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Design of Optimal Controller for the Congestion in ATM Networks  

Jung Woo-Chae (고려대학 전기공학과)
Kim Young-Joong (고려대학 전기공학과)
Lim Myo-Taeg (고려대학 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers D / v.54, no.6, 2005 , pp. 359-365 More about this Journal
Abstract
This paper presents an reduced-order near-optimal controller for the congestion control of Available Bit Rate (ABR) service in Asynchronous Transfer Mode (ATM) networks. We introduce the model, of a class of ABR traffic, that can be controlled using a Explicit Rate feedback for congestion control in ATM networks. Since there are great computational complexities in the class of optimal control problem for the ABR model, the near-optimal controller via reduced-order technique is applied to this model. It is implemented by the help of weakly coupling and singular perturbation theory, and we use bilinear transformation because of its computational convenience. Since the bilinear transformation can convert discrete Riccati equation into continuous Riccati equation, the design problems of optimal congestion control can be reduced. Using weakly coupling and singular perturbation theory, the computation time of Riccati equations can be saved, moreover the real-time congestion control for ATM networks can be possible.
Keywords
ATM Network; Congestion Control; Optimal Control; Weakly Coupling; Singular Perturbation;
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