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Wireless Personal Communications
Published in: Wireless Personal Communications 2/2013

01-09-2013

Network Performance Optimization in Constrained Queueing Systems

Authors: Di Wu, Gang Zhu, Bo Ai

Published in: Wireless Personal Communications | Issue 2/2013

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Abstract

Most of literature assumed infinite buffer for users, which, however, is not practical in real networks. In this paper, we investigate downlink resource scheduling with constrained queueing. We first formulate an optimization model with the objective of maximizing the system rate under a limited queue length. Then two scheduling methods are proposed to solve this problem. One scheme is based on a virtual alarming threshold; the other is a prediction-based scheme. However, they still suffer from unfairness among rate allocations. To improve performance with respect to rate fairness, the factor of rate fairness is introduced into this optimization formulation finally. Numerical results are presented to demonstrate the efficiency of the proposed scheduling methods in terms of average system rate, maximum queue length and rate fairness, compared to some existing methods.
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Appendix
Available only for authorised users
Footnotes
1
The number of future slots to be used for prediction depends on the accuracy of employed channel prediction methods (like Refs. [12, 13]) and the correlation coefficient between the predicted and actual channels [14].
 
2
Although we here assume that the number of future slots is fixed, results can be easily adjusted to different number of future slots, which is determined by the specific channel prediction method.
 
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Shakkottai, S., Rappaport, T. S., & Karlsson, P. C. (2003). Cross layer design for wireless networks. IEEE Communications Magazine, 41, 74–80.CrossRef
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Tassiulas, L., & Ephremides, A. (1992). Stability properties of constrained queueing systems and scheduling policies for maximum throughput in multihop radio networks. IEEE Transactions on Automatic Control, 37, 1936–1948.MathSciNetMATHCrossRef
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Salem, M., Adinoyi, A., Yanikomeroglu, H., & Falconer, D. (2011). Fair resource allocation toward ubiquitous coverage in OFDMA-based cellular relay networks with asymmetric traffic. IEEE Transactions on Vehicular Technology, 60, 2280–2292.CrossRef
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Metadata
Title
Network Performance Optimization in Constrained Queueing Systems
Authors
Di Wu
Gang Zhu
Bo Ai
Publication date
01-09-2013
Publisher
Springer US
Published in
Wireless Personal Communications / Issue 2/2013
Print ISSN: 0929-6212
Electronic ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-013-1053-8

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