ADMISSION CONTROL OF MULTICLASS TRAFFIC WITH SERVICE PRIORITIES IN HIGH-SPEED NETWORKS

We consider a fluid model of a system that handles multiple classes of traffic. The delay and cell-loss requirements of the different classe s of traffic are generally widely different and are achieved by assign ing different buffers for different classes, and serving them in a str ict priority order. We use results from the effective bandwidth of the output processes (see Chang and Thomas (1995)) to derive simple and a symptotically exact call-admission policies for such a system to guara ntee the cell-loss requirements for the different classes assuming tha t each source produces a single class traffic. We compare the admissio n-control policies developed here with the approximate policy studied by Elwalid and Mitra (1995) for the case of two-class traffic.