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One of the most important problems that must be solved in ATM networks is the priority cell discarding (PCD). A two priorities cell discarding method is suggested and analyzed under conditions of discrete time cell arrival. By introducing the π operator, an iterative algorithm that can accelerate the speed of convergence when calculating the cell loss probability is suggested. The effectiveness of the PCD in ATM networks is proved by the numeric results. [ABSTRACT FROM AUTHOR]

This paper proposes a new high-performance switching element with the new shared-memory queuing policy, which is called blocked-cell shared-memory (BCSM) queuing. As the name means, instead of buffering all cells through them, the BCSM switching elements only buffer the blocked cells at their input ports. Theoretic analysis results under the uniform traffic model prove that BCSM switching elements have better performance than shared-memory switching elements. [ABSTRACT FROM AUTHOR]