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| description |
In this paper we introduce a novel scenario for environmental
sensing based on the combination of simple and cheap RFID-based
sensors and mobile devices like mobile phones with integrated RFID
readers. We envision a system, where the mobile nodes cooperatively
read sensors installed in the environment as they pass by and
transmit the data to a server infrastructure. To achieve quality
requirements on the one hand, and on the other hand efficiency in
terms of communication cost and energy consumption, this paper
presents several algorithms for coordinating update operations.
Mobile nodes form an ad-hoc network for the cooperative management
of requested update times to meet the desired update interval and to
avoid redundant sensor reading and collisions during read
operations. Besides this decentralized coordination algorithm, we
also show a complementary algorithm that exploits infrastructure
based coordination. By extensive simulations we show that our
algorithms achieve a high quality of sensor updates where nearly
100% of the possible updates are performed. Moreover, the algorithms
achieve a very high energy efficiency allowing for several hundred
hours of operation assuming a typical battery of a mobile phone.
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| publisher |
University of Stuttgart : Collaborative Research Center SFB 627
(Nexus: World Models for Mobile Context-Based
Systems)
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| Taipei, Taiwan: IEEE Computer Society Conference Publishing
Services
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| type |
Text
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| Article in Proceedings
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| source |
In: Proceedings of the 10th International Conference on Mobile Data
Management (MDM'09); Taipei, Taiwan, Mai 18-20, 2009, pp. 1-10
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| contributor |
Institut für Parallele und Verteilte Systeme, Verteilte
Systeme
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| subject |
Computer-Communication Networks (CR C.2)
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| ad-hoc
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| mobile
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| RFID-sensor
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| urban sensing
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