On localization with robust power control for safety critical wireless sensor networks

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dc.contributor.author Walsh, Michael
dc.contributor.author Fee, Anthony
dc.contributor.author Barton, John
dc.contributor.author O'Flynn, Brendan
dc.contributor.author Hayes, Martin J.
dc.contributor.author Ó Mathúna, S. Cian
dc.date.accessioned 2012-07-26T09:45:15Z
dc.date.available 2012-07-26T09:45:15Z
dc.date.issued 2011-02
dc.identifier.citation Walsh, Michael; Fee, Anthony; Barton, John; O'Flynn, Brendan; Hayes, Martin; Ó Mathúna, S. Cian (2011) 'On localization with robust power control for safety critical wireless sensor networks'. Journal of Control Theory and Applications, 9 (11):83-92. doi: 10.1007/s11768-011-0253-6 en
dc.identifier.volume 9 en
dc.identifier.issued 11 en
dc.identifier.startpage 83 en
dc.identifier.endpage 92 en
dc.identifier.issn 1672-6340
dc.identifier.uri http://hdl.handle.net/10468/643
dc.identifier.doi 10.1007/s11768-011-0253-6
dc.description.abstract A hybrid methodology is proposed for use in low power, safety critical wireless sensor network applications, where quality-of-service orientated transceiver output power control is required to operate in parallel with radio frequency-based localization. The practical implementation is framed in an experimental procedure designed to track a moving agent in a realistic indoor environment. An adaptive time synchronized approach is employed to ensure the positioning technique can operate effectively in the presence of dataloss and where the transmitter output power of the mobile agent is varying due to power control. A deterministic multilateration-based positioning approach is adopted and accuracy is improved by filtering signal strength measurements overtime to account for multipath fading. The location estimate is arrived at by employing least-squares estimation. Power control is implemented at two separate levels in the network topology. First, power control is applied to the uplink between the tracking reference nodes and the centralized access point. A number of algorithms are implemented highlighting the advantage associated with using additional feedback bandwidth, where available, and also the need for effective time delay compensation. The second layer of power control is implemented on the uplink between the mobile agent and the access point and here quantifiable improvements in quality of service and energy efficiency are observed. The hybrid paradigm is extensively tested experimentally on a fully compliant 802.15.4 testbed, where mobility is considered in the problem formulation using a team of fully autonomous robots.A hybrid methodology is proposed for use in low power, safety critical wireless sensor network applications, where quality-of-service orientated transceiver output power control is required to operate in parallel with radio frequency-based localization. The practical implementation is framed in an experimental procedure designed to track a moving agent in a realistic indoor environment. An adaptive time synchronized approach is employed to ensure the positioning technique can operate effectively in the presence of dataloss and where the transmitter output power of the mobile agent is varying due to power control. A deterministic multilateration-based positioning approach is adopted and accuracy is improved by filtering signal strength measurements overtime to account for multipath fading. The location estimate is arrived at by employing least-squares estimation. Power control is implemented at two separate levels in the network topology. First, power control is applied to the uplink between the tracking reference nodes and the centralized access point. A number of algorithms are implemented highlighting the advantage associated with using additional feedback bandwidth, where available, and also the need for effective time delay compensation. The second layer of power control is implemented on the uplink between the mobile agent and the access point and here quantifiable improvements in quality of service and energy efficiency are observed. The hybrid paradigm is extensively tested experimentally on a fully compliant 802.15.4 testbed, where mobility is considered in the problem formulation using a team of fully autonomous robots. en
dc.description.sponsorship Science Foundation Ireland (CSET - Centre for Science, Engineering and Technology, grant 07/CE/I1147); Science Foundation Ireland (ITOBO (398-CRP)) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher South China University of Technology and Academy of Mathematics and Systems Science, CAS. Springer-Verlag en
dc.rights ©South China University of Technology and Academy of Mathematics and Systems Science, CAS and Springer-Verlag Berlin Heidelberg 2011. The original publication is available at www.springerlink.com. en
dc.subject Power control en
dc.subject Localization en
dc.subject.lcsh Wireless sensor networks en
dc.title On localization with robust power control for safety critical wireless sensor networks en
dc.title.alternative On localisation with robust power control for safety critical wireless sensor networks en
dc.type Article (peer-reviewed) en
dc.internal.authorurl http://www.tyndall.ie en
dc.internal.authorcontactother Brendan O'Flynn, Tyndall Microsystems, University College Cork, Cork, Ireland. +353-21-490-3000 Email: brendan.oflynn@tyndall.ie en
dc.internal.availability Full text available en
dc.date.updated 2012-07-26T09:34:21Z
dc.description.version Accepted Version en
dc.internal.rssid 157389742
dc.internal.rssid 483475665
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Control Theory and Applications en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress cian.omathuna@tyndall.ie en
dc.internal.IRISemailaddress brendan.oflynn@tyndall.ie
dc.relation.project 07 CE I1147
dc.relation.project 07 CE I1147


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