Stationary analysis of certain Markov-modulated reflected random walks in the quarter plane

Ioannis Dimitriou ()
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Ioannis Dimitriou: University of Patras

Annals of Operations Research, 2022, vol. 310, issue 2, No 3, 355-387

Abstract: Abstract In this work, we focus on the stationary analysis of a specific class of continuous time Markov-modulated reflected random walks in the quarter plane with applications in the modelling of two-node Markov-modulated queueing networks with coupled queues. The transition rates of the two-dimensional process depend on the state of a finite state Markovian background process. Such a modulation is space homogeneous in the set of inner states of the two-dimensional lattice but may be different in the set of states at its boundaries. To obtain the stationary distribution, we apply the power series approximation method, and the theory of Riemann boundary value problems. We also obtain explicit expressions for the first moments of the stationary distribution under some symmetry assumptions. An application in the modelling of a priority retrial system with coupled orbit queues is also presented. Using a queueing network example, we numerically validated the theoretical findings.

Keywords: Markov-modulated reflected random walks; Power series approximation; Boundary value problems; Stationary analysis; Networks with coupled queues (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s10479-020-03676-8

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