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TCP Fairness among stations cannot be supported in IEEE 802.11 WLANs using the Distributed Coordination Function (DCF). In order to resolve this problem the author proposed the Weighted Window method, in which each station controls the rates of its TCP flows based on TCP window size. The Weighted Window can provide per-station fairness when the number and direction of flows in each station are different. This method can be simply implemented in mobile stations without having to modify the MAC layer. The properties of the proposed method are investigated and its effectiveness is verified through simulations.
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