Gun Wook Gil, Minjae Kang, Dong Kun Noh

KIPS Transactions on Computer and Communication Systems, Vol. 9, No. 4, pp. 83-88, Apr. 2020
10.3745/KTCCS.2020.9.4.83,   PDF Download:   Full Text
Keywords: Wireless Sensor Network, Solar-Powered, FEC, Link-Quality
Abstract

In Solar-powered wireless sensor networks(SP-WSN), the battery is periodically charged, so the best use of harvested energy is more important, rather than minimizing energy consumption. Meanwhile, as is well known, the reliability of communication between sensor nodes is very limited due to the resource-constraint of sensor nodes. In this paper, we propose an advanced FEC (forward error correction) scheme which can give SP-WSN more reliability for communication. Firstly, the proposed scheme uses energy modeling to calculate the amount of surplus energy which can be utilized for extra operations, and then determines the number of additional parity bits according to this amount of surplus energy. At the same time, link quality modeling calculates the optimal parity bits for error recovery in the current data communication environment. Finally, by considering these two parity sizes, it is possible to determine the optimal parity size that can maximize the data reliability without affecting the node black out. Performance verification was performed by comparing the amount of data collected at the sink and the number of outage nodes with other schemes.

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