Performance Evaluation of Flow QoS Guarantee Method based on TCP Congestion Control and MAC Frame Priority Control over Multi-rate WLAN Environment
Performance Evaluation of Flow QoS Guarantee Method based on TCP Congestion Control and MAC Frame Priority Control over Multi-rate WLAN Environment
复制标题
多速率WLAN环境下基于TCP拥塞控制和MAC帧优先级控制的流QoS保证方法性能评估
DOI：
10.1109/candar.2014.97
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
and Kenji Ishida
中科院分区：
文献类型：
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作者：
Hikaru Tsushima;Ryo Hamamoto;Hiroyasu Obata;and Kenji Ishida
为了保证无线局域网（WLAN）中的流的带宽（流QoS），已经提出了使用用于QoS的TCP拥塞控制（QoS-TCP）和MAC帧优先级控制（QoS-MAC）两者的流QoS保证方法，我们将其称为跨层控制方法。该方法主要通过QoS TCP来保证流的带宽。MAC帧优先级控制辅助QoS TCP保证带宽。本文将TCP-AV和MAC帧中的接收机会控制（ROC）分别用作QoS TCP和QoS MAC。以前的研究评估了跨层控制方法在一个单一的速率环境。在这种环境中，每个终端在物理层中仅使用一种传输速率。然而，当前的无线设备通常使用多个传输速率。本研究将这种环境称为多速率环境。因此，跨层控制方法在多速率环境下的性能评估是不充分的。本文评估了跨层控制方法在多速率环境下的吞吐量性能。此外，本文表明，该方法可以保证目标带宽在多速率环境。仿真结果表明，该方法能够保证优先级流的目标带宽，提高多速率环境下的总吞吐量。
In order to guarantee the bandwidth of a flow (flow QoS) in Wireless LANs (WLANs), a flow QoS guarantee method using both TCP Congestion Control for QoS (QoS-TCP) and MAC Frame Priority Control (QoS-MAC), which we refer to as a cross layer control method, has been proposed. This method tries to guarantee the bandwidth of a flow mainly by using QoS-TCP. And MAC Frame Priority Control assists with QoS-TCP to guarantee the bandwidth. This paper uses TCP-AV and Receive Opportunity Control in MAC Frame (ROC) as QoS-TCP and QoS-MAC, respectively. The previous study evaluates the cross layer control method in a single rate environment. In this environment, each terminal uses only one transmission rate in the physical layer. However, current wireless devices usually use multiple transmission rates. This study calls this environment as a multi-rate environment. Thus, the performance evaluation of the cross layer control method over the multi-rate environment is insufficient. This paper evaluates the throughput performance of the cross layer control method in the multi-rate environments. Moreover, this paper shows that the method can assure the target bandwidth in the multi-rate environment. From simulation results, we found that the method can guarantee the target bandwidth for a priority flow and improve the total throughput in the multi-rate environment.