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Energy-aware exploitation of white spaces in the time domain for wireless sensor networks
KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikation: Infrastruktur och tjänster (Stängd 20120101), Kommunikationssystem, CoS (stängd 2012-01-01). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
2010 (engelsk)Inngår i: Proceedings of the 2010 7th International Symposium on Wireless Communication Systems, ISWCS'10, 2010, s. 981-985Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Low power communications of sensor nodes operating in unlicensed bands are easily corrupted by transmissions of collocated wireless terminals whose interference can induce packet losses and consequently increase energy consumption of sensor devices. Dynamic spectrum access mechanisms can mitigate these problems however the energy aware design of these access schemes is a challenging task. In this paper we consider an energy constrained system comprising two sensor nodes that avoid interference by exploiting spectrum opportunities in the time domain. Using the distributions of idle period duration obtained during a measurement campaign we show how it is possible to design the access scheme deployed by sensors in an energy efficient manner. We compare different spectrum sensing strategies, showing that per-packet sensing results in significant energy overhead. We further provide a way for dimensioning the size of transmitted packets. Simulation results show that our approach outperforms other access strategies and allows to reduce energy consumption of 20 to 90 percent depending on channel conditions.

sted, utgiver, år, opplag, sider
2010. s. 981-985
Emneord [en]
Access schemes, Channel conditions, Dynamic spectrum access, Energy aware, Energy consumption, Energy efficient, Energy-aware design, Energy-constrained, Low-power communication, Measurement campaign, Sensor device, Simulation result, Spectrum sensing, Time domain, White space, Wireless terminals
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-150062DOI: 10.1109/ISWCS.2010.5624387Scopus ID: 2-s2.0-78650078283ISBN: 978-142446316-9 (tryckt)OAI: oai:DiVA.org:kth-150062DiVA, id: diva2:742199
Konferanse
2010 7th International Symposium on Wireless Communication Systems, ISWCS'10, 19 September 2010 through 22 September 2010, York, United Kingdom
Merknad

QC 20140901

Tilgjengelig fra: 2014-09-01 Laget: 2014-08-29 Sist oppdatert: 2014-09-01bibliografisk kontrollert

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