Energy hole mitigation through cooperative transmission in wireless sensor networks


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:
Divisions: College of Engineering & Physical 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,General Engineering
Publication ISSN: 1550-1477
Last Modified: 05 Jul 2024 17:28
Date Deposited: 02 Mar 2015 10:10
Full Text Link: http://www.hind ... sn/2015/757481/
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2015-02
Authors: Fei, Li
Chen, Yi
Gao, Qiang
Peng, Xiao-Hong (ORCID Profile 0000-0002-0608-233X)
Li, Qiong



Version: Published Version

License: Creative Commons Attribution

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