An algorithmic model for the performance evaluation of the medium access control (MAC) protocol for a satellite system in an asynchronous transfer mode (ATM) environment is presented. This model allows analysis of general load configurations and yields the mean value of the performance parameters (e.g. queue lengths and access delays). The model is based on a computer-oriented approach, and the characterization of the key model variables is obtained by means of an iterative procedure. A comparison of the model analysis results to those obtained by a simulative approach shows a satisfactory matching.>

An access protocol suitable for asynchronous transfer mode (ATM) operation in an integrated service broadband metropolitan area network (MAN) is presented. This protocol is designed for a twin-bus optical network and is characterized by a fully distributed control mechanism. A detailed description of the MAC procedure and the results of its performance evaluation are given. In particular, the high fairness degree and the very high throughput values that are the distinctive features of this protocol are highlighted and compared with those relevant to the current version of the IEEE standard 802.6.>