A new formula for the transient behaviour of a non-empty M/M/1/∞ queue

  • Authors:
  • A. M. K. Tarabia

  • Affiliations:
  • Department of Mathematics, Damietta Faculty of Science, New Damietta, Egypt

  • Venue:
  • Applied Mathematics and Computation
  • Year:
  • 2002

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Abstract

This paper studies the most general model of the Markovian queues namely M/M/1/∞ queue with any arbitrary number "i" of customers being present in the system initially. For this model, a new and simple series form is obtained for the transient state probabilities whence all particular cases concerning the system being empty and steady-state situations can be derived straightaway. The coefficients in this series satisfy iterative recurrence relations which would allow for the rapid and efficient numerical evaluations of the state probabilities. Moreover, a simple algebraic proof to show the equivalence between different formulae of a non-empty M/M/1/∞ and the new formula is established.