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Sensors 2015, 15(3), 5914-5934; doi:10.3390/s150305914

Proactive and Reactive Transmission Power Control for Energy-Efficient On-Body Communications

1
Facultad de Minas, Departamento de Energía Eléctrica y Automática, Gaunal, Universidad Nacional de Colombia, Medellín, Carrera 80 No.65-223, Núcleo Robledo, Medellín, 4-72, Colombia
2
Department of Computer Architecture and Automation, Complutense University of Madrid, C/ Profesor José García Santesmases, Madrid s/n. 28040, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Leonhard M. Reindl
Received: 5 January 2015 / Revised: 14 February 2015 / Accepted: 5 March 2015 / Published: 11 March 2015
(This article belongs to the Section Sensor Networks)
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Abstract

In wireless body sensor network (WBSNs), the human body has an important effect on the performance of the communication due to the temporal variations caused and the attenuation and fluctuation of the path loss. This fact suggests that the transmission power must adapt to the current state of the link in a way that it ensures a balance between energy consumption and packet loss. In this paper, we validate our two transmission power level policies (reactive and predictive approaches) using the Castalia simulator. The integration of our experimental measurements in the simulator allows us to easily evaluate complex scenarios, avoiding the difficulties associated with a practical realization. Our results show that both schemes perform satisfactorily, providing overall energy savings of 24% and 22% for a case of study, as compared to the maximum transmission power mode. View Full-Text
Keywords: wireless body sensor networks (WBSNs); transmission power control (TPC); received signal strength indication (RSSI); human body communication wireless body sensor networks (WBSNs); transmission power control (TPC); received signal strength indication (RSSI); human body communication
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Vallejo, M.; Recas, J.; Ayala, J.L. Proactive and Reactive Transmission Power Control for Energy-Efficient On-Body Communications. Sensors 2015, 15, 5914-5934.

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