In this paper, we investigate a new type of retrial queueing model with feedback and working breakdown services. The
regular busy server may become defective by disasters (negative customers) at any point of time. Negative customers arrive only
at the service time of a positive customer and remove the positive customer from the service. At the instant of failure, the main
server is sent for repair and the repair period begins immediately. During the repair period, the server gives service at a lower
speed (called working breakdown period). The steady state probability generating function for system size and orbit size are
obtained using the method of supplementary variable. We also obtain some analytic expressions for various performance
measures such as system state probabilities, mean orbit size, and mean system size of this model and some import
Keywords
retrial queue, G queue, feedback, working breakdown services
SONGKLANAKARIN JOURNAL OF SCIENCE & TECHNOLOGY
Published by : Prince of Songkla University Contributions welcome at : http://rdo.psu.ac.th
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