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0这篇研究论文探讨了在物联网应用中，如何利用可重构智能表面（RIS）技术来增强无线供电反向散射地下传感器网络（WPBUSN）的性能。文章介绍了WPBUSN的基本架构，强调了地下恶劣环境对无线通信的挑战，例如土壤衰减和直连链路阻塞。为克服这些问题，作者提出了RIS辅助的WPBUSN方案，并通过模拟一个真实的农业案例，展示了其在提高系统吞吐量方面的显著优势。最后，论文指出了RIS在WPBUSN实际应用中的挑战和未来研究方向，如信道配置、信道状态信息获取和干扰管理等。
RIS-Aided Wireless-Powered Backscatter Communications for Sustainable Internet of Underground Things
Abstract:
Wireless-powered underground sensor networks (WPUSNs), which enable wireless energy transfer to sensors located underground, is a promising approach for establishing sustainable internet of underground things (IoUT). To support urgent information transmission and improve resource utilization within WPUSNs, backscatter communication (BC) is introduced, resulting in what is known as wireless-powered backscatter underground sensor networks (WPBUSNs). Nevertheless, the performance of WPBUSNs is significantly limited by severe channel impairments caused by the underground soil and the blockage of direct links. To overcome this challenge, in this work, we propose integrating reconfigurable intelligent surface (RIS) with WPBUSNs, leading to the development of RIS-aided WPBUSNs. We begin by reviewing the recent advancements in BC-WPUSNs and RIS. Then, we propose a general architecture of RIS-aided WPBUSNs across various IoUT scenarios, and discuss its advantages and implementation challenges. To illustrate the effectiveness of RIS-aided WPBUSNs, we focus on a realistic farming case study, demonstrating that our proposed framework outperforms the three benchmarks in terms of the sum throughput. Finally, we discuss the open challenges and future research directions for translating this study into practical IoUT applications.
Published in: IEEE Internet of Things Magazine ( Volume: 8, Issue: 2, March 2025)
Page(s): 70 - 76
Date of Publication: 27 February 2025
ISSN Information:
Electronic ISSN: 2576-3199
Print ISSN: 2576-3180
Publisher: IEEE
Funding Agency:
10.13039/501100001809-National Nature Science Foundation of China (Grant Number: 62201347)
