STEADY-STATE ANALYSIS OF RATE-CONTROLLED DATA TRANSPORT IN ATM LOCAL-AREA NETWORKS

This paper presents a steady-state analysis of rate-based how control operating with the regular window mechanism Of the transport protocol in ATM local area network (LAN) or local high-speed network environmen ts. The rate control schemes are divided into single-threshold and two -threshold cases. By applying Norton's theorem for queuing model simpl ification and deriving a computation algorithm, the analytical results for steady-state performance of these schemes are found to be computa tionally efficient and yield accurate approximations. In the numerical results, the rate control schemes have been shown to have significant effects in reducing congestion levels at the receiving entity as well as in the highspeed networks. We also conclude that the two-threshold rate control scheme can be more effective in alleviating network cong estion conditions than single-threshold control, while keeping the con trol overhead (in terms of the rate adjustment frequency) at a low lev el, provided that threshold values are selected appropriately. The tot al throughput could be affected, but only in a limited fashion. (C) 19 97 Elsevier Science B.V.