基于P-RED算法的计算机网络TCP拥塞控制  

Transmission Control Protocol Congestion Control Based onPredictive Random Early Detection Algorithm in Computer Networks

作　　者：沈伟[1] 邵惠鹤[1] 

机构地区：[1]上海交通大学自动化研究所,上海200030

出　　处：《上海交通大学学报》2004年第4期527-532,共6页Journal of Shanghai Jiaotong University

基　　金：国家重点基础研究发展规划(973)资助项目(G1998030415)

摘　　要：源端到目的端的往返传输时延将给TCP拥塞控制的稳定性和快速性带来极大的不利.基于此,应用控制理论中的Smith原理,并与随机早期检测(RED)算法相结合,提出了具有预测能力的RED(P-RED)算法,以使TCP拥塞控制更加及时,控制的稳定性更高.此外,从理论上分析了该算法的稳定性,并导出了算法中主要参数取值的理论范围,从而对参数的设置起指导作用,从理论上保证了控制的品质.The round trip transmitted delay from source to destination has a great adverse effect on the stability and rapidity of the transmission control protocol (TCP) congestion control. Aiming at the problem, this paper combines Smith principle in control theory with the random early detection algorithm and proposes the predictive random early detection algorithm that has the prediction ability. The proposed scheme can make the TCP control more stable and in time. The stability of the algorithm was analyzed, and the scope of the main parameter was educed in theoretical range. Thus, the control quality can be guaranteed theoretically.

关 键 词：计算机网络 传输控制协议 拥塞控制 随机早期检测算法 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TN915.2[自动化与计算机技术—控制科学与工程]