Publication 2005 Issue No. 8 - August Abstract - A Distributed Coverage- and Connectivity-Centric Technique for Selecting Active Nodes in Wireless Sensor Networks
A Distributed Coverage- and Connectivity-Centric Technique for Selecting Active Nodes in Wireless Sensor Networks
August 2005 (vol. 54 no. 8)
pp. 978-991
 ASCII Text x Yi Zou, Krishnendu Chakrabarty, "A Distributed Coverage- and Connectivity-Centric Technique for Selecting Active Nodes in Wireless Sensor Networks," IEEE Transactions on Computers, vol. 54, no. 8, pp. 978-991, August, 2005.
 BibTex x @article{ 10.1109/TC.2005.123,author = {Yi Zou and Krishnendu Chakrabarty},title = {A Distributed Coverage- and Connectivity-Centric Technique for Selecting Active Nodes in Wireless Sensor Networks},journal ={IEEE Transactions on Computers},volume = {54},number = {8},issn = {0018-9340},year = {2005},pages = {978-991},doi = {http://doi.ieeecomputersociety.org/10.1109/TC.2005.123},publisher = {IEEE Computer Society},address = {Los Alamitos, CA, USA},}
 RefWorks Procite/RefMan/Endnote x TY - JOURJO - IEEE Transactions on ComputersTI - A Distributed Coverage- and Connectivity-Centric Technique for Selecting Active Nodes in Wireless Sensor NetworksIS - 8SN - 0018-9340SP978EP991EPD - 978-991A1 - Yi Zou, A1 - Krishnendu Chakrabarty, PY - 2005KW - Index Terms- Coverage and connectivityKW - distributed systemKW - energy efficiencyKW - wireless sensor networks.VL - 54JA - IEEE Transactions on ComputersER -
Due to their low cost and small form factors, a large number of sensor nodes can be deployed in redundant fashion in dense sensor networks. The availability of redundant nodes increases network lifetime as well as network fault tolerance. It is, however, undesirable to keep all the sensor nodes active at all times for sensing and communication. An excessive number of active nodes leads to higher energy consumption and it places more demand on the limited network bandwidth. We present an efficient technique for the selection of active sensor nodes in dense sensor networks. The active node selection procedure is aimed at providing the highest possible coverage of the sensor field, i.e., the surveillance area. It also assures network connectivity for routing and information dissemination. We first show that the coverage-centric active nodes selection problem is {\cal NP}{\hbox{-}}{\rm complete}. We then present a distributed approach based on the concept of a connected dominating set (CDS). We prove that the set of active nodes selected by our approach provides full coverage and connectivity. We also describe an optimal coverage-centric centralized approach based on integer linear programming. We present simulation results obtained using an ns2 implementation of the proposed technique.

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Index Terms:
Index Terms- Coverage and connectivity, distributed system, energy efficiency, wireless sensor networks.
Citation:
Yi Zou, Krishnendu Chakrabarty, "A Distributed Coverage- and Connectivity-Centric Technique for Selecting Active Nodes in Wireless Sensor Networks," IEEE Transactions on Computers, vol. 54, no. 8, pp. 978-991, Aug. 2005, doi:10.1109/TC.2005.123