Journal
JOURNAL OF SUPERCOMPUTING
Volume 52, Issue 1, Pages 23-46Publisher
SPRINGER
DOI: 10.1007/s11227-009-0268-7
Keywords
Wireless sensor networks; Energy efficient; Connectivity; Coverage; Connected dominating set; Self-scheduling
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Funding
- Kyungnam University Foundation
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One of the main design challenges for wireless sensor networks (WSNs) is to obtain long system lifetime without sacrificing system original performance such as communication connectivity and sensing coverage. A large number of sensor nodes are deployed in redundant fashion in dense sensor networks, which lead to higher energy consumption. We propose a distributed framework for energy efficient connectivity and coverage maintenance in WSNs. In our framework, each sensor makes self-scheduling to separately control the states of RF and sensing unit based on dynamic coordinated reconstruction mechanism. A novel energy-balanced distributed connected dominating set algorithm is presented to make connectivity maintenance; and also a distributed node sensing scheduling is brought forward to maintain the network coverage according to the surveillance requirements. We implemented our framework by C++ programming, and the simulation results show that our framework outperforms several related work by considerably improving the energy performance of sensor networks to effectively extend network lifetime.
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