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Directional Cooperative MAC Protocol Design and Performance Analysis for IEEE 802.11ad WLANs

机译:IEEE 802.11ad WLAN的定向合作MAC协议设计和性能分析

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摘要

In this paper, we consider the directional multigigabit (DMG) transmission problem in IEEE 802.11ad wireless local area networks (WLANs) and design a random-access-based medium access control (MAC) layer protocol incorporated with a directional antenna and cooperative communication techniques. A directional cooperative MAC protocol, namely, D-CoopMAC, is proposed to coordinate the uplink channel access among DMG stations (STAs) that operate in an IEEE 802.11ad WLAN. Using a 3-D Markov chain model with consideration of the directional hidden terminal problem, we develop a framework to analyze the performance of the D-CoopMAC protocol and derive a closed-form expression of saturated system throughput. Performance evaluations validate the accuracy of the theoretical analysis and show that the performance of D-CoopMAC varies with the number of DMG STAs or beam sectors. In addition, the D-CoopMAC protocol can significantly improve system performance, as compared with the traditional IEEE 802.11ad MAC protocol.
机译:在本文中,我们考虑了IEEE 802.11ad无线局域网(WLAN)中的定向多千兆位(DMG)传输问题,并设计了一种结合了定向天线和协作通信技术的基于随机访问的媒体访问控制(MAC)层协议。提出了一种定向协作MAC协议,即D-CoopMAC,以协调在IEEE 802.11ad WLAN中运行的DMG站(STA)之间的上行链路信道访问。考虑到方向性隐藏终端问题,使用3-D Markov链模型,我们开发了一个框架来分析D-CoopMAC协议的性能,并得出饱和系统吞吐量的闭式表达式。性能评估验证了理论分析的准确性,并表明D-CoopMAC的性能随DMG STA或波束扇区的数量而变化。此外,与传统的IEEE 802.11ad MAC协议相比,D-CoopMAC协议可以显着提高系统性能。

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