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Starvation avoidance-based dynamic multichannel access for low priority traffics in 802.11ac communication systems
Computers & Electrical Engineering ( IF 4.3 ) Pub Date : 2020-12-29 , DOI: 10.1016/j.compeleceng.2020.106942
Souhila Mammeri , Mohand Yazid , Rahim Kacimi , Louiza Bouallouche-Medjkoune

Using optimally wide channels in 802.11ac networks has been the topic of various research work. Nevertheless, the efficiency of both Static and Dynamic Multichannel Access methods (SMA and DMA) is a challenging issue, since they employ the Enhanced Distributed Channel Access (EDCA) to provide the Quality of Service (QoS). Indeed, EDCA enables QoS through service differentiation between priority (Voice and Video) and non-priority (Besteffort and Background) traffics. Consequently, the concept of priority may severely starve non-priority traffics from channel access, and lead to an unfair bandwidth allocation. In this paper, we highlight the starvation issue of non-priority traffics in 802.11ac networks. Thereby, we propose a Starvation avoidance DMA (SDMA) method by means of 80 and 160 MHz channel bonding. The individual throughput is measured for comparing SDMA and DMA methods. The obtained results show a significant improvement in throughput of non-priority traffics, while maintaining the throughput level of priority traffics.



中文翻译:

基于饥饿避免的动态多通道访问,用于802.11ac通信系统中的低优先级流量

在802.11ac网络中使用最佳宽信道一直是各种研究工作的主题。但是,静态和动态多通道访问方法(SMA和DMA)的效率都是一个具有挑战性的问题,因为它们采用增强的分布式通道访问(EDCA)来提供服务质量(QoS)。实际上,EDCA通过区分优先级(语音和视频)和非优先级(Besteffort和背景)流量之间的服务来实现QoS。因此,优先级的概念可能严重地使非优先级的流量无法访问信道,并导致带宽分配不公平。在本文中,我们重点介绍了802.11ac网络中非优先流量的饥饿问题。因此,我们通过80和160 MHz信道绑定提出了一种避免饥饿DMA(SDMA)方法。测量单独的吞吐量以比较SDMA和DMA方法。所获得的结果表明,在保持优先流量的吞吐量水平的同时,非优先流量的吞吐量有了显着提高。

更新日期:2020-12-29
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