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Admission control and scheduling in simple series parallel networks

Yannis Phillis, Runtong Zhang

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URI: http://purl.tuc.gr/dl/dias/C5488BDB-5ED2-4F5D-942E-465E9C4363CE
Year 2001
Type of Item Peer-Reviewed Journal Publication
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Bibliographic Citation R. Zhang and Y. A. Phillis, "Admission control and scheduling in simple series parallel networks," IEEE Trans. on Fuzzy Sys., vol. 9, no. 2, pp. 307-314, 2001.doi : 10.1109/91.919251 https://doi.org/ 10.1109/91.919251
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Summary

Two outstanding problems of admission control and scheduling in networks with three and two workstations, respectively, are solved using fuzzy logic. Neither problem has been tackled up until now analytically, whereas the fuzzy approach provides computational solutions. In the first case, we have one workstation with two parallel ones. A reward is earned whenever the first stage accepts a customer and a holding cost is incurred by a customer in queue in the second stage. The class of customer to be next served by the first stage is dynamically selected so as to maximize an average benefit over an infinite horizon. In the second case, there are two parallel servers and three arrival processes generated by independent Poisson streams. Each server has its own queue and receives customers from its own arrival stream. A third arrival stream consists of customers with resource demand on both servers. Each customer pays a holding cost per unit time in the system. Again, the scheduling policy is specified which minimizes the average cost. The fuzzy models are new in this context and tackle computationally problems for which we have not analytical solutions

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