Title: Performance analysis of finite-source retrial queues operating in random environments

Authors: J. Roszik, J. Sztrik, J. Virtamo

Addresses: University of Debrecen, P.O. Box 12, H-4010, Debrecen, Hungary. ' University of Debrecen, P.O. Box 12, H-4010, Debrecen, Hungary. ' Helsinki University of Technology, P.O. Box 3000, FIN-02015 HUT, Finland

Abstract: This paper is concerned with the performance analysis of finite-source retrial queues with heterogeneous sources operating in random environments. All random variables involved in the model construction are assumed to be exponentially distributed with a parameter depending on the source index and on the state of the corresponding random environment. The novelty of the investigation is the involvement of the random environments, which makes the system rather complicated. The MOSEL tool is used to formulate and solve the problem and the main performance measures are derived and graphically displayed.

Keywords: retrial queueing systems; finite-sources; heterogeneous sources; random environments; performance tools; performance measures; operational research.

DOI: 10.1504/IJOR.2007.012852

International Journal of Operational Research, 2007 Vol.2 No.3, pp.254 - 268

Published online: 19 Mar 2007 *

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