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On-Node Correlation Based Data Reduction in WSN for Smart Agriculture

Abstract : Nowadays, climate change is one of the numerous factors affecting the agricultural sector. Optimizing the usage of natural resources is one of the challenges this sector faces. For this reason, it could be necessary to locally monitor weather data and soil conditions to make faster and better decisions locally adapted to the crop. Wireless sensor networks (WSNs) can serve as a monitoring system for these types of parameters. However, in WSNs, sensor nodes suffer from limited energy resources. The process of sending a large amount of data from the nodes to the sink results in high energy consumption at the sensor node and significant use of network bandwidth, which reduces the lifetime of the overall network. In this paper, for data reduction, a data correlation and prediction technique is proposed both at the sensor node level and at the sink level. The aim of this approach is to reduce the amount of transmitted data to the sink, depending on the degree of correlation between different parameters. In this work we propose the Pearson Data Correlation and Prediction (PDCP) algorithm to detect this correlation. This data reduction maintains the accuracy of the information while reducing the amount of data sent from the nodes to the sink. This approach is validated through simulations on MATLAB using real meteorological data-sets from Weather-Underground sensor network. The results show the validity of our approach by reducing the amount of data by a percentage up to 69% while maintaining the accuracy of the information. The humidity values prediction based on the temperature parameter is accurate and the deviation from the real value does not surpass 7% of humidity.
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Submitted on : Friday, November 20, 2020 - 10:50:42 AM
Last modification on : Wednesday, November 25, 2020 - 3:36:21 AM

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Christian Salim, Nathalie Mitton. On-Node Correlation Based Data Reduction in WSN for Smart Agriculture. IEEE International Conference on Advanced Networks and Telecommunications Systems 2020 (ANTS'20), Dec 2020, Delhi, India. ⟨hal-03016015v1⟩

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