Delay constrained relay node placement in two-tiered wireless sensor networks: A set-covering-based algorithm

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	Delay constrained relay node placement in two-tiered wireless sensor networks: A set-covering-based algorithm
	Liang W(梁炜); Zheng M(郑萌); Ma CF(马超凡)
刊名	Journal of Network and Computer Applications
	2017
卷号	93 页码:76-90
关键词	Wireless Sensor Networks Set cover Delay Relay node placement Approximation algorithm
ISSN号	1084-8045
通讯作者	Liang W(梁炜) ; Zheng M(郑萌)
产权排序	1
中文摘要	As Wireless Sensor Networks (WSNs) are widely used in time-critical applications, e.g., factory automation and smart grid, the importance of Delay Constrained Relay Node Placement (DCRNP) problem is becoming increasingly noticeable. Considering the benefits in terms of energy efficiency and scalability brought by the two-tiered topology, this paper studies the DCRNP problem in two-tiered WSNs. To address the NP-hardness, a Two-phase Set-Covering-based Algorithm (TSCA) is proposed to approximately solve this problem. To be specific, in the first phase, a Connectivity-aware Covering Algorithm (CCA) places Relay Nodes (RNs) to fully cover distributed sensor nodes with respect to delay constraints, and meanwhile CCA tries to reduce the number of connected components in the topology constructed in this phase so as to save the RNs deployed to build network connectivity. In the second phase, the network connectivity is built in obedience to delay constraints by a Set-Covering-based Algorithm (SCA) through an iterative manner, which formulates the deployment of RNs at each iteration as the set covering problem and solves this problem using a classic set covering algorithm. In addition, the elaborated analysis of time complexity and approximation ratio of the proposed algorithms is given out. Finally, extensive simulations demonstrate that TSCA can significantly save deployed RNs in comparison to existing algorithms.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Computer Science, Hardware & Architecture ; Computer Science, Interdisciplinary Applications ; Computer Science, Software Engineering
研究领域[WOS]	Computer Science
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000407659700006
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/20503]
专题	沈阳自动化研究所_工业控制网络与系统研究室
作者单位	1.The University of Chinese Academy of Sciences, Beijing 100049, China 2.Key Laboratory of Networked Control Systems, Sehnyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China 3.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China 4.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
推荐引用方式 GB/T 7714	Liang W,Zheng M,Ma CF. Delay constrained relay node placement in two-tiered wireless sensor networks: A set-covering-based algorithm[J]. Journal of Network and Computer Applications,2017,93:76-90.
APA	Liang W,Zheng M,&Ma CF.(2017).Delay constrained relay node placement in two-tiered wireless sensor networks: A set-covering-based algorithm.Journal of Network and Computer Applications,93,76-90.
MLA	Liang W,et al."Delay constrained relay node placement in two-tiered wireless sensor networks: A set-covering-based algorithm".Journal of Network and Computer Applications 93(2017):76-90.