Energy hole mitigation through cooperative transmission in wireless sensor networks

Fei, Li, Chen, Yi, Gao, Qiang, Peng, Xiao-Hong and Li, Qiong (2015). Energy hole mitigation through cooperative transmission in wireless sensor networks. International Journal of Distributed Sensor Networks, 2015 ,

Abstract

The energy balancing capability of cooperative communication is utilized to solve the energy hole problem in wireless sensor networks. We first propose a cooperative transmission strategy, where intermediate nodes participate in two cooperative multi-input single-output (MISO) transmissions with the node at the previous hop and a selected node at the next hop, respectively. Then, we study the optimization problems for power allocation of the cooperative transmission strategy by examining two different approaches: network lifetime maximization (NLM) and energy consumption minimization (ECM). For NLM, the numerical optimal solution is derived and a searching algorithm for suboptimal solution is provided when the optimal solution does not exist. For ECM, a closed-form solution is obtained. Numerical and simulation results show that both the approaches have much longer network lifetime than SISO transmission strategies and other cooperative communication schemes. Moreover, NLM which features energy balancing outperforms ECM which focuses on energy efficiency, in the network lifetime sense.

Publication DOI: https://doi.org/10.1155/2015/757481
Divisions: Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences > Adaptive communications networks research group
Additional Information: Copyright © 2015 Li Fei et al. 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.
Uncontrolled Keywords: Computer Networks and Communications,Engineering(all)
Full Text Link: http://www.hind ... sn/2015/757481/
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2015-02
Authors: Fei, Li
Chen, Yi
Gao, Qiang
Peng, Xiao-Hong ( 0000-0002-0608-233X)
Li, Qiong

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