| 基于加权丢帧率的可调门限速率自适应算法 |
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| 引用本文： | 孙沛,孔繁庭.基于加权丢帧率的可调门限速率自适应算法[J].计算机工程,2009,35(7):116-118. |
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| 作者姓名： | 孙沛 孔繁庭 |
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| 作者单位： | 兰州大学信息科学与工程学院,兰州,730000 |
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| 摘 要： | 为了在IEEE 802．11无线网络中根据信道的动态变化恰当地选择传输速率，提出基于加权丢帧率的可调门限速率自适应算法。该机制加权计算丢帧率，自适应调整门限，能克服随机丢帧造成的误判，避免速率频繁波动，使速率选择更准确。仿真结果表明，该机制在Rayleigh信道和Ricean信道中均表现稳定，与其他速率自适应算法相比，吞吐量较优。
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| 关 键 词： | 速率自适应 IEEE 802.11标准 门限 |
| 修稿时间： | |
Adaptive Threshold Rate Adaptation Algorithm Based on Weighted Frame-loss-ratio |
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| SUN Pei,KONG Fan-ting.Adaptive Threshold Rate Adaptation Algorithm Based on Weighted Frame-loss-ratio[J].Computer Engineering,2009,35(7):116-118. |
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| Authors: | SUN Pei KONG Fan-ting |
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| Affiliation: | School of Information Science & Engineering;Lanzhou University;Lanzhou 730000 |
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| Abstract: | To select the best transmission rate based on dynamic channel quality in IEEE 802.11 wireless networks, this paper presents weighted frame-loss-ratio based adaptive threshold rate adaptation algorithm.It calculates weighted frame loss ratio and decides upscaling and downscaling thresholds.The mechanism avoids wrong choice because of random frame loss and rate fluctuation.Simulation results show that it is robust for Rayleigh and Ricean channel, the throughput is better than other rate adaptation solutions. |
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| Keywords: | IEEE |
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