Nonlinear Congestion Control Scheme for Time Delayed Differentiated-Services Networks

Using non-linear control theory we developed and analyzed a generic Integrated Dynamic Congestion Controller “IDCC” scheme for controlling differentiated-services network traffic, having the information on the status of queue in the network. The controller scheme is based on a nonlinear model of the network which is generated using fluid flow model, considering time delay. The time delay is introduced in the control signal of premium service. In addition, a Lyapunov approach is employed to guarantee the stability of the closed loop system for premium traffic control strategy.

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