Browsing by Author "Harvey, Nicholas Oliver"

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    Design of a scheduling mechanism for an ATM switch
    (2003) Harvey, Nicholas Oliver
    In this dissenation, the candidate proposes the use of a ratio to multiply the weights used in the matching algorithm to control the delay that individual connections encounter. We demonstrate the improved characteristics of a switch using a ratio presenting results from simulations. The candidate also proposes a novel scheduling mechanism for an input queued ATM switch. In order to evaluate the performance of the scheduling mechanism in terms of throughput and fairness, the use of various metrics, initially proposed in the literature to evaluate output buffered switches are evaluated, adjusted and applied to input scheduling. In particular the Worst-case Fairness Index (WFl) which measures the maximum delay a connection will encounter is derived for use in input queued switches.