An analysis of cell loss process in an ATM network under partial buffer sharing policy

The PBS (partial buffer sharing) space priority mechanism is one of the priority control methods which may improve the performance of a single-server queueing system when mixed traffic with different performance requirements is applied to the system. This paper analyzes the cell loss behavior of PBS assuming loss-sensitive traffic and delay-sensitive traffic are applied to the system. To derive the successive cell loss probabilities, which are an important performance measure of real-time traffic, we develop a recursive algorithm. Performance results show that the successive cell loss probabilities obtained by our method are larger than the probabilities derived from an independent cell loss assumption. These results may indicate the limit of PBS for real-time traffic