EBDC: An Energy-Balanced Data Collection Mechanism Using a Mobile Data Collector in WSNs

Sensors

Chih-Yung Chang¹  Chih-Yu Lin² 

[1]Department of Computer Science and Information Engineering, Tamkang University, No. 151, Yingzhuan Road, Tamsui District, New Taipei City 25137, Taiwan

关键词: wireless sensor networks;    data collection;    mobile sink;    energy balancing;   

DOI  :  10.3390/s120505850

来源: mdpi

【 摘 要 】

The data collection problem is one of the most important issues in Wireless Sensor Networks (WSNs). Constructing a tree from all sensor nodes to the sink node is the simplest way, but this raises the problem of energy unbalance since the sensors closer to the sink node would have much higher workloads from relaying data. To cope with the energy unbalance problem, a number of mobile-sink mechanisms have been proposed in recent years. This paper proposes an Energy-Balanced Data Collection mechanism, called EBDC, which determines the trajectory of a mobile data collector (or mobile sink) such that the data-relaying workloads of all sensors can be totally balanced. Theoretical analysis and performance evaluation reveal that the proposed EBDC mechanism outperforms the existing approaches in terms of network lifetime and the degree of energy balancing.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.