Abstract

This paper analyzes how the BWB mechanism influences the status of slots traveling on the bus (slot-occupancy-pattern process) in a DQDB network. To capture the most important dependencies between consecutive slots at light-moderate load [CONTI91c] we have modeled the slot-occupancy-pattern process via a discrete-time first-order Markov process. In this paper we use a simplified DQDB network [CONTI91b] for which we derive a closed formula for the joint probability density function for the slot-occupancy-pattern of two consecutive slots. Our formulas are used to show the relationship between load, network configuration, BWB value and the slot-occupancy-pattern process.

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