A counter based congestion control (CBC) for ATM networks

Abstract

Abstract This paper presents and analyzes a new congestion control strategy targeted toward integrated services in high speed ATM networks. The proposed control combines a new transmission control scheme with an existing access control to provide efficient, fair, and congestion-free network control. The transmission control scheme uses counters at each node to regulate the flow of packets from the output packet queues to the outgoing link. The transmission control is designed to be flexible in accomodating various existing and expected applications and to be simple in implementation. The resulting congestion control strategy supports different service rate for each service class according to its individual requirements and meets the GoS of each service class. The strategy is proven to provide bounded end-to-end queueing delay for each individual real-time application and at the same time give a best effort service to loss-sensitive and delay-tolerable data streams. An analytical model is presented to study the system state queueing behavior and the results how that the proposed strategy also has a good average performance.