A discrete time two-level mixed service parallel polling model |
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Authors: | Zheng Guan Dongfeng Zhao Yifan Zhao |
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Affiliation: | 1. School of Information Science & Technology, Yunnan University, Kunming, 650091, China
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Abstract: | We present a discrete time single-server two-level mixed service polling systems with two queue types, one center queue and N normal queues. Two-level means the center queue will be successive served after each normal queue. In the first level, server visits between the center queue and the normal queue. In the second level, normal queues are polled by a cyclic order. Mixed service means the service discipline are exhaustive for center queue, and parallel 1-limited for normal queues. We propose an imbedded Markov chain framework to drive the closed-form expressions for the mean cycle time, mean queue length, and mean waiting time. Numerical examples demonstrate that theoretical and simulation results are identical the new system efficiently differentiates priorities. |
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Keywords: | Key words Polling model Priority Two-level Mixed-service Waiting time |
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