Protecting Transmissions when Using Power Control on 802.11 Ad Hoc Networks
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چکیده
This paper presents the ALCA (Asymmetric Link Collision Avoidance) protocol. ALCA was designed to deal with a known deficiency of the Basic Scheme Gomez et al., 2001 for power control in 802.11 ad hoc networks, which occurs when links become asymmetrical as a result of power control. The proposed ALCA mechanism conveys transmission duration information to these terminals through a simple modification of the 802.11 MAC protocol. Through extensive simulation, the performance of ALCA is investigated and compared to PCM (a solution that requires major hardware updates). Results indicate that ALCA outperforms PCM while being a considerably less complex solution.
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تاریخ انتشار 2005