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Vol. 189, Issue 6, June 2015, pp. 22-30

 

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Energy Efficient Payload Aggregation in WSNs
 

kos MILNKOVICH, Gergely ILL, Kroly LENDVAI, Sndor IMRE, Sndor SZAB

Department of Networked Systems and Services, Budapest University of Technology and Economics, Magyar Tudosok krt 2, Budapest, H-1117, Hungary

E-mail: milankovich@hit.bme.hu, ill@hit.bme.hu, lendvai@hit.bme.hu, imre@hit.bme.hu, szabos@hit.bme.hu

 

Received: 29 May 2015 /Accepted: 26 June 2015 /Published: 30 June 2015

Digital Sensors and Sensor Sysstems

 

Abstract: Creating wireless sensor networks requires a different approach than traditional communication networks because energy efficiency plays a key role in sensor networks, which consist of devices without external power. The amount of energy used determines the lifetime of these devices. In most cases data packets are less sensitive to delay, thus can be aggregated, making it possible to gather more useful information reducing the energy required to transmit information. This article discusses the energy efficiency of different Forward Error Correction algorithms and presents a method to calculate the optimal amount of aggregation of the data packets in terms of power consumption, while taking into account the Bit Error Rate characteristics of the wireless channel. The contribution of this paper is a general method to improve the energy efficiency of wireless sensor networks by using the optimal amount of aggregation in case of different Forward Error Correction codes and channel characteristics. The presented results can be applied to any packet-based wireless protocol.

 

Keywords: Wireless sensor networks, Aggregation, Energy efficiency, FEC, BER.

 

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