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TCP fairness is an important issue in WLAN because the wireless channel is shared by all wireless nodes. Due to TCP-unfriendly nature of ACK packet, the network service is biased toward the uplink TCP flow and the downlink TCP flow tends to starve. In this paper, a buffer allocation algorithm on the downlink buffer of the Access Point (AP) is proposed to improve the fairness among uplink and downlink...
In wireless local area networks (WLANs), the greedy closed loop control nature of TCP and the performance anomaly of wireless channel lead to the up/down and time unfairness problems between TCP flows. To achieve the wireless channel usage time fairness between the uplink and downlink TCP flows, we propose the up/down time fair LAS (UDTFLAS) scheduling algorithm. Taking into account the transmission...
In this paper, we have analyzed TCP packet transmission time of IEEE 802.11 MAC DCF protocol for wireless LANs a proposed enhanced backoff algorithm. It is considered the transmission time of TCP packet on the orthogonal frequency division multiplexing (OFDM) in AWGN channel. Also, to simulate wireless LANs system, we have assumed that three stations are operated, respectively. From the results, a...
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