Multiserver queueing systems with retrials and losses

Details Multiserver queueing systems with retrials and losses Multiserver queueing systems with retrials and losses

2006-05-10

arxiv.org/abs/math/0605285v4

ANZIAM Journal, 48 (2007), 297-314

Mathematics

Probability

21 pages, double spaced I added additional details in introduction

Scientific paper

The interest to retrial queueing systems is due to their application to telephone systems. The paper studies multiserver retrial queueing systems with $n$ servers. Arrival process is a quite general point process. An arriving customer occupies one of free servers. If upon arrival all servers are busy, then the customer waits for his service in orbit, and after random time retries more and more to occupy a server. The orbit has one waiting space only, and arriving customer, who finds all servers busy and the waiting space occupied, losses from the system. Time intervals between possible retrials are assumed to have arbitrary distribution (the retrial scheme is exactly explained in the paper). The paper provides analysis of this system. Specifically the paper studies optimal number of servers to decrease the loss proportion to a given value. The representation obtained for loss proportion enables us to solve the problem numerically. The algorithm for numerical solution includes effective simulation, which meets the challenge of rare events problem in simulation.

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