On Stability Conditions of Congestion Control in High-speed Long-latency Networks
Shunyi Zhang · Journal of Nanjing University of Posts and Telecommunications · 2011
The stability conditions of congestion control in high-speed long-latency networks in FAST TCP are studied in this paper.A continuous time fluid flow model of the link buffer is considered to create a linear control system related to FAST TCP.Linearing the fluid flow model and window control model,with Laplace transform version of them,a negative feedback system with open loop transfer function is presented.Then,in the case of the link is shared by many FAST flows,a sufficient condition on asymptotical stability of FAST TCP congestion window related to the parameteris obtained.Packet level NS2 simulations are used to verify the theoretical results.