Abstract
In this paper, performance of opportunistic scheduling (OS) in wireless multimedia and data networks is studied based on popular stochastic network calculus (SNC). For this purpose, we firstly bound traffic arrival process by using exponentially bounded burstiness (EBB) traffic model of SNC and establish stochastic arrival curve. Then we propose a new wireless opportunistic scheduling-Modified Proportional Fairness (MPF) scheduling algorithm which can provide better fairness for input traffic to guarantee quality of service (QoS) performance and obtain stochastic service curve. Compared with traditional Round-Robin (RR), Greedy (GY) and Proportional Fairness (PF) scheduling algorithms, MPF scheduling algorithm can get better equilibrium between delay and backlog. More specifically, our MPF scheduling algorithm can provide better fairness and QoS by introducing a weighted factor to identify user’s priority. On the other hand, the framework based on SNC also provides higher utilization of network resource and statistical meanings for delay and backlog, so MPF can schedule input traffic effectively as long as the input traffic satisfies some bounded conditions. The numerical results show that our stochastic model and MPF scheduling algorithm can provide better QoS performance.
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Acknowledgements
The authors would like to thank the anonymous reviewers for the careful reading of the original manuscript. Their comments and suggestions have led to a much better presentation of the paper. This research is supported in part by the National Natural Science Foundation of China under Grant Nos. 61063045, 61262003 and 61103245, in part by the Natural Science Foundation of Guangxi Province under Grant No.2010GXNSFC013013.
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Wang, G., Wang, N., Yu, X. et al. Performance analysis of opportunistic scheduling in wireless multimedia and data networks using stochastic network calculus. Multimed Tools Appl 74, 25–41 (2015). https://doi.org/10.1007/s11042-013-1448-2
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DOI: https://doi.org/10.1007/s11042-013-1448-2