IEEE/ACM Trans. Netw. 01/2006; 16:1260-1271.
Automatica. 01/2004; 40:905-915.
ABSTRACT: The objective of this paper is to study the small-signal stability of congested TCP networks. The starting point for this analysis is a fluid model describing the interaction of TCP-controlled traffic with congested routers. Assuming integral action in the active queue management scheme, we compute the network's equilibrium point about which we determine the network's small-signal dynamics. Specializing to networks comprised of m links and m+1 sources, we study closed-loop stability, study network scaling, and evaluate robustness to variations in network parameters.
American Control Conference, 2002. Proceedings of the 2002; 02/2002