| 一种基于优先级动态调整的802.11e MAC协议 |
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| 引用本文： | 李方军,曾晓丽,朱西平.一种基于优先级动态调整的802.11e MAC协议[J].成都信息工程学院学报,2014,29(3):244-249. |
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| 作者姓名： | 李方军 曾晓丽 朱西平 |
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| 作者单位： | 1. 吉首大学实验室与设备管理中心,湖南吉首,416000
2. 成都信息工程学院网络工程学院,四川成都,610225 |
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| 基金项目： | 教育部新世纪优秀人才支持计划资助项目，四川省科技支撑计划重点资助项目，四川省科技基础条件平台资助项目，感谢成都市科技计划项目(13Z130)对本文的资助 |
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| 摘 要： | 针对802.11eMAC协议不能良好地处理不同类型业务的节点间的公平性问题,提出一种基于优先级动态调整的802.11eMAC协议(P-MAC)。该协议网络中接入业务根据优先级设置权重系数,通过自适应调整业务权重系数,使不同业务均能公平地接入网络,从而保障业务的公平性问题。仿真结果表明:P-MAC协议相比于802.11eMAC协议,低业务数据流接入信道的机会增大了8%,与此同时,整个网络的平均吞吐量并未有所下降。
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| 关 键 词： | .e 优先级业务 MAC协议 马尔科夫链 吞吐量 |
A New MAC Protocol for 802.11e based on Adjustable Priority Mechanism |
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| LI Fang-jun,ZENG Xiao-li,ZHU Xi-ping.A New MAC Protocol for 802.11e based on Adjustable Priority Mechanism[J].Journal of Chengdu University of Information Technology,2014,29(3):244-249. |
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| Authors: | LI Fang-jun ZENG Xiao-li ZHU Xi-ping |
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| Institution: | LI Fang-jun,ZENG Xiao-li,ZHU Xi-ping(Laboratory and Equipment Management Center, Jishou University, Jishou, 416000, China;School of Network Engineering,Chengdu University of Information Technology, Chengdu 610225, China) |
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| Abstract: | The 802.11e MAC protocol can＇ t solve the fair access to channel between nodes with different services.For this problem,the paper proposed a new protocol for 802.11e MAC based on adjustable priority mechanism （PMAC）.The main idea is that the protocol sets the weight coefficients of the low priority to improve the faimess between the different services by optimization the corresponding weight coefficients.Simulation results show that the new protocol makes low priority get 8％ more chance to access channel than 802.11e MAC while the average throughput of the network is not reduced. |
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| Keywords: | 802 11e priority traffic MAC protocol markov chain throughput |
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