摘要： 对网络拥塞机制进行了分析，并根据对RTT波动变化的分析，在不改变网络处理能力的情况下，通过对拥塞进行预测，改进了传统的TCP拥塞控制算法，提出了一种新的自适应RTT拥塞控制算法(ARCC)。通过NS2仿真，与传统TCP拥塞控制算法进行了比较，仿真实验证明该方法拥塞窗口变化比较平稳，很少出现拥塞，不会导致超时重传和丢包快速重传，同时吞吐率较高，在拥塞避免方面具有一定的意义。

关键词: 自适应拥塞控制算法, 往返延迟(RTT), NS2仿真

Abstract: This paper analyzes the mechanism of network congestion. And basing on analysis of the wave of round-trip delay, it improve the traditional TCP congestion control algorithm and proposes a novel adapted RTT congestion control algorithm under unchanging the capability of network processing, according to prediction of congestion. It compares the two algorithms using NS2. The result proves that the congestion windows changing is comparatively calm, congestion is little, re-sending of overtime and losing packets is unable to bring on, and throughout is comparatively high. So this novel algorithm has significance on network congestion control.

中图分类号: 

• TP393.02