一种基于RTT的改进拥塞控制算法  

An Adapted RTT-based Congestion Control Algorithm

作　　者：易乔木[1] 程金树[1] 方宏超[2] 陈幼平[2] 

机构地区：[1]武汉理工大学材料科学与工程学院,湖北武汉430070 [2]华中科技大学机械科学与工程学院,湖北武汉430074

出　　处：《机械与电子》2007年第7期64-67,共4页Machinery & Electronics

基　　金：湖北省自然科学基金资助(2005ABA269);湖北省科技攻关计划资助(2004AA101B01)

摘　　要：对网络拥塞机制进行了分析,针对传统拥塞控制算法的不足,在增加慢启动阶段的拥塞窗口的同时,根据对波动变化的分析,在不改变网络处理能力的情况下,通过对拥塞进行预测,提出了一种新的自适应拥塞控制算法。该算法已经应用于实际网络系统中。与传统拥塞控制算法比较,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。This paper analyzes the mechanism of network congestion. For the disadvantages of Tahoe TCP congestion control algorithm,basing on analysis of the roundtrip delay, it increases the cwnd in ＂slow start＂ so as to propose an adapted RTT- based congestion control algorithm under unchanging the capability of network processing, according to the prediction of congestion. It has been applied in network- based system for products quality detection. 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 it has significance on network congestion control.

关 键 词：拥塞窗口 往返延迟 拥塞控制 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]