Charger Placement With Wave Interference

IF 7.7 2区 计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS IEEE Transactions on Mobile Computing Pub Date : 2024-09-18 DOI:10.1109/TMC.2024.3460403
Jing Xue;Die Wu;Jian Peng;Wenzheng Xu;Tang Liu
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Abstract

To guarantee the reliability for WRSNs, placing sufficient static chargers effectively ensures charging coverage for the entire network. However, this approach leads to a considerable number of sensors located within charging overlaps. The destructive wave interference caused by concurrent charging in these overlaps may weaken sensors received power, thereby negatively impacting charging performance. This work addresses a CHArging utIlity maximizatioN (CHAIN) problem, which aims to maximize the overall charging utility while considering wave interference among multiple chargers. Specifically, given a set of stationary sensors, we investigate how to determine optimal positions for a fixed number of chargers. To tackle this problem, we first develop a charging model with wave interference, then propose a two-step charger placement scheme to identify the optimal charger positions. In the first step, we maximize the overall additive power of the waves involved in interference by selecting an appropriate initial position for each charger. Then, in the second step, we maximize the overall charging utility by finding the optimal final position for each charger around its initial position. Finally, to evaluate the performance of our scheme, we conduct extensive simulations and field experiments and the results suggest that CHAIN performs better than the existing algorithms.
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带波浪干扰的充电器安置
为了保证WRSNs的可靠性,放置足够的静态充电器可以有效地保证整个网络的充电覆盖。然而,这种方法导致相当数量的传感器位于充电重叠处。在这些重叠处同时充电引起的破坏性波干扰可能会削弱传感器接收功率,从而对充电性能产生负面影响。这项工作解决了充电效用最大化(CHAIN)问题,该问题旨在最大化整体充电效用,同时考虑多个充电器之间的波干扰。具体来说,给定一组固定传感器,我们研究如何确定固定数量充电器的最佳位置。为了解决这个问题,我们首先建立了一个具有波干扰的充电模型,然后提出了一个两步充电器放置方案来确定最佳充电器位置。在第一步中,我们通过为每个充电器选择适当的初始位置来最大化涉及干扰的波的总体加性功率。然后,在第二步中,我们通过在初始位置附近找到每个充电器的最佳最终位置来最大化整体充电效用。最后,为了评估我们的方案的性能,我们进行了大量的仿真和现场实验,结果表明,CHAIN比现有的算法性能更好。
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来源期刊
IEEE Transactions on Mobile Computing
IEEE Transactions on Mobile Computing 工程技术-电信学
CiteScore
12.90
自引率
2.50%
发文量
403
审稿时长
6.6 months
期刊介绍: IEEE Transactions on Mobile Computing addresses key technical issues related to various aspects of mobile computing. This includes (a) architectures, (b) support services, (c) algorithm/protocol design and analysis, (d) mobile environments, (e) mobile communication systems, (f) applications, and (g) emerging technologies. Topics of interest span a wide range, covering aspects like mobile networks and hosts, mobility management, multimedia, operating system support, power management, online and mobile environments, security, scalability, reliability, and emerging technologies such as wearable computers, body area networks, and wireless sensor networks. The journal serves as a comprehensive platform for advancements in mobile computing research.
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