Performance evaluation of compound TCP+ congestion control parameters in wireless networks

Abstract

Recently, Compound TCP has come to be regarded as the most promising transport layer protocol for high-speed and long-distance networks. In our previous work, we demonstrated that Compound TCP degrades the throughput fairness in wireless LANs because of its greedy loss-based congestion control, and we proposed Compound TCP+ in order to solve this fairness issue. However, in our previous work, we did not examine the congestion control parameters of Compound TCP+. In this paper, we therefore evaluate the congestion control parameters for two congestion control methods: multiplicative decrease in the loss window size and linear decrease in the loss window size. Through our simulations, we show that a 0.5 linear decrease in the loss window size is the best approach.