An iterative approach to comprehensive performance evaluation of integrated services networks

Future networks are expected to integrate diverse services. For this purpose, new algorithms and protocols have been proposed for link scheduling, admission control, and routing. The interaction between these three components is crucial to the performance of the network. However, this interaction is difficult to model realistically using available techniques. We present an iterative discrete-time approach that yields a realistic model which takes into account this interaction. The model applies to connection-oriented networks with different types of real-time connections. It allows the investigation of various control schemes for both transient and steady-state performances. Preliminary results indicate that our approach is computationally much cheaper than discrete-event simulation, and yields sufficiently accurate performance measures