夏方昊，王新奕，郑重
（北京理工大学通信技术研究所，中国 北京 100081）
摘要：对智能超表面（RIS）辅助通信感知一体化（ISAC）技术的概念、发展历程、应用场景和研究现状等方面进行了系统性介绍。认为当前ISAC技术在波束设计、资源调度及通信安全等方面被动地受到无线电磁环境约束。而RIS技术可以通过主动重构无线信道特征，引入额外空间自由度突破传统通信感知系统的能力，有效提升ISAC系统的多种性能指标，包括提升通信速率、消除用户间干扰、权衡感知与通信性能、增强通信安全等，给未来智慧交通、智慧工厂和无人机网络等垂直行业应用提供了高精度、广覆盖的通信感知功能。
关键词：ISAC；RIS；干扰消除；通信安全
RIS-Assisted Integrated Sensing and Communications
XIA Fanghao, WANG Xinyi, ZHENG Zhong
(Research Institute of Communication Technology, Beijing Institute of
Technology, Beijing 100081, China)
Abstract: Through the systematic introduction of the concept, the development, the application scenarios, and the state of the art of the re⁃
configurable intelligent surface (RIS) assisted integrated sensing and communications (ISAC), it is believed that the performance of the current ISAC is passively constrained by the wireless electromagnetic environment in beam design, resource scheduling and communication security. By actively reconfiguring the characteristics of the wireless channels, RIS introduces an additional spatial degree of freedom to improve the capabilities of the traditional sensing and communications, which enhances multiple performance metrics of ISAC systems, including communication rate, interference cancellation, the trade-off between radar and communication, and communication security. Such improvements provide high-precision sensing and broad-coverage communication for future vertical use cases, such as intelligent transportation, the smart factory, and the unmanned aerial vehicle networks.
Keywords: ISAC; RIS; interference cancellation; communication security
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