NDLI: Optimal policies for two-user energy harvesting device networks with imperfect state-of-charge knowledge

Content Provider	IEEE Xplore Digital Library
Author	Del Testa, D. Zorzi, M.
Copyright Year	2014
Description	Author affiliation: Dept. of Inf. Eng., Univ. of Padova, Padua, Italy (Del Testa, D.; Zorzi, M.)
Abstract	Energy Harvesting Devices (EHDs) are enjoying continuously increasing popularity in Wireless Sensor Network research, due to their ability to “harvest” energy from the environment, thus allowing long-term and autonomous operation. Traditional approaches generally assume that the exact energy value of the State-of-Charge (SOC) of an EHD is known. In reality, batteries are practically composed by electro-chemical rechargeable elements or super-capacitors, where the estimation of the energy levels is a complex task. In this paper, we analyze operation policies able to maximize the long-term reward for a network consisting of a pair of EHDs and a central controller (CC), under imperfect knowledge of the SOC. More precisely, we suppose that the CC only knows whether each EHD is “LOW” or ”HIGH,”and has to determine the amount of energy devoted to the transmission over a shared wireless channel. We show that the performance degradation due to the imperfect knowledge of the SOC decreases with the battery capacity of the two nodes, and is practically negligible when this value is sufficiently high.
Starting Page	1
Ending Page	5
File Size	149343
Page Count	5
File Format	PDF
ISBN	9781479935895
DOI	10.1109/ITA.2014.6804264
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-02-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless sensor networks Uncertainty Throughput System-on-chip Batteries Energy harvesting Optimization
Content Type	Text
Resource Type	Article

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