A Power Saving MAC Protocol by Increasing Spatial Reuse for IEEE 802.11 Ad Hoc WLANs

doi:10.1109/AINA.2005.47

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Title:	A Power Saving MAC Protocol by Increasing Spatial Reuse for IEEE 802.11 Ad Hoc WLANs
Authors:	Shih, Kuei-ping;Chang, Chih-yung;Chou, Chien-min;Chen, Szu-min
Contributors:	淡江大學資訊工程學系;淡江大學資訊創新與科技學系
Date:	2005-03
Issue Date:	2010-04-15 09:51:20 (UTC+8)
Publisher:	Los Alamitos, California：Institute of Electrical and Electronics Engineers (IEEE)
Abstract:	Scarce resources of wireless medium (e.g., bandwidth, battery power, and so on) significantly restrict the progress of wireless local area networks (WLANs). Heavy traffic load and high station density are most likely to incur collisions, and further consume bandwidth and energy. In this paper, a distributed power-saving protocol, power-efficient MAC protocol (PEM), to avoid collisions and to save energy is proposed. PEM takes advantage of power control technique to reduce the interferences among transmission pairs and increase the spatial reuse of WLANs. Based on the concept of maximum independent set (MIS), a novel heuristic scheme with the aid of interference relationship is proposed to provide as many simultaneous transmission pairs as possible. In PEM, all stations know when to wake up and when they can enter doze state. Thus, stations need not waste power to idle listen and can save much power. The network bandwidth can be efficiently utilized as well. To verify the performance of PEM, a lot of simulations are performed. The experimental results show that with the property of spatial reuse, PEM not only reduces power consumption, but also leads to higher network throughput in comparison with the existing work, such as DCF, DCS, and DPSM.
Relation:	Advanced Information Networking and Applications, 2005. AINA 2005. 19th International Conference on, V.1, pp.420-425
DOI:	10.1109/AINA.2005.47
Appears in Collections:	[Graduate Institute & Department of Computer Science and Information Engineering] Proceeding [Department of Innovative Information and Technology] Proceeding

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