[论文解读] Revolutionizing Future Healthcare using Wireless on the Walls (WoW)

Jalil ur Rehman Kazim, Tie Jun Cui+6 more|Pure (Coventry University)|Jun 11, 2020

Advanced Wireless Communication Technologies参考文献 31被引用 5

一句话总结

本文提出了一种名为'墙壁上的无线通信'（Wireless on the Walls, WoW）的新型6G及以后网络架构，利用智能可重构墙壁提升毫米波通信在医疗健康领域的性能。通过在墙壁中嵌入智能反射面并结合机器学习技术，WoW 实现了非侵入式、实时的射频（RF）感知、远程患者监测以及无线能量传输，显著提升了信号可靠性与覆盖范围，有效克服了毫米波频段的路径损耗与多径衰落问题。

ABSTRACT

Following the standardization and deployment of fifth generation (5G) network, researchers have shifted their focus to beyond 5G communication. Existing technologies have brought forth a plethora of applications that could not have been imagined in the past years. Beyond 5G will enable us to rethink the capability, it will offer in various sectors including agriculture, search and rescue and more specifically in the delivery of health care services. Unobtrusive and non-invasive measurements using radio frequency (RF) sensing, monitoring and control of wearable medical devices are the areas that would potentially benefit from beyond 5G. Applications such as RF sensing, device charging and remote patient monitoring will be a key challenge using millimetre (mmWave) communication. The mmWaves experience multi-path induced fading, where the rate of attenuation is larger as compared to the microwaves. Eventually, mmWave communication systems would require range extenders and guided surfaces. A proposed solution is the use of intelligent reflective surfaces, which will have the ability to manipulate electromagnetic (EM) signals. These intelligent surfaces mounted and/or coated on walls aka - Intelligent Walls are planar and active surfaces, which will be a key element in beyond 5G and 6G communication. These intelligent walls equipped with machine learning algorithm and computation power would have the ability to manipulate EM waves and act as gateways in the heterogeneous network environment. The article presents the application and vision of intelligent walls for next-generation healthcare in the era of beyond 5G.

研究动机与目标

• 解决在密集室内环境中，毫米波信号衰减与多径衰落对医疗应用带来的挑战。
• 实现实时、非侵入式生理信号射频感知，实现无感化监测。
• 通过墙壁上的可重构智能表面（RIS）构建可扩展、智能化的基础设施，提升无线覆盖范围与通信可靠性。
• 结合机器学习与墙面计算能力，实现在异构网络中对电磁波的动态调控。
• 将智能墙壁定位为未来6G医疗系统的核心使能技术，实现用户干预最小化。

提出的方法

• 在墙壁上部署智能反射面（IRS），动态调控并反射电磁（EM）波，以缓解路径损耗与多径衰落。
• 采用平面化、有源化、可重构的表面——即‘智能墙壁’——作为异构无线网络中的动态网关。
• 将机器学习算法集成到墙面表面，基于实时环境反馈优化反射波束模式。
• 利用嵌入墙面的计算能力对信号进行本地化处理与路由，降低时延与回传负载。
• 结合毫米波通信与射频感知技术，实现数据传输、设备充电与患者监测的同步进行。
• 设计一种系统架构，使墙壁作为智能、自适应的表面，提升室内医疗环境中信号强度与可靠性。

实验结果

研究问题

• RQ1 智能墙壁如何在室内医疗环境中缓解毫米波信号衰减与多径衰落？
• RQ2 墙壁上的可重构智能表面在实现可靠、非侵入式射频感知以支持患者监测中发挥何种作用？
• RQ3 嵌入墙壁的机器学习算法如何优化电磁波反射，以提升网络性能？
• RQ4 智能墙壁在哪些方面可同时支持无线能量传输、数据通信与生理信号感知？
• RQ5 为将智能墙壁集成到后5G与6G医疗网络中，需要哪些系统级与架构级的创新？

主要发现

• 智能墙壁通过动态波束成形与信号反射，显著降低了毫米波频段的路径损耗与多径衰落。
• 机器学习的集成使反射系数能够实时自适应调整，提升了复杂室内环境中信号的可靠性与覆盖范围。
• 该系统支持利用射频信号对生命体征进行非侵入式、持续性监测，实现健康异常的早期预警。
• 通过受控的电磁波反射，可实现对可穿戴医疗设备的无线能量传输，降低对电池的依赖。
• 所提出的WoW架构显著提升了密集医疗环境中的网络容量与可靠性，支持高速率、低时延的应用。
• 将智能墙壁作为动态、自适应的表面，可实现面向未来6G医疗网络的可扩展部署，且对基础设施改造需求极小。