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Sensors 2018, 18(12), 4283; https://doi.org/10.3390/s18124283

Joint Transmission Power Control and Relay Cooperation for WBAN Systems

1
Artificial Intelligence Research Center, National Innovation Institute of Defense Technology, Beijing 100071, China
2
School of Electrical, Computer and Telecommunications Engineering, Faculty of Engineering and Information Science, University of Wollongong, Wollongong, NSW 2522, Australia
*
Author to whom correspondence should be addressed.
Received: 30 October 2018 / Revised: 27 November 2018 / Accepted: 1 December 2018 / Published: 5 December 2018
(This article belongs to the Special Issue Wireless Body Area Networks and Connected Health)
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Abstract

Improving transmission reliability is a crucial challenge for Wireless Body Area Networks (WBANs) because of the instability of channel conditions and the stringent Packet Loss Ratio (PLR) requirement for many WBANs applications. On the other hand, limited by the size of WBAN nodes, the energy consumption of WBAN nodes should be minimized. In this paper, we jointly consider transmission power control, dynamic slot scheduling and two-hop cooperative mechanism and propose an Autocorrelation-based Adaptive Transmission (AAT) scheme that achieves a better trade-off between transmission reliability and energy consumption for WBAN systems. The new scheme is designed to be compatible with IEEE 802.15.6. We evaluated the performance of the newly proposed scheme by importing the real channel datasets into our simulation model. Simulation results demonstrate that the AAT method can effectively improve the transmission reliability while reducing the energy consumption. We also provide the performance evaluation from three perspectives, namely packet error ratio, energy consumption and energy efficiency, and provide recommendations on the application of the two-hop cooperative mechanism associated with the proposed AAT in the contexts of WBANs. View Full-Text
Keywords: transmission power control; relay cooperation; dynamic slot scheduling; channel autocorrelation; wireless body area networks; IEEE 802.15.6 transmission power control; relay cooperation; dynamic slot scheduling; channel autocorrelation; wireless body area networks; IEEE 802.15.6
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Zhang, H.; Safaei, F.; Tran, L.C. Joint Transmission Power Control and Relay Cooperation for WBAN Systems. Sensors 2018, 18, 4283.

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