基于窗口的端到端拥塞控制:网络稳定性与效率  

Window-Based End-to-End Congestion Control: Network Stability and Efficiency

作　　者：邵立松[1] 张鹤颖[1] 窦文华[1] 

机构地区：[1]国防科学技术大学计算机学院,长沙410073

出　　处：《计算机学报》2006年第3期353-360,共8页Chinese Journal of Computers

基　　金：国家自然科学基金(90104001);国家"九七三"重点基础研究发展规划项目基金(2003CB314002)资助.

摘　　要：拥塞窗口算法对网络稳定性和效率的影响表现在平衡状态附近,分组级递增量越小网络稳定性越强;往返时间级递增量的一阶导数越小网络效率越大.在以上研究的基础上,进而提出一种新拥塞控制算法的基本思想:根据拥塞反馈信号估计可用带宽,分组速率能快速收敛到并能长期保持在可用带宽附近.Although the conventional TCP protocol has already succeeded in controlling the traffic of the current Internet, it leads to very low efficiency of the high bandwidth-delay product network in the future. The authors study the impact of the congestion window increase function on the network stability and efficiency, and the results show that network stability depends on the packet level increment and network efficiency on the RTT level increment. Based on theory work, the authors put forward a new design idea of congestion control, that is to estimate available bandwidth according to congestion feedback signals and make sending rate converging quickly to the available bandwidth and staying around it for a long time.

关 键 词：拥塞控制 网络稳定性 网络效率 带宽延迟积 TCP 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]