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Probabilistic Coverage Preserving Protocol with Energy Efficiency in Wireless Sensor Networks

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2 Author(s)
Jang-Ping Sheu ; Dept. of Comput. Sci. & Inf. Eng., National Central Univ., Jhongli ; Huang-Fu Lin

In this paper, we propose a k-coverage preserving protocol to achieve energy efficiency while ensuring the required coverage. In our protocol, we try to select a minimal active set of sensor nodes to reach energy conservation and maintain a complete area k-coverage. We model this problem as a minimum set cover problem and solve it by using a heuristic greedy algorithm. Based on the k-coverage preserving protocol, we then propose a protocol to deal with the probabilistic k-coverage requirement, in which each sensor could be assumed to be able to detect a nearby event with a certain probability. In the probabilistic k-coverage protocol, any point in the monitoring region can be sensed by at least k sensor nodes no lower than a confidence probability. Finally, we evaluate the performance of our protocols with simulations.

Published in:

2007 IEEE Wireless Communications and Networking Conference

Date of Conference:

11-15 March 2007