Based on the careful analysis of several hundred publications, this book uniformly describes
basic methods of analysis and critical results of the theory of retrial queues. Chapters …

We consider a branch of queueing theory, retrial queueing systems, which is characterized
by the following basic assumption: a customer who cannot receive service (due to finite …

Retrial queueing systems have been extensively studied because of their applications in
telephone systems, call centers, telecommunication networks, computer systems, and in …

We study an M/G/1 queue with second optional service. Poisson arrivals with mean arrival
rate λ (> 0) all demand the first 'essential'service, whereas only some of them demand the …

Retrial queues have been widely used to model many problems arising in telephone
switching systems, telecommunication networks, computer networks and computer systems …

In this paper we consider a single server retrial queue where the server is subject to
breakdowns and repairs. New customers arrive at the service station according to a Poisson …

We consider a retrial queueing model with collision arising from the specific communication
protocol CSMAICD. Under the retrial control policy in which the retrial rate is inversely …

We present a survey of retrial queues with two types of calls and present new results of
several models. We consider the M1, M2/G/1 retrial queue and its variations which are the …

We consider an M 2/G 2/1 type queueing system which serves two types of calls. In the case
of blocking the first type customers can be queued whereas the second type customers must …

We analyze an unreliable M/M/1 retrial queue with infinite-capacity orbit and normal queue.
Retrial customers do not rejoin the normal queue but repeatedly attempt to access the server …