Internet congestion control with delayed state feedback
Kai Jiang, Xiaofan Wang, Yugeng Xi · 2004
Random early detection (RED) has been proposed to avoid impending Internet congestion and simultaneously achieve high throughput and low average delay. However, it has been found that the interaction between a RED gateway and TCP connections may exhibit complicated nonlinear (in particular, chaotic) behavior and lead to network instability. In this paper a time-delayed state feedback controller is implemented to enhance the stability of RED. We validate the algorithm by extensive ns-2 simulations.