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Analysis of non-uniform cell destination distribution in virtual output queueing systems

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2 Author(s)
Elhanany, I. ; Electr. & Comput. Eng. Dept., Ben-Gurion Univ., Beer-Sheva, Israel ; Sadot, D.

We develop a discrete-time analytical queueing model for studying the performance of input-queued switches with non-uniform cell destination distribution. Virtual output queues are assumed at the ingress ports where cell arrivals are geometrically distributed and the service process is based on a work conserving random selection scheme. We consider the conditions for stability as basis for deriving closed-form expressions for the stationary queue size distributions from which the mean queue sizes and mean cell latencies are derived. We show that a very good agreement is obtained between simulation and analytical results.

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Communications Letters, IEEE  (Volume:6 ,  Issue: 9 )