Performance analysis of an ATM service multiplexer in the NCIH

Abstract

Analyzes the performance of an output-buffered asynchronous transfer mode service multiplexer (ATM-SMX) in the North Carolina Information Highway (NCIH). The ATM-SMX is modeled as a discrete-time finite-buffer single-server queueing system, where two types of traffic represent the inputs of the multiplexer: (1) nonreal-time loss-sensitive traffic; and (2) real-time loss-insensitive traffic. The authors assume that there are N identical type 1 sources each modeled as a Bernoulli process. The authors also assume that there is a single type 2 source modeled as a periodic batch arrival where the batch site follows a general distribution. All the slow-speed inputs of the ATM-SMX are multiplexed onto a single high-speed output link, and the service rate is constant. The authors adopt a scheduling policy which suits the characteristics of these two types of traffic. An exact analysis is developed to obtain the waiting time distributions and cell loss probabilities for both types of traffic.