Optimal Admission and Price Control in a Retrial Queueing System
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摘要
In this paper, we analyze the optimal control policy to minimize the average costs in a retrial queueing system. At any decision epoch, the manager uses admission probabilities a's to control the arriving customers and determines a cancellation price c for the unsuccessful retrial customer, which will lead to him out of system with the probability of G(c) otherwise back to the orbit. We cast the problem as a Markov decision process and derive that the optimal policy has a pure threshold form. We also show that the two thresholds are monotonic in system parameters. Furthermore, based on the structure of the optimal policy,we construct a performance evaluation model for computing efficiently the optimal thresholds. The expression of the average cost is given by solving the quasi-birth-death(QBD) process. Finally, some numerical experiments are presented to illustrate the effect of the system parameters on the optimal policy.
In this paper, we analyze the optimal control policy to minimize the average costs in a retrial queueing system. At any decision epoch, the manager uses admission probabilities a's to control the arriving customers and determines a cancellation price c for the unsuccessful retrial customer, which will lead to him out of system with the probability of G(c) otherwise back to the orbit. We cast the problem as a Markov decision process and derive that the optimal policy has a pure threshold form. We also show that the two thresholds are monotonic in system parameters. Furthermore, based on the structure of the optimal policy,we construct a performance evaluation model for computing efficiently the optimal thresholds. The expression of the average cost is given by solving the quasi-birth-death(QBD) process. Finally, some numerical experiments are presented to illustrate the effect of the system parameters on the optimal policy.
引文
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