（北京邮电大学，中国 北京 100876）
Reconfigurable Intelligent Surface-Assisted Integrated Sensing and Communication System
YANG Xiaoyu, WEI Zhiqing, MENG Chunwei
(Beijing University of Posts and Telecommunications, Beijing 100876, China)
Abstract: Integrated sensing and communication (ISAC) is recognized as one of the candidate technologies of 6G mobile communication, aiming to realize the integration and mutual benefit of sensing and communication. Considering that the reconfigurable intelligent surface (RIS) can intelligently control the propagation environment to improve the capacity and coverage of the network, it has become a key technology for 6G to achieve extensive connectivity. It is believed that deploying RIS on ISAC systems can provide a new performance optimization dimension of communication and sensing. The research significance of ISAC is highlighted, and the key technologies of ISAC are discussed. The working principle of RIS and its applications in sensing system and communication systems are summarized. Finally, the research status of RIS-assisted ISAC to better realize the sensing target and serve the communication users is analyzed.
Keywords: integrated sensing and communication; reconfigurable intelligent surface; 6G; spectrum resource