Vacation models deal with a very important class of real life congestion situations
encountered in day-to-day as well as in industrial scenario. A vacation in queueing context …

This paper evaluates the efficacy of a discrete-time GeoX/G/1 recurrent model with Bernoulli
feedback and two independent types of vacations, one of them is a non-exhaustive vacation …

The current study considers a Markovian queue, where the server is subject to breakdowns
while providing service to customers. During a breakdown period, the server lowers the …

This paper studies the equilibrium behavior of customers in the Geo/Geo/1 queueing system
under multiple vacation policy. The server leaves for repeated vacations as soon as the …

We have investigated a discrete-time Geo/G/1 retrial queue under J vacation policy and
general retrial times, which can be applicable to many digital systems, viz. broadband …

We present in this paper a thorough classified review of queueing system with unreliable
server. We then consider a queueing system where service is rendered to groups of …

This study develops novel reliability models for discrete-time cold standby repairable
systems with unreliable repair facility and retrial mechanism. In view of the situation that the …

This paper analyses a discrete-time GeoX/Geo/1 queue with unreliable server and working
vacation. During the vacation period, the server renders service to the primary job at lower …