DocumentCode :
2774763
Title :
Energy-efficient data acquisition in wireless sensor networks through spatial correlation
Author :
Xun, Li ; Shiqi, Tang ; Merrett, Geoff V. ; White, Neil M.
Author_Institution :
Sch. of Mechatron. Eng. & Autom., Nat. Univ. of Defense Technol., Changsha, China
fYear :
2011
fDate :
7-10 Aug. 2011
Firstpage :
1068
Lastpage :
1073
Abstract :
The application of Wireless Sensor Networks (WSNs) is restrained by their often-limited lifetime. A sensor node´s lifetime is fundamentally linked to the volume of data that it senses, processes and reports. Spatial correlation between sensor nodes is an inherent phenomenon to WSNs, induced by redundant nodes which report duplicated information. In this paper, we report on the design of a distributed sampling scheme referred to as the `Virtual Sampling Scheme (VSS)´. VSS is formed from two components: an algorithm for forming virtual clusters and a distributed sampling method. VSS primarily utilizes redundancy of sensor nodes to get only a subset to sense the environment at any one time. Sensor nodes that are not sensing the environment are in a low-power sleep state, thus conserving energy. Furthermore, VSS balances the energy consumption amongst nodes by using a round robin method.
Keywords :
correlation methods; data acquisition; sampling methods; wireless sensor networks; distributed sampling method; distributed sampling scheme; energy consumption; energy-efficient data acquisition; network lifetime; round robin method; sensor node lifetime; spatial correlation; virtual cluster; virtual sampling scheme; wireless sensor network; Clustering algorithms; Correlation; Energy conservation; Equations; Mathematical model; Round robin; Wireless sensor networks; Virtual cluster; spatial correlation; wireless sensor networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Mechatronics and Automation (ICMA), 2011 International Conference on
Conference_Location :
Beijing
ISSN :
2152-7431
Print_ISBN :
978-1-4244-8113-2
Type :
conf
DOI :
10.1109/ICMA.2011.5985808
Filename :
5985808
Link To Document :
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