We discuss the need for a confluence of localization, sensing and communications if RISs are to be deployed in a self-adaptive manner in the dynamically evolving rich-scattering settings that are typical for 6G deployment scenarios such as factories. We establish that in such problems the rich-scattering wireless channels are subject to a highly nonlinear deterministic double-parametrization through both the RIS and uncontrolled moving objects. Therefore, acquiring full context-awareness through localization and sensing is a prerequisite for RIS-empowered communications. Yet, the byproducts of this daunting communications overhead can feed many appliances that require context awareness, such that overhead concerns may vanish. We illustrate the essential steps for operating a self-adaptive RIS under rich scattering based on a prototypical case study. We discover that self-adaptive RISs outperform context-ignorant RISs only below a certain noise threshold that depends, among other factors, on how strongly uncontrolled perturbers impact the wireless channel. We also discuss ensuing future research directions that will determine the conditions under which RISs may serve as technological enabler of 6G networks.
翻译:我们讨论,如果在工厂等6G部署情景中典型的动态变化式富集环境中以自我适应的方式部署RIS,就必须将本地化、遥感和通信结合起来;我们确定,在这类问题上,通过RIS和不受控制的移动天体,富散式无线频道受到高度非线性确定性双重平衡的影响;因此,通过本地化和感测获得全面的环境认识是RIS动力通信的一个先决条件;然而,这一艰巨的通信间接费用的副产品可以供养许多需要背景认识的电器,因此,间接关切可能会消失;我们根据原型案例研究,说明在丰富分散的分散条件下运行自我适应性工作的基本步骤;我们发现,自适应性RIS仅低于环境感光度,除了其他因素外,还取决于无线信道受控性强的程度。我们还讨论今后的研究方向,以确定IRIS作为6G网络技术推进器的条件。