This paper is concerned with M X /G/1 retrial queueing model with pre-emptive resume priority, multi optional second phase and feedback. Priority customers are considered while the server is in service. Two stages of heterogeneous service, first essential service (FES) and second multi optional service (SMOS) are rendered. After termination of each service, with certain probability the customer may go to the retrial queue to repeat his service again, or may leave the system. After finishing service, with certain probability the server check whether there is any customers in the retrial queue. Steady state solutions and various performance measures are derived.

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MX/G/1 Retrial Queueing Model With Pre-Emptive Resume Priority, Multi Optional Second Phase, Feedback And Orbital Search

A single server batch arrival retrial queue with se rver vacation under Bernoulli schedule is considere d. Arrivals are controlled according to the state of the server. The necessary and sufficient condition for the system to be stab le is derived. Explicit formulae for the stationary distributions and performance measur es of the system in steady state are obtained. Nume rical examples are presented to illustrate the influence of the parameters on se veral performance characteristics.

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Batch arrival retrial queueing system with state dependent admission and bernoulli vacation

In this paper we consider a repairable M/G/1 retrial queue with Bernoulli vacation and orbital search. By supplementary variable technique, the probability generating functions of the system size distribution and the orbit size distribution under steady state are obtained. Queueing as well as reliability indices to predict the behavior of the system are derived. Various models studied earlier are deduced as special cases by appropriate choice of parameter values.

K. Udaya Chandrika

Papers

• performance analysis of repairable m/g/1 retrial queue with bernoulli vacation and orbital search