A dynamic call admission scheme for VBR traffic in ATM networks

for VBR tra c in ATM networks Srinivasan Ramaswamy Newbridge Networks Corporation 600 March Road, P.O. Box 13600 Kanata, Ontario, CANADA K2K 2E6 Tel: (613) 591-3600 [email protected] Pawel Gburzynski University of Alberta Department of Computing Science Edmonton, Alberta, CANADA T6G 2H1 Tel: (403) 492-2347 [email protected] Abstract: The role of call admission control (CAC) in high-speed networks is to maintain the network utilization at a high level, while ensuring that the quality of service (QoS) requirements of the individual calls are met. We propose a generic dynamic call admission scheme for VBR and ABR tra c whose aim is to reduce the blocking rate for VBR calls at the expense of a higher blocking rate for ABR calls. Our scheme is generic because it builds up on a pre-existing static scheme, e.g., one based on a simple notion of e ective bandwidth.