REAL-TIME TRAFFIC CHARACTERIZATION FOR QUALITY-OF-SERVICE CONTROL IN ATM NETWORKS

One of the important challenges in the design of ATM networks is how t o provide quality-of-service (QoS) while maintaining high network reso urce utilization. In this paper, we discuss the role of real-time traf fic characterization in QoS control for ATM networks and review severa l approaches to the problem of resource allocation. We then describe a particular framework for QoS control in which real-time measurements of a connection stream are used to determine appropriate parameters fo r usage parameter control (UPC). Connection admission control (CAC) is based on the characterization of the aggregate stream in terms of the individual stream UPC descriptors, together with real-time measuremen ts.