Explicit solutions for the steady state distributions in M/PH/1 queues with workload dependent balking

  • Authors:
  • Liqiang Liu;Vidyadhar G. Kulkarni

  • Affiliations:
  • Department of Statistics and Operations Research, University of North Carolina, Chapel Hill 27599-3180;Department of Statistics and Operations Research, University of North Carolina, Chapel Hill 27599-3180

  • Venue:
  • Queueing Systems: Theory and Applications
  • Year:
  • 2006

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Abstract

We consider an M/PH/1 queue with balking based on the workload. An arriving customer joins the queue and stays until served only if the system workload is below a fixed level at the time of arrival. The steady state workload distribution in such a system satisfies an integral equation. We derive a differential equation for Phase type service time distribution and we solve it explicitly, with Erlang, Hyper-exponential and Exponential distributions as special cases. We illustrate the results with numerical examples.