Abstract
IEEE 802.11 Medium Access Control (MAC) protocol provides a competition-based distributed channel access mechanism for mobile stations to share the wireless medium in wireless Ad Hoc networks. Under the precondition of variable packet length, an energy analytical method was proposed, which calculated the energy efficiency of the basic, the RTS/CTS (Request To Send/Clear To Send) and the hybrid access mechanisms of the IEEE 802.11 Distributed Coordination Function (DCF). Furthermore, the effects of the network size, the average packet length, maximum backoff time, and the initial contention window on the energy efficiency of IEEE 802.11 DCF were explored in detail. Correctness and effectiveness of the proposed analytical method were verified through detailed simulation results.
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