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The authors illustrate the transport layer unfairness problem in the IEEE 802.11 Wireless Local Area Networks (WLANs). They design a link layer access control block for the Access Point (AP) in order to provide fair Transmission Control Protocol (TCP) access in an 802.11 infrastructure Basic Service Set (BSS). The novel and simple idea of the proposed control block is employing a congestion control and filtering algorithm on TCP ACKnowledgment (ACK) packets of uplink flows, thereby prioritizing the access of TCP data packets of downlink flows at the AP.
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