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Buffer dimensioning in ATM networks using no-priority and pushout space priorities

Because of the statistical multiplexing of a large number of sources in an ATM network, it is not possible to eliminate cell losses due to buffer overflows. Several space priority mechanisms have been proposed in the literature to manage buffers in the case of congestion. The aim of this paper is to establish buffer dimensioning criteria for the no-priority and the pushout space priority schemes under a broad range of input traffic parameters for a given QoS requirement. Analytical models have been developed to enable the study under very low cell loss probabilities.