Journal
JOURNAL OF NETWORK AND COMPUTER APPLICATIONS
Volume 35, Issue 2, Pages 619-632Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jnca.2011.11.016
Keywords
Wireless sensor networks; Coverage; Connectivity; Deployment strategy; Sleep scheduling mechanism
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Funding
- Fundamental Research Funds for the Central Universities [2010822914, 2010B22814, 2010B24414]
- Jiangsu Key Laboratory Of Power Transmission 82 Distribution Equipment Technology [2010JSSPD04]
- Ministry of Education, Culture, Sports, Science and Technology, Japan [21220002]
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A wireless sensor network (WSN) is composed of a group of small power-constrained nodes with functions of sensing and communication, which can be scattered over a vast region for the purpose of detecting or monitoring some special events. The first challenge encountered in WSNs is how to cover a monitoring region perfectly. Coverage and connectivity are two of the most fundamental issues in WSNs, which have a great impact on the performance of WSNs. Optimized deployment strategy, sleep scheduling mechanism, and coverage radius cannot only reduce cost, but also extend the network lifetime. In this paper, we classify the coverage problem from different angles, describe the evaluation metrics of coverage control algorithms, analyze the relationship between coverage and connectivity, compare typical simulation tools, and discuss research challenges and existing problems in this area. (C) 2011 Elsevier Ltd. All rights reserved.
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