This paper considers the periodical top–k query for wireless sensors, where a sink periodically seeks top–k values and corresponding nodes–IDs in a sensing field. We advocate applying wake–up receivers in this scenario in order to reduce the wasteful energy consumption of sensor nodes. A wake–up control is proposed for the sink to collect top–k data with temporal correlation with small amount of energy. Specifically, the proposed scheme employs different types of wake–up control, which aims to wake up only the subset of nodes whose owning data contribute to the identification of current top–k set by exploiting temporal correlation. The numerical results confirm the effectiveness of our proposed scheme compared with the conventional wake–up control for top–k query in terms of average energy consumption, especially when the degree of correlation is high.
Wake–up Control for Wireless Sensor Networks Collecting top–k Data with Temporal Correlation
2020-11-01
1157725 byte
Conference paper
Electronic Resource
English
EQUIPMENT MONITORING DEVICE, WIRELESS SENSOR, AND COLLECTING STATION
European Patent Office | 2017
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