A predictive hop-by-hop congestion control policy for high speed networks

The authors present a predictive congestion control policy for carrying data traffic in the presence of real-time traffic that has stringent delay requirements, such as voice and video traffic. The predictive policy attempts to predict the buffer content of a node at some time in the future. The policy is based on information exchange between adjacent nodes of the network. The cross traffic is characterized by its mean rate, its variance, and the correlation, and the performance of the scheme is studied over a wide range of cross traffic parameter values. The effect of higher link speeds and larger propagation delays on the performance is studied. The predictive policy is compared to other policies. The investigation shows that predictive control policy performs significantly better than static or adaptive end-to-end rate control policies