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A Discrete-Time Geo/G/ 1 Retrial Queue with Two Different Types of Vacations

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  • Feng Zhang
  • Zhifeng Zhu

Abstract

We analyze a discrete-time 1 retrial queue with two different types of vacations and general retrial times. Two different types of vacation policies are investigated in this model, one of which is nonexhaustive urgent vacation during serving and the other is normal exhaustive vacation. For this model, we give the steady-state analysis for the considered queueing system. Firstly, we obtain the generating functions of the number of customers in our model. Then, we obtain the closed-form expressions of some performance measures and also give a stochastic decomposition result for the system size. Moreover, the relationship between this discrete-time model and the corresponding continuous-time model is also investigated. Finally, some numerical results are provided to illustrate the effect of nonexhaustive urgent vacation on some performance characteristics of the system.

Suggested Citation

  • Feng Zhang & Zhifeng Zhu, 2015. "A Discrete-Time Geo/G/ 1 Retrial Queue with Two Different Types of Vacations," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-12, April.
    • Handle: RePEc:hin:jnlmpe:835158
    DOI: 10.1155/2015/835158
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