38th Annual IEEE Conference on Local Computer Networks (2011)
Oct. 4, 2011 to Oct. 7, 2011
Hairui Zhou , School of Software, Shanghai Jiao Tong University, Shanghai 200240, China
Chengchen Hu , Department of Computer Science and Technology, Xi'an Jiao Tong University, Xi'an 710049, China
Jian Li , School of Software, Shanghai Jiao Tong University, Shanghai 200240, China
Lina He , Department of Surveying and Geoinformatics, Tongji University, Shanghai 200092, China
Fei Hu , School of Software, Shanghai Jiao Tong University, Shanghai 200240, China
The eXplicit Control Protocol (XCP) is a promising congestion control protocol that outperforms TCP in terms of efficiency, fairness, persistent queue length, and packet loss rate. However, XCP will behave in a noticeably unstable manner if the maximum round trip time of a flow is much larger than average round trip time of all flows, which is a typical nonlinear instability. In this paper, eXCP is proposed to stabilize the system and enable XCP to deal with heterogeneous feedback delays. With the aid of the exponentially weighted moving average filter, eXCP directly reduces the volatility of the control interval and effectively improves the stability of the aggregate input traffic at a bottleneck link. Simulations also have shown that the variance of per-flow throughput and round trip time decrease dramatically.
J. Li, F. Hu, H. Zhou, L. He and C. Hu, "Improving the stability of eXplicit Control Protocol under heterogeneous delays," 2011 IEEE 36th Conference on Local Computer Networks(LCN), Bonn, 2011, pp. 135-138.