang WANG Guanghong ZHANG Liang |
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| Abstract: | This paper proposes a modification to distributed coordination function (DCF) to improve the channel utilization in IEEE 802.11 wireless local area networks (WLANs). In the modified DCF, when a station has contended for the channel, it may transmit multiple data frames continuously to the same destination, which is called transmission burst(TB). When the maximum number of data packets transmitted continuously in a TB is set to be 2, the performance is expected to be the best. The theoretical analysis and simulation results show that compared with the standard DCF, the modified DCF can increase the throughput and decrease the delay of the WLAN, and the modification does not introduce any additional control overhead. |
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| Keywords: | IEEE 802 11 wireless LAN distributed coordination function |
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