A new voice scheduling scheme for broadcast bus local area networks

Scheduling of voice traffic on broadcast-bus local area networks is considered. A voice scheduling scheme is proposed and evaluated. In this scheme, active voice calls are organized using a distributed global queue. Access scheduling overhead is reduced by voice packet arrival anticipation. To guarantee fairness and to reduce variance of the waiting time, the voice packet build-up during the overhead period is fairly shared among all calls by a round-robin service discipline. Three different voice packet service cases, namely nonexhaustive, exhaustive, and no-queueing, are evaluated. Simple closed-form approximation formulas have been proposed which show good agreement with simulation. The proposed scheme is shown to have performance approaching that of the centralized system