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Strong perturbation bounds for the stationary distribution of the main multi-server retrial queue model

Author

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  • Nabil Ait Yala
  • Badredine Issaadi
  • Karim Abbas

Abstract

Many queuing models are represented by Markov chains with infinite countable state space and we will often want to know their stationary distributions in order to deduce their characteristics, but the calculation of these distributions is generally difficult, if not impossible, and do not have closed form solutions because of the infinite number of equations to solve. This is why researchers try to obtain approximations that converge quickly to these distributions. Perturbation theory for Markov chains addresses the question of what impact can occur on a stationary distribution of a Markov chain if its transition matrix is slightly disturbed. In this paper, we use the strong stability approach based on the drift condition to establish analytic error bounds for the generalised truncation of a main multi-server retrial queue model. At the end of this article, we give numerical examples in order to show the quality of the error bounds obtained.

Suggested Citation

  • Nabil Ait Yala & Badredine Issaadi & Karim Abbas, 2025. "Strong perturbation bounds for the stationary distribution of the main multi-server retrial queue model," International Journal of Mathematics in Operational Research, Inderscience Enterprises Ltd, vol. 31(1), pages 1-40.
  • Handle: RePEc:ids:ijmore:v:31:y:2025:i:1:p:1-40
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