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A novel scheduler for VBR traffic in IEEE 802.11 HCCA WLANs

机译:IEEE 802.11 HCCA WLAN中用于VBR流量的新型调度程序

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摘要

IEEE 802.11 standard provides a reference scheduler with admission control, which is suitable for CBR traffic because the allocation of Transmission Opportunity (TXOP) duration is only based on the mean data rate. This paper proposes a novel scheduler for Variable Bit Rate (VBR) traffic, where the polling list and TXOP values are dynamically updated according to the current backlog and the measured loss rate of each flow. Moreover, an effective admission method is also provided as well to guarantee the loss rate. According to our simulation results, the number of admitted flows in the proposed scheduler is close to that in the reference scheduler and the loss rate can be well controlled below the threshold.
机译:IEEE 802.11标准为引用调度器提供了允许控制,该调度器适合CBR通信,因为传输机会(TXOP)持续时间的分配仅基于平均数据速率。本文提出了一种新颖的可变比特率(VBR)流量调度器,其中,轮询列表和TXOP值根据当前的积压情况和所测量的每个流的丢失率动态更新。此外,还提供了一种有效的准入方法以保证损失率。根据我们的仿真结果,建议的调度器中允许的流数接近于参考调度器中的流,并且损失率可以很好地控制在阈值以下。

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