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2009-08-25Konferenzveröffentlichung DOI: 10.1109/MESH.2009.35
The Challenges of using Wireless Mesh Networks for Earthquake Early Warning Systems
dc.contributor.authorNachtigall, Jens
dc.contributor.authorZubow, Anatolij
dc.contributor.authorSombrutzki, Robert
dc.contributor.authorPicozzi, Matteo
dc.date.accessioned2017-06-17T01:16:43Z
dc.date.available2017-06-17T01:16:43Z
dc.date.created2009-11-27
dc.date.issued2009-08-25
dc.identifier.isbn978-0-7695-3667-5
dc.identifier.urihttp://edoc.hu-berlin.de/18452/10148
dc.description.abstractThe total cost of an earthquake early warning system (EEWS) can be substantially decreased by using wireless mesh networks (WMNs), which are inexpensive computer networks whose nodes communicate wirelessly using a license-free spectrum in a self-organized manner. The early warning system triggers on the small-amplitude, but fast P-wave in order to shutdown critical infrastructures before the destructive, but slow S-waves arrive only a few seconds later. It demands low-latency communications of high robustness. We conducted shakeboard-based measurements using IEEE 802.11a/b. Innovatively, our tests show that already for the slight shaking related to P-waves representative for strong (Mw > 6) and nearby (epicentral distance < 40 km) earthquakes, the performance of the wireless communications can be considerably affected at the very moment when the Early Warning system is supposed to be used. We observed swift link quality oscillations of up to 10 dB within only half a second. The more an environment is vulnerable to multi-path interference and shadow fading, e.g. no line of sight (NLOS), the more erratic are the wireless links between nodes. However, for clear line of sight (LOS) the influence of the vibrations is negligible. We recommend several measures that should be applied in order to make the unique use case of Earthquake Early Warning, nonetheless, well-functioning on top of a wireless mesh network. A higher fade margin, in our setup at least an additional 5 dB, should be included to cope with sudden link fading. Moreover, antenna diversity should be enabled as it strongly mitigates the adverse effects of shaking.eng
dc.language.isoeng
dc.publisherHumboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II
dc.subjectWireless Mesh Networkseng
dc.subjectEarthquake Early Warning Systemseng
dc.subjectMeasurementseng
dc.subject.ddc550 Geowissenschaften
dc.subject.ddc004 Informatik
dc.titleThe Challenges of using Wireless Mesh Networks for Earthquake Early Warning Systems
dc.typeconferenceObject
dc.identifier.urnurn:nbn:de:kobv:11-100102716
dc.identifier.doi10.1109/MESH.2009.35
dc.identifier.doihttp://dx.doi.org/10.18452/9496
local.edoc.container-titleMESH '09: Proceedings of the Second International Conference on Advances in Mesh Networks
local.edoc.container-titleMESH '09: Proceedings of the Second International Conference on Advances in Mesh Networks
local.edoc.container-titleMESH '09: Proceedings of the Second International Conference on Advances in Mesh Networks
local.edoc.fp-subtypepaper
local.edoc.type-nameKonferenzveröffentlichung
local.edoc.institutionMathematisch-Naturwissenschaftliche Fakultät II
local.edoc.container-typeconference
local.edoc.container-type-nameKonferenz
local.edoc.container-urlhttp://www.ieee.org
local.edoc.container-publisher-nameInstitute of Electrical and Electronics Engineers (IEEE)
local.edoc.container-eventMESH 09: Proceedings of the Second International Conference on Advances in Mesh Networks, 2009, pp 155-162, MESH 09: Proceedings of the Second International Conference on Advances in Mesh Networks, Athens, Greece, 18.06.2009 - 23.06.2009
local.edoc.container-year2009
local.edoc.container-firstpage155
local.edoc.container-lastpage162
dc.description.versionPeer Reviewed

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