• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

A Novel Prediction-based Spectrum Allocation Mechanism for Mobile Cognitive Radio Networks

Vol. 7, No.9, September 30, 2013
10.3837/tiis.2013.09.002, Full Text:

Abstract

The spectrum allocation is an attractive issue for mobile cognitive radio (CR) network. However, the time-varying characteristic of the spectrum allocation is not fully investigated. Thus, this paper originally deduces the probabilities of spectrum availability and interference constrain in theory under the mobile environment. Then, we propose a prediction mechanism of the time-varying available spectrum lists and the dynamic interference topologies. By considering the node mobility and primary users’ (PUs’) activity, the mechanism is capable of overcoming the static shortcomings of traditional model. Based on the mechanism, two prediction-based spectrum allocation algorithms, prediction greedy algorithm (PGA) and prediction fairness algorithm (PFA), are presented to enhance the spectrum utilization and improve the fairness. Moreover, new utility functions are redefined to measure the effectiveness of different schemes in the mobile CR network. Simulation results show that PGA gets more average effective spectrums than the traditional schemes, when the mean idle time of PUs is high. And PFA could achieve good system fairness performance, especially when the speeds of cognitive nodes are high.


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Cite this article

[IEEE Style]
Yao Wang, Zhongzhao Zhang, Qiyue Yu and Jiamei Chen, "A Novel Prediction-based Spectrum Allocation Mechanism for Mobile Cognitive Radio Networks," KSII Transactions on Internet and Information Systems, vol. 7, no. 9, pp. 2101-2119, 2013. DOI: 10.3837/tiis.2013.09.002

[ACM Style]
Wang, Y., Zhang, Z., Yu, Q., and Chen, J. 2013. A Novel Prediction-based Spectrum Allocation Mechanism for Mobile Cognitive Radio Networks. KSII Transactions on Internet and Information Systems, 7, 9, (2013), 2101-2119. DOI: 10.3837/tiis.2013.09.002