Title: Economic model for routing and spectrum management in cognitive wireless mesh network

Authors: Ayoub Alsarhan; Ahmad Al-Khasawneh; Awni Itradat; Mohammad Bsoul

Addresses: Department of Computer Information System, Prince Hussein Bin Abdullah II for Information Technology, Hashemite University, P.O. Box 150459, Zarqa 13115, Jordan ' Department of Computer Information System, Prince Hussein Bin Abdullah II for Information Technology, Hashemite University, P.O. Box 150459, Zarqa 13115, Jordan ' Department of Computer Engineering, Faculty of Engineering, Hashemite University, P.O. Box 150459, Zarqa 13115, Jordan ' Department of Computer Science, Prince Hussein Bin Abdullah II for Information Technology, Hashemite University, P.O. Box 150459, Zarqa 13115, Jordan

Abstract: In cognitive radio networks (CRNs), unlicensed users (secondary users - SUs) lease free spectrum with quality of service (QoS) guarantees from a multitude of spectrum owners (primary users, PUs) based on service level agreements (SLA). Free spectrum is used to establish the links of secondary network. The amount of leased spectrum influences the admitted number of SU's requests, PUs' profits, and the cost of renting spectrum. Hence, the PU can maximise its profit by adapting its resources to the changes in the traffic load and SLA costs conditions. We propose a novel approach that maximises PU's profit using economic model. Our economic model integrates the network routing with the adaptation of the capacity of secondary network links. For SUs, QoS should be maintained while adapting the secondary network capacity. Our adaptation scheme is based on the profit maximisation. The Markov decision process (MDP) is used to derive the adaption scheme. Numerical results show the ability of the proposed scheme to attain the optimal profit under different conditions and constraints.

Keywords: cognitive radio networks; CRN; spectrum resource management; economic modelling; Markov decision process; MDP; wireless networks; routing; spectrum management; cognitive networks; wireless mesh networks; WMNs; primary users; secondary users; level agreements; SLAs; profit maximisation.

DOI: 10.1504/IJNVO.2013.057281

International Journal of Networking and Virtual Organisations, 2013 Vol.12 No.4, pp.331 - 351

Received: 13 Apr 2013
Accepted: 23 Jul 2013
Published online: 31 Mar 2014 *

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