Mathematics model and performance evaluation of a scalable TCP congestion control protocol to LNCS/LNAI proceedings

Abstract

So far the AIMD (Additive Increase Multiplicative Decrease) mechanism used by the conventional TCP congestion control protocol has been supported nearly by every Internet hosts. However, the conventional TCP has been designed without the theoretic foundations, so as to result in some problems in the long distance high speed network, such as the low bandwidth efficiency and the RTT (Round Trip Time) bias. Based on the flow fluid model, this paper models a scalable TCP congestion control protocol by the continuous differential equation on the RTT timescale, analyzes the condition for stability, and discusses the interrelations among stability, fairness and efficiency, which is aid to guide the design of end-to-end congestion control in the future. © Springer-Verlag Berlin Heidelberg 2005.