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QoS敏感的802.11e分组调度算法

QoS敏感的802.11e分组调度算法

谢鲲;龚闯;孙家奇;文吉刚

【期刊名称】《小型微型计算机系统》

【年(卷),期】2012(033)001

【摘要】分析并总结无线网络中基于QoS的分组调度算法,针对802.11e EDCA机制中多媒体数据分组调度的不公平问题,提出QoS敏感的802.11e数据分组调度算法.首先,根据不同数据业务延时敏感性需求,提出新的基于紧急度的数据分组调度指标.然后,在802.11e协议中根据业务流的紧急度,调整不同业务流所对应AC队列的参数,改变AC队列信道访问优先级,使紧急业务流有更多机会竞争到信道访问权.最后,进行大量仿真实验,实验结果验证了所提算法的有效性.%This paper summarizes and analyzes the existing packet scheduling algorithms in wireless networks. To counteract the unfair packet scheduling problem in 802. Lie EDCA, this paper proposes a QoS sensitive 802. Lie packet scheduling algorithm. First, based on the delay requirement of different multimedia flows, a new packet scheduling metric-flow urgency, is proposed. According to the urgency of different flows, the priority of wireless media access for different AC queues in 802. Lie is dynamically changed and the flow that has high urgency has more chance to access wireless channel. We have done extensive simulations. The simulation results demonstrate the effectiveness and efficiency of our proposed algorithm.

【总页数】6页(32-37)

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