Design of a new globally stable explicit rate controller for ABR service with saturation

摘要

In this paper, we consider the closed-loop rate-based flow control for available bit rate (ABR) service in asynchronous transfer mode (ATM) networks, where the ABR sources adjust their transmission rates in response to feedback explicit rates (ER) from the network switches. The feedback ER may be saturated due to the peak cell rate (PCR) and the minimum cell rate (MCR). The buffer occupancy state of the network switch can also be saturated due to the buffer occupancy. To solve saturation nonlinearity problem and analyze the stability globally, a new ER controller is designed, which is composed of a nonlinear controller and a linear controller.