(sigma, rho)-Characterization Based Connection Control for Guaranteed Services in High Speed Networks

In this paper we present a method to establish real-time connections with guaranteed qualityof -services, based on per-session (oe; ae)-characterization. Under two distinctive service disciplines, rate proportional processor sharing and fixed rate processor sharing, we derive tighter probabilistic bounds on per-session end-to-end average cell loss rate, which is caused by either buffer overflow in the route or excessive delay at the destination. One remarkable feature of the bounding solutions is that they are solely determined by the probabilistic (oe; ae)-characterization of each session itself, independent of the network environment and other connections. To improve network resource utilization, our method is extended to allow statistical sharing of buffer resources at each node. The admission control scheme presented in this paper has a great flexibility in connection management since both bandwidth and buffer resources can be adaptively allocated among incoming and existing sessi..