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Spectrum Aware Virtual Coordinates Assignment and Routing in Multihop Cognitive Networks
KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0001-6682-6559
2015 (English)Conference paper (Refereed)
Abstract [en]

We propose Spectrum Aware Virtual Coordinate (SAViC) for multi hop cognitive radio network (CRN) to facilitate geographic routing. The proposed virtual coordinates (VC) of any two secondary users reflect both geographic distance and opportunistic spectrum availability between them. As a result, geographic routing is able to detour the area affected by licensed users or cut through the area with more available spectrum. According to different spectrum occupation patterns of primary user, two versions of SAViC are designed based on the channel utility and primary user’s sojourning time respectively. Simulation shows the proposed virtual coordinate facilitates geographic routing to achieve high success rate of path construction. When duty cycle on the licensed channel is heterogeneous in the network, channel utility based virtual coordinate supports geographic routing to outperform a state-of-the-art geographic routing protocol by 40% on packet delivery ratio. When the channel utility is identical on each secondary node, and the sojourning time of primary users for secondary users are different from each other, SAViC based on primary user’s sojourning time achieves significantly shorter delay than other virtual coordinates.

Place, publisher, year, edition, pages
IFIP , 2015.
National Category
URN: urn:nbn:se:kth:diva-165944ISI: 000380540300047ScopusID: 2-s2.0-84942694091ISBN: 978-3-901882-68-5OAI: diva2:809177
14th IFIP International Conference on Networking 2015 (Networking 2015),20 – 22 May 2015, Toulouse, France
ICT - The Next Generation

Qc 20150618

Available from: 2015-04-30 Created: 2015-04-30 Last updated: 2016-09-02Bibliographically approved

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Gross, James
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Communication Theory

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