基于自适应加权平均的TCP友好拥塞控制机制  

TCP-Friendly Congestion Control Mechanism Based on Adaptive Weighted Average

作　　者：黄奎[1] 吴亦川[1] 郑健平[1] 吴志美[1] 

机构地区：[1]中国科学院软件研究所

出　　处：《软件学报》2005年第12期2124-2131,共8页Journal of Software

基　　金：国家自然科学基金~~

摘　　要：TCP友好拥塞控制是保证实时媒体流和组播业务在Internet广泛应用的关键技术.基于收端TCP模拟方案TEAR(TCPemulationatreceivers),提出了一个根据丢包类型和当前拥塞周期的持续时间动态调整加权平均参数的拥塞控制机制,称为自适应TCP友好拥塞控制方案ATFCC(adaptiveTCP-Friendlycongestioncontrol).仿真结果表明,ATFCC方案在速率平滑程度和TCP友好性方面的性能优于TCP友好速率控制协议TFRC(TCP-Friendlyratecontrol).TCP-friendly congestion control is a key technique to guarantee the large-scale deployment of real-time streaming and multicast service in the Internet. On the basis of TCP emulation at receivers （TEAR） scheme, a new congestion control mechanism, called adaptive TCP-friendly congestion control （ATFCC）, is proposed. In this scheme, the parameters of weighted average are dynamically adapted according to the type of packet loss and the duration of current congestion epoch. Simulation results show that ATFCC scheme outperforms TCP-Friendly rate control （TFCC） protocol in terms of rate smoothness and fairness to FCP flows.

关 键 词：拥塞控制 TCP友好 自适应加权平均 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]