Congestion control algorithms for ATM switching networks

The present paper proposes a control-theoretic approach to design rate-based controllers in order to flow-regulate the best-effort service and guaranteed service traffic through asynchronous transfer mode (ATM) switching networks. Classical control theory and Schur-Cohn stability criterion are exploited to design the traffic controllers for ATM switching networks. The stability and transient response of closed-loop congestion controlled systems are analyzed by utilizing Schur-Cohn stability criterion, which leads to certain necessary and sufficient stability condition under which the controlled ATM switching network is asymptotically stable in terms of buffer occupancy. Such proposed stability condition is then shown to be a key tool in designing a wide scope of adaptive controllers. Simulations are performed that show good performance of such controlled networks.