Resource and Energy-Efficient Configuration of IEEE 802.11ah Networks under Rayleigh Channels

Hamid Taramit, L. Orozco-Barbosa, A. Haqiq
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引用次数: 2

Abstract

The Restricted Access Window (RAW) mechanism included in the IEEE 802.11ah standard is one of the promising solutions to meet the requirements of Internet of Things (IoT) applications. It splits channel time into RAW slots and limits channel access to only a group of stations at a time. In this paper, we consider an IEEE 802.11ah network operating under Rayleigh fading channel with capture effect, and we develop efficient schemes to optimize the gain of the RAW mechanism. We propose an algorithm to identify the best cases for the RAW slot duration. Then, we deploy this result to develop a resource-efficient scheme to reconfigure a RAW consisting of several RAW slots. The new configuration eliminates the extra time wasted during the RAW period, resulting in higher throughput and energy efficiency. We present numerical results and simulations to validate our findings and analyze the impact of several parameters. The proposed RAW reconfiguration scheme significantly increases RAW performance by up to 21% for throughput and up to 8% for energy efficiency. It further optimizes the channel allocation resources, providing a channel gain ratio of up to 19%.
Rayleigh信道下IEEE 802.11ah网络的资源与节能配置
IEEE 802.11ah标准中包含的限制访问窗口(RAW)机制是满足物联网(IoT)应用需求的有前途的解决方案之一。它将频道时间划分为RAW时隙,并限制频道一次只能访问一组电台。在本文中,我们考虑了一个工作在瑞利衰落信道下的IEEE 802.11ah网络,并开发了有效的方案来优化RAW机制的增益。我们提出了一种算法来确定RAW插槽持续时间的最佳情况。然后,我们部署这个结果来开发一个资源高效的方案来重新配置由几个RAW插槽组成的RAW。新的配置消除了在RAW期间浪费的额外时间,从而提高了吞吐量和能源效率。我们给出了数值结果和模拟来验证我们的发现,并分析了几个参数的影响。提议的RAW重构方案显著提高了RAW性能,吞吐量提高了21%,能源效率提高了8%。进一步优化了信道分配资源,信道增益比高达19%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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