Reconfigurable intelligent surface has attracted the attention of academia and industry as soon as it appears because it can flexibly manipulate the electromagnetic characteristics of wireless channel. Especially in the past one or two years, RIS has been developing rapidly in academic research and industry promotion and is one of the key candidate technologies for 5G-Advanced and 6G networks. RIS can build a smart radio environment through its ability to regulate radio wave transmission in a flexible way. The introduction of RIS may create a new network paradigm, which brings new possibilities to the future network, but also leads to many new challenges in the technological and engineering applications. This paper first introduces the main aspects of RIS enabled wireless communication network from a new perspective, and then focuses on the key challenges faced by the introduction of RIS. This paper briefly summarizes the main engineering application challenges faced by RIS networks, and further analyzes and discusses several key technical challenges among of them in depth, such as channel degradation, network coexistence, network coexistence and network deployment, and proposes possible solutions.
翻译:重新配置的智能表面一旦出现就引起学术界和工业界的注意,因为它能够灵活地操纵无线频道的电磁特性,特别是在过去一两年里,RIS在学术研究和工业促进方面发展迅速,是5G高级和6G网络的关键候选技术之一。RIS能够通过其灵活地管理无线电波传输的能力来建立一个智能无线电环境。引入RIS可能会创造一种新的网络模式,给未来的网络带来新的可能性,但也导致技术和工程应用方面的许多新挑战。本文首先从新的角度介绍RIS启用的无线通信网络的主要方面,然后着重介绍采用RIS所面临的关键挑战。本文简要概述了RIS网络在工程应用方面所面临的主要挑战,并进一步深入分析和讨论其中的一些关键技术挑战,例如频道退化、网络共存、网络共存和网络部署,并提出可能的解决办法。