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Improving accuracy of the Shewhart-based data-reduction in IoT nodes using piggybacking

Shastri, Anish; Jain, Vivek; Chaudhari, Sachin; Cohan, Shailesh Singh; Werner, Stefan
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Shastri (689.1Kb)
Permanent lenke
http://hdl.handle.net/11250/2624918
Utgivelsesdato
2019
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  • Institutt for elektroniske systemer [1575]
  • Publikasjoner fra CRIStin - NTNU [21866]
Originalversjon
10.1109/WF-IoT.2019.8767321
Sammendrag
This paper proposes the use of Shewhart test to reduce the number of data-transmissions in IoT networks. It is shown to outperform the widely-used least mean square (LMS) based data reduction method in terms of the number of data-transmissions, implementation complexity and mean square error (MSE) in prediction of time-series data at the sink node based on the partial transmissions of the measured time-series data from the sensor node. The paper also proposes the use of piggybacking and interpolation to further reduce the MSE of the estimated time-series data at the sink node without increasing the number of packet transmissions. The time-series data used for the comparison of data reduction algorithms is a set of measured temperature values in indoor and outdoor scenarios for four days using custom-designed wireless sensor nodes. To express the effectiveness of the piggybacked transmissions on battery lifetime, the total current consumption of the sensor node is measured for different number of piggybacks and corresponding battery lifetime is estimated. It is shown that the proposed piggyback approach significantly reduces the MSE at the cost of slight decrease in battery-lifetime.
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Institute of Electrical and Electronics Engineers (IEEE)

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