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| Data Gathering for Long Network Lifetime in WSNs Based on Compressed Sensing |
| Chen Zheng-yu①②③ Yang Geng①② Chen Lei①② Zhou Qiang①② |
①(School of Computer Science and Technology, Nanjing University of Post and Telecommunications, Nanjing 210003, China)
②(Key Laboratory of Broadband Wireless Communication and Sensor Network Technology of Ministry of Education,
Nanjing University of Post and Telecommunications, Nanjing 210003, China)
③(School of Information Technology, Jinling Institute of Technology, Nanjing 211169, China) |
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Abstract For the long-term application requirements of data gathering queries in event-driven Wireless Sensor Networks (WSNs), based on the compressed sensing theory, a data gathering method with long network lifetime is designed by combining the constructing process of data gathering tree with the hybrid compressed sensing data gathering techniques. When a data gathering query arrives, a data gathering tree for the query is constructed. Using the ideas of hybrid compressed sensing, energy consumption of forwarding and aggregating nodes is analyzed, and data gathering trees are constructed aiming at maximizing the minimum residual energy among the nodes after the realization of current data gathering query. The simulation results show that the proposed method can make full use of the energy resources of nodes, significantly improve the network energy efficiency and achieve the goal of extending network lifetime.
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Received: 14 November 2013
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Corresponding Authors:
Chen Zheng-yu
E-mail: zych@jit.edu.cn
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2014, Vol. 36 
