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Carrier Sensing Multiple Access with Collision Avoidance (CSMA/CA) protocol is a Medium Access Control (MAC) protocol used by IEEE 802.11 stations to arbitrate the access of the shared wireless medium. With the increasing programmability of network adapter, malicious users can modify the wireless interface easily in order to gain some unfair shares of bandwidth. In particular, the authors consider the selfish behaviour of reducing the contention window size in order to get a higher throughput. Three counteractions proposed were studied and compared. The validity of their problem formulations and solution approaches were commented.
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