在易出错的802.11e WLAN中用控制理论方法实现比例公平性
Achieving proportional fairness with a control theoretic approach in error-prone 802.11e WLANs
摘要：
这封信提出了一种控制理论的方法，以实现在易出错的EDCA WLAN中的接入类别（AC）之间的比例公平性，提供不同的QoS要求和优先级参数。该方法自适应地调整每个AC的最小竞争窗口，以获得其最佳的站点尝试概率，从而导致成比例的公平分配的站点吞吐量。仿真结果表明，该控制方法具有较高的精度性能和收敛速度快的一般网络场景。
英文摘要：
This letter proposes a control theoretic approach to achieve proportional fairness amongst access categories (ACs) in an error-prone EDCA WLAN for provision of distinct QoS requirements and priority parameters. The approach adaptively adjusts the minimum contention window of each AC to derive the station attempt probability to its optimum which leads to a proportional fair allocation of station throughputs. Evaluation results demonstrate that the proposed control approach has high accuracy performance and fast convergence speed for general network scenarios.
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