Abstract
In this paper we evaluate the statistical multiplexing gain in ATM networks for bursty as well as variable bit rate (VBR) traffic using a fluid-flow approximate model. We obtain the required bandwidth per source in a finite buffer multiplexer in order to achieve a given Grade of Service (GOS), expressed by the cell loss probability. For both bursty and VBR traffic sources, we perform a sensitivity analysis of significant parameters in the homogeneous case (all traffic sources are of the same type). The required bandwidth for bursty sources is shown to depend on burst and buffer length through their ratio. Finally, the mixing of bursty traffic and variable bit rate is considered. We compare the results obtained through simulation with approximations proposed in the literature.
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