Relay sensor placement in wireless sensor networks
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This paper addresses the following relay sensor placement problem: given the set of duty sensors in the plane and the upper bound of the transmission range, compute the minimum number of relay sensors such that the induced topology by all sensors is globally connected. This problem is motivated by practically considering the tradeoff among performance, lifetime, and cost when designing sensor networks. In our study, this problem is modelled by a NP-hard network optimization problem named Steiner Minimum Tree with Minimum number of Steiner Points and bounded edge length (SMT-MSP). In this paper, we propose two approximate algorithms, and conduct detailed performance analysis. The first algorithm has a performance ratio of 3 and the second has a performance ratio of 2.5.
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- Relay sensor placement in wireless sensor networks
Volume 14, Issue 3 , pp 347-355
- Cover Date
- Print ISSN
- Online ISSN
- Springer US
- Additional Links
- Wireless sensor networks
- Relay sensor
- Steiner point
- Topology control
- Industry Sectors
- Author Affiliations
- 1. Department of Computer Science, The George Washington University, Washington, DC, 20052, USA
- 2. Department of Computer Science, The University of Texas at Dallas, Richardson, TX, 75083, USA
- 3. Department of Computer Science, City University of Hong Kong, Kowloon, Hong Kong
- 4. School of Math. and Computer Science, Nanjing Normal University, 122 Ninghai Road, Nanjing, 210097, P.R. China