PREDICTIVE BURSTY REAL-TIME TRAFFIC CONTROL FOR TELECOMMUNICATIONS SWITCHING SYSTEMS

摘要

A traffic control system (and associated method) according to the presentinvention includes a feedback control mechanism in which the controlledvariable isprocessor occupancy, the controlling variable is the amount of resourcesnecessary tosatisfy the operational requirements of the switching system, and the setpoint is theaverage expected load based on a Poisson arrival rate. Current processoroccupancy iscompared, on an instantaneous basis against the set point to detenmine if itexceeds theaverage expected load. If so, the controlling variable is adjusted to allocateadditionalresources to process the offered traffic load. The process continues until thetrafficburst expires. Additional resources may be obtained by eliminating ordeferringnon-essential work, and by allocating additional call registers, effectivelyaccepting workin larger increments or batches. By instantly and proactively responding totrafficbursts, this traffic control system aids the switching system in weatheringbrief periodsof high traffic, without actually reaching an overload condition and invokingoverloadcontrols. As a result, switching system capacity is increased, and otherperformancecharacteristics are improved.