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Energy-aware channel selection for cognitive wireless sensor networks
KTH, School of Information and Communication Technology (ICT), Communication: Services and Infrastucture (Closed 20120101), Communication Systems, CoS (closed 2012-01-01). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
2010 (English)In: Proceedings of the 2010 7th International Symposium on Wireless Communication Systems, ISWCS'10, 2010, 892-896 p.Conference paper, Published paper (Refereed)
Abstract [en]

Wireless sensor nodes operating in unlicensed bands can exploit frequency agility in order to mitigate, through dynamic spectrum access, the effects of interference induced by collocated networks. With this respect sensor devices can select the frequency band used for their communications in an opportunistic manner: this however requires spectrum sensing and consumes precious energy when more and more channels are sensed. In this paper we propose an algorithm allowing to limit the overhead introduced by spectrum sensing. We formulate a stochastic control problem which solution allows sensor nodes to decide whether it is better to stop the sensing procedure and transmit on a sensed channel or check a new frequency band hoping to find better interfering conditions. Simulation and experimental results show significant energy gains with respect to previously proposed channel selection algorithms that sense all the available channels.

Place, publisher, year, edition, pages
2010. 892-896 p.
Keyword [en]
Channel selection, Dynamic spectrum access, Energy aware, Energy gain, Sensor device, Spectrum sensing, Stochastic control, Wireless sensor node
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-150061DOI: 10.1109/ISWCS.2010.5624394Scopus ID: 2-s2.0-78650079249ISBN: 978-142446316-9 (print)OAI: oai:DiVA.org:kth-150061DiVA: diva2:742201
Conference
2010 7th International Symposium on Wireless Communication Systems, ISWCS'10, 19 September 2010 through 22 September 2010, York, UK
Note

QC 20140901

Available from: 2014-09-01 Created: 2014-08-29 Last updated: 2014-09-01Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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