Lifetime and Buffer-Size Optimization for RF Powered Wireless Sensor Networks

Bikrant Koirala, Keshav Dahal

Abstract

Radio Frequency-Energy Harvesting (RF-EH) system usually incorporates ‘harvest-store-use’ mechanism, i.e. the harvested RF energy is first stored in an energy buffer and when the stored energy level is sufficient enough to power an application it is then supplied to the device. To improve the network’s performance in terms of lifetime and buffer capacity, it is crucial to develop a model for RF powered Wireless Sensor Networks (WSNs), which considers source-load relations, buffer size and ambient conditions within the context of Energy Neutral Operation (ENO) and minimum energy wastage. In this paper, we propose a model for RF powered WSNs that makes use of available RF energy with variations in maximum and minimum energy levels for two different worst case scenarios encompassing ENO and buffer requirements. We develop an algorithm based on the proposed model to find the optimum energy consumption rate of each sensor nodes that would ensure maximum lifetime of the WSN with minimum buffer capacity. We verified our approach by comparing the results with all other possible consumption rates. We also performed a comparative analysis to find the effect of available RF energy fluctuation in the individual sensor nodes’ lifetime.

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Paper Citation


in Harvard Style

Koirala B. and Dahal K. (2019). Lifetime and Buffer-Size Optimization for RF Powered Wireless Sensor Networks.In Proceedings of the 8th International Conference on Sensor Networks - Volume 1: SENSORNETS, ISBN 978-989-758-355-1, pages 102-107. DOI: 10.5220/0007393901020107


in Bibtex Style

@conference{sensornets19,
author={Bikrant Koirala and Keshav Dahal},
title={Lifetime and Buffer-Size Optimization for RF Powered Wireless Sensor Networks},
booktitle={Proceedings of the 8th International Conference on Sensor Networks - Volume 1: SENSORNETS,},
year={2019},
pages={102-107},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007393901020107},
isbn={978-989-758-355-1},
}


in EndNote Style

TY - CONF

JO - Proceedings of the 8th International Conference on Sensor Networks - Volume 1: SENSORNETS,
TI - Lifetime and Buffer-Size Optimization for RF Powered Wireless Sensor Networks
SN - 978-989-758-355-1
AU - Koirala B.
AU - Dahal K.
PY - 2019
SP - 102
EP - 107
DO - 10.5220/0007393901020107