Spectrum leasing in cognitive radio networks: a survey

Syed Aqeel Raza, * and Yau, Alvin Kok-Lim * (2014) Spectrum leasing in cognitive radio networks: a survey. International Journal of Distributed Sensor Networks, 2014. pp. 1-22. ISSN 1550-1329

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Official URL: http://dx.doi.org/10.1155/2014/329235

Abstract

Cognitive Radio (CR) is a dynamic spectrum access approach, in which unlicensed users (or secondary users, SUs) exploit the underutilized channels (or white spaces) owned by the licensed users (or primary users, PUs). Traditionally, SUs are oblivious to PUs, and therefore the acquisition of white spaces is not guaranteed. Hence, a SU must vacate its channel whenever a PU reappears on it in an unpredictablemanner,which may affect the SUs’ network performance. Spectrumleasing has been proposed to tackle the aforementioned problem through negotiation between the PU and SU networks, which allows the SUs to acquire white spaces for a guaranteed period of time.Through spectrumleasing, the PUs and SUs enhance their network performances, and additionally PUs maximize their respective monetary gains. Numerous research efforts have been made to investigate the CR, whereas the research into spectrum leasing remains at its infancy. In this paper, we present a comprehensive review on spectrum leasing schemes in CR networks by highlighting some pioneering approaches and discuss the gains, functionalities, characteristics, and challenges of spectrum leasing schemes along with the performance enhancement in CR networks. Additionally, we discuss various open issues in order to spark new interests in this research area.

Item Type: Article
Additional Information: Both authors are with the Department of Computer Science and Networked System,Faculty of Science and Technology, Sunway University
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Sunway University > School of Science and Technology > Dept. Computer Sciences & Networked System
Depositing User: Ms. Molly Chuah
Date Deposited: 01 Apr 2015 02:17
Last Modified: 03 Apr 2015 02:45
URI: http://eprints.sunway.edu.my/id/eprint/254

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