Release Time:2019-03-13  Hits:

Indexed by: Journal Article

Date of Publication: 2016-07-01

Journal: IEEE SENSORS JOURNAL

Included Journals: EI、SCIE

Volume: 16

Issue: 13

Page Number: 5471-5480

ISSN: 1530-437X

Key Words: Clustering; energy efficiency; average entropy; random update; wireless sensor networks

Abstract: This paper presents an energy-efficient clustering method using random update (EECRU) for wireless sensor networks. We divide the network into preliminary clusters depending on the temporal and spatial correlation of sensor data. These clusters are then updated by applying a dynamic update policy and a cluster head rotation scheme, where the change of sensor data and the energy residue of sensors are taken into consideration to achieve high energy efficiency and balance. The larger the change rate of the sensor data in a cluster, the higher its update frequency. A sensor node that has a high data frequency is more likely to be selected as the head of its cluster. In the data transmission phase, a sampling rate control method is adopted to improve the efficiency of data sampling. The experimental results indicate that the proposed EECRU method achieves high energy efficiency and energy balance.