一种基于ECN的无线TCP拥塞控制机制

ECN-based Congestion Control Mechanism for Wireless TCP

针对无线异构链路环境中传统TCP拥塞控制机制效率较低的问题,本文提出一种基于ECN的多级反馈算法。该算法在ECN的基础上可以根据RTT动态地给网络划分等级并进行概率反馈,改变了ECN的二元特性,有效提高了无线数据传输效率。仿真结果表明该算法可降低丢包率,减少拥塞次数,提高吞吐量。

TCP has been used widely in all sorts of wireless environments. However, the congestion control approaches designed for wired TCP or even some wireless situations are not effective enough. This paper proposes a multi-level ECN-based feedback algorithm MLF_ECN, which works by dividing the network congestion level dynamically. The simulation results show that this method can smooth the congestion window, reduce the loss rate of congestion packets, and it can also improve the throughput of the network efficiently.