QUEUEING PERFORMANCE OF DEMAND-ASSIGNED MULTI-ACCESS COMMUNICATION SYSTEMS UNDER BURSTY TRAFFIC CONDITIONS.

The authors deal with a multichannel queueing system in which the arrival process is doubly stochastic Poisson process with fluctuating arrival rates (bursty traffic) and service rate alternates based on the queue size. This model is used to evaluate the performance of a demand-assigned access-control policy. This policy is used to share bandwidth resources of a multiuser communication channel or the service resources of a switching/processing system. Under this scheme, bandwidth is allocated to each service channel in accordance with the underlying system queue size. The z-transform of the queue-size steady-state distribution, the expectation, and the variance is derived. Numerical results are presented to compare the performance of the queue-size adaptive bandwidth-sharing policy with that of a fixed-assignment scheme.