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Saturation throughput analysis of an input queueing ATM switch with multiclass bursty traffic

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2 Author(s)
L. Jacob ; Regional Eng. Coll., Calicut, Kerala, India ; A. Kumar

We consider an N/spl times/N non-blocking, space division ATM switch with input cell queueing. At each input, the cell arrival process comprises geometrically distributed bursts of consecutive cells for the various outputs. Motivated by the fact that some input links may be connected to metropolitan area networks, and others directly to B-ISDN terminals, we study the situation where there are two classes of inputs with different values of mean burst length. We show that when inputs contend for an output, giving priority to an input with smaller expected burst length yields a saturation throughput larger than if the reverse priority is given. Further, giving priority to less bursty traffic can give better throughput than if all the inputs were occupied by this less bursty traffic. We derive the asymptotic (as N/spl rarr//spl infin/) saturation throughputs for each priority class.<>

Published in:

IEEE Transactions on Communications  (Volume:43 ,  Issue: 2/3/4 )