A Scheduling Algorithm for Improving Fairness between Uplink TCP Flows

Significant TCP unfairness in wireless local networks has been reported during the past several years. This unfairness results from the greedy TCP protocol and shared wireless medium. To solve the unfairness problem between uplink TCP flows, we proposed a scheduling algorithm called uplink weighted fair queueing (UWFQ). By adjusting the service weight of ACK packets, UWFQ achieves the channel adaptive fairness between uplink TCP flows. Analysis and simulation results show that UWFQ not only improves the fairness greatly, but also achieves higher total network throughput.