A novel two-queue model for ATM networks

This paper presents novel multimedia traffic models for the characterization of the queueing performance of an ATM network in terms of the overall performance characteristics, such as, buffer occupancy (in cells), jitter distribution and its impact from spatial correlation of the mono-media streams. The main characteristics of the present treatment lies in introducing two critical new features crucial for the accurate assessment of the queueing performance of an ATM network with multimedia traffic handling capabilities. First, unlike most of the conventional analysis which assume a 1-D known arrival process, this paper presents 2-D general independent (GI) arrival process models. Second, the model assumes multiple correlated batches of information units arriving in the same time slot, enter multiple queues with multiple servers. Specifically, spatial correlations present in multimedia traffic are taken into account and numerical examples showing the overall performance of the proposed queueing model are presented. These results are then compared with that of the conventional single queue models, i.e., GI-D-c. We have established the fact that GI-D-c model and the like under or overestimate the average system contents depending on the correlation among the mono-media streams and the server configurations