网络拥塞原因及控制策略研究  

Causes analysis of network congestion and study of control strategies

作　　者：杜剑波[1] 朱志祥[1] 张静[1] 

机构地区：[1]西安邮电大学通信技术研究所,陕西西安710061

出　　处：《西安邮电学院学报》2012年第4期6-10,共5页Journal of Xi'an Institute of Posts and Telecommunications

基　　金：国家科技重大专项基金资助项目(2009ZX03004-003-04)

摘　　要：为了解决因特网的拥塞问题,对导致网络拥塞的原因进行探讨,介绍传输控制协议(Transmission Control Protocol,TCP)拥塞控制的原理及其基本算法,并针对慢启动算法提出改进算法。新算法通过实时带宽测量以及将慢启动后期分阶段实现,从而在大容量网络中提高信道利用率,并减少慢启动后期可能出现的大量丢包。仿真结果表明,改进算法具有更好的性能。In order to solve the problem of congestion in Internet, the causes of congestion are explored firstly, and then TCP（Transmission Control Protocol） congestion control principles and basic algorithms are described, in addition, an improved algorithm for slow start algorithm is proposed. New algorithm is realized through real-time bandwidth measurement and by stages of the late stage of slow start, thus, it improves the channel utilization in large-capacity network, and avoids a lot of packet loss which may occur in late stage of slow start. The simulation results show that the improved algorithm has better performance.

关 键 词：传输控制协议 拥塞控制 慢启动 带宽测量 分阶段 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]