| 自适应调度的增强QoS保证机制 |
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| 引用本文： | 殷爱菡,钱飞鹏,焦曰里.自适应调度的增强QoS保证机制[J].计算机工程与设计,2010,31(3). |
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| 作者姓名： | 殷爱菡 钱飞鹏 焦曰里 |
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| 作者单位： | 华东交通大学,信息工程学院,江西,南昌,330013 |
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| 基金项目： | 江西省教育厅科技基金项目，江西省研究生创新基金项目，华东交通大学基金项目 |
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| 摘 要： | 针对IEEE802.11的媒体接入控制层QoS支持技术进行了研究.基于无线局域网MAC层DCF和EDCF两种退避机制,提出了一种增强型自适应慢速递减的EASDCF方案,并在此基础上的结合IEEE802.11e的业务分级的思想,通过最大竞争窗口和重传次数的不同来区分不同的优先级,并对每个优先级进行区分服务.仿真结果表明,EASDCF机制所采用的分级策略提高了时延敏感业务的吞吐量,并使丢包率敏感的数据业务得到可靠保障,该算法能够有效地增强网络的QoS,提高整个网络的性能.
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| 关 键 词： | 最大竞争窗口 重传次数 吞吐量 丢包率 退避机制 |
Adaptive scheduling mechanism to enhance QoS guarantee |
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| YIN Ai-han,QIAN Fei-peng,JIAO Yue-li.Adaptive scheduling mechanism to enhance QoS guarantee[J].Computer Engineering and Design,2010,31(3). |
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| Authors: | YIN Ai-han QIAN Fei-peng JIAO Yue-li |
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| Affiliation: | YIN Ai-han,QIAN Fei-peng,JIAO Yue-li (School of Information Engineering,East China Jiaotong University,Nanchang 330013,China) |
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| Abstract: | IEEE802.11 media access control layer QoS support technology is researched.Based on wireless local area network MAC layer two kind of backoff mechanism DCF and EDCF,an enhanced adaptive slow decrease EASDCF scheme is proposed,and based on this union the idea of service classification of IEEE802.11e,through the different of largest contention window and retry limit different priorities is distinguished,and different services is provided for each priority.Simulation results show the classification strategy ad... |
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| Keywords: | largest contention window retry limit throughput packet drop rate backoffmechanism |
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