# American Institute of Mathematical Sciences

July  2011, 7(3): 767-788. doi: 10.3934/jimo.2011.7.767

## Frame-bound priority scheduling in discrete-time queueing systems

 1 SMACS Research Group, Ghent University, St.-Pietersnieuwstraat 41, 9000 Gent, Belgium, Belgium, Belgium, Belgium

Received  September 2010 Revised  May 2011 Published  June 2011

A well-known problem with priority policies is starvation of delay-tolerant traffic. Additionally, insufficient control over delay differentiation (which is needed for modern network applications) has incited the development of sophisticated scheduling disciplines. The priority policy we present here has the benefit of being open to rigorous analysis. We study a discrete-time queueing system with a single server and single queue, in which $N$ types of customers enter pertaining to different priorities. A general i.i.d. arrival process is assumed and service times are generally distributed. We divide the time axis into 'frames' of fixed size (counted as a number of time-slots), and reorder the customers that enter the system during the same frame such that the high-priority customers are served first. This paper gives an analytic approach to studying such a system, and in particular focuses on the system content (meaning the customers of each type in the system at random slotmarks) in stationary regime, and the delay distribution of a random customer. Clearly, in such a system the frame's size is the key factor in the delay differentiation between the $N$ priority classes. The numerical results at the end of this paper illustrate this observation.
Citation: Sofian De Clercq, Koen De Turck, Bart Steyaert, Herwig Bruneel. Frame-bound priority scheduling in discrete-time queueing systems. Journal of Industrial & Management Optimization, 2011, 7 (3) : 767-788. doi: 10.3934/jimo.2011.7.767
##### References:
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##### References:
 [1] D. A. Bini, G. Latouche and B. Meini, "Numerical Methods for Structured Markov Chains,", Numerical Mathematics and Scientific Computation, (2005).   Google Scholar [2] H. Bruneel, Performance of Discrete-Time Queueing Systems,, Computers Operations Research, 20 (1993), 303.  doi: 10.1016/0305-0548(93)90006-5.  Google Scholar [3] S. De Clercq, B. Steyaert and H. Bruneel, Analysis of a Multi-Class Discrete-time Queueing System under the Slot-Bound Priority rule,, Proceedings of the 6th St. Petersburg Workshop on Simulation, (2009), 827.   Google Scholar [4] S. De Vuyst, S. Wittevrongel and H. Bruneel, A queueing discipline with place reservation,, Proceedings of the COST 279 Eleventh Management Committee Meeting (Ghent, (2004), 23.   Google Scholar [5] H. R. Gail, S. L. Hantler and B. A. Taylor, Spectral Analysis of $M$/$G$/$1$ and $G$/$M$/$1$ Type Markov chains,, Advances in Applied Probability, 28 (1996), 114.  doi: 10.2307/1427915.  Google Scholar [6] R. G. Gallager, "Discrete Stochastic Processes,", Kluwer Academic Publishers, (1996).   Google Scholar [7] S. Halfin, Batch Delays Versus Customer Delays,, The Bell System Technical Journal, 62 (1983), 2011.   Google Scholar [8] L. Kleinrock, "Queueing Systems, Volume I: Theory,", Wiley, (1975).   Google Scholar [9] V. Klimenok, On the modification of Rouche's theorem for queueing theory problems,, Queueing Systems, 38 (2001), 431.  doi: 10.1023/A:1010999928701.  Google Scholar [10] K. Y. Liu, D. W. Petr, V. S. Frost, H. B. Zhu, C. Braun and W. L. Edwards, Design and analysis of a bandwidth management framework for ATM-based broadband ISDN,, IEEE Communications Magazine, 35 (1997), 138.  doi: 10.1109/35.592108.  Google Scholar [11] M. F. Neuts, "Structured Stochastic Matrices of $M$/$G$/$1$ Type and Their Applications,", Probability: Pure and Applied, 5 (1989).   Google Scholar [12] I. Stavrakakis, Delay bounds on a queueing system with consistent priorities,, IEEE Transactions on Communications, 42 (1994), 615.  doi: 10.1109/TCOMM.1994.577089.  Google Scholar [13] H. Takada and K. Kobayashi, Loss Systems with Multi-Thresholds on Network Calculus,, Proc. of Queueing Symposium, (2007), 241.   Google Scholar [14] J. Walraevens, B. Steyaert and H. Bruneel, Performance analysis of the system contents in a discrete-time non-preemptive priority queue with general service times,, Belgian Journal of Operations Research, 40 (2000), 91.   Google Scholar [15] H. S. Wilf, "Generatingfunctionology,", 2nd edition, (1994).   Google Scholar
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