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The convenience and easiness to implement and use of wireless local area networks , such as IEEE 802.11, is contrasted by the high energy consumption of mobile computers due to collisions and interfer...ences occurring on the wireless medium and leading to a high number of retransmissions a station must perform before there can be a successful transmission of a packet. Mobile stations being essentially battery-driven, it is important to ensure a long lifetime for these batteries and therefore energy-efficiency is an increasingly vital issue in the design of these systems. In this paper, we propose a novel approach to improve the Collision Avoidance mechanism specified in the IEEE 802.11 standard as a part of its Medium Access Control (MAC) protocol, by dynamically reducing the number of retransmissions required after a collision occurs on the medium.show more
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