A relay node deployment method for disconnected wireless sensor networks: Applied in indoor environments |
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| Authors: | Jenn-Hwan Tarng Bing-Wen Chuang Pei-Chen Liu |
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| Affiliation: | 1. Le Quy Don Technical University, Viet Nam;2. Hanoi Department of Science and Technology, Viet Nam;3. Queen''s University, Belfast, UK;4. Duy Tan University, Viet Nam;1. College of Mechatronics and Control Engineering, Hubei Normal University, Huangshi 435002, China;2. Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;3. School of Electronics and Information, Yangtze University, Jingzhou 434023, China;1. College of Computer and Communication Engineering, Changsha University of Science and Technology, Changsha, Hunan, 410114, PR China;2. Hunan Provincial Key Laboratory of Intelligent Processing of Big Data on Transportation, Changsha University of Science and Technology, Changsha, Hunan, 410114, PR China;1. College of Mechatronics and Control Engineering, Hubei Normal University, Huangshi 435002, PR China;2. College of Automation, Huazhong University of Science and Technology, Wuhan 430074, PR China;3. School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, PR China;4. School of Information Science and Engineering, East China University of Science and Technology, Shanghai 200237, PR China |
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| Abstract: | In this paper, a 2-D geometric and adaptive relay node deployment method with polynomial-time complexity is proposed to reduce relay nodes for bridging all disconnected node pairs of a wireless sensor network (WSN). In this method, proper locations for placing relay nodes are discovered on a plane, which gives a much larger degree of freedom to compare with the traditional 1-D search algorithm. In this way, the deployed relay node can bridge as many disconnected node pairs as possible around it. Besides, the method can also adapt to radio environments because that a sophisticated propagation model including large-scale path loss, shadowing, and multipath fading effects is used to estimate link connectivity. Simulation result validates its robustness and efficiency compared with the existing relay node deployment methods. The proposed method significantly reduces the total number of relay nodes compared with the related works in all of the investigated indoor environments. |
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