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A Coverage-Preserving Density Control Algorithm Based-on Cooperation in Wireless Sensor Networks

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4 Author(s)
Baiwei Yang ; Dept. of Commun. Eng., Zhengzhou Inf. Sci. & Technol. Inst. ; HongYi Yu ; Hong Li ; Huifeng Hou

Node density control is one of the most important measures to save energy consumption in large wireless sensor networks (WSNs), and it aims to minimize the number of on-duty nodes when maintaining the original network coverage. In this paper, CPSBC, a coverage-preserving self-scheduling protocol is proposed. CPSBC is based on a new sensing model - cooperative sensing model (CSM) other than the traditional Boolean sensing model (BSM), and multi-sensors' cooperative exploration is considered in it. With CPSBC, sensor nodes that have minimum contribution on coverage and satisfy coverage preserving rule meanwhile are scheduled to fall in asleep in each round. It has been verified by simulation that CPSBC can keep the original network coverage with less on-duty nodes than BSM mechanisms, thus results in higher energy efficiency

Published in:

Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on

Date of Conference:

22-24 Sept. 2006