Improving the Up/Down TCP Fairness in Wireless Access Network
Wang Jian-xin · Journal of Chinese Computer Systems · 2011
In wireless access networks,the wireless service is biased toward the uplink TCP flow and the downlink TCP flow tends to starve.This paper analyzes the TCP unfairness problem and proposes a buffer sizing algorithm,called MBA(Maximum Buffer for ACKs).Based on the relation between the TCP unfairness and buffer sizing,MBA algorithm adjusts the maximum size of buffer allocated for the ACK packets.Analysis and simulation results show that,MBA not only improves the fairness greatly by limiting the buffer for ACK packets,but also achieves higher total network goodput by reducing the channel occupying time of ACK packets.