（中国信息通信研究院，中国 北京 100191）
Physical Layer Security Issues in C-V2X Communication
SHEN Xia, ZHOU Wei, WANG Zhiqin
(China Academy of Information and Communications Technology, Beijing 100191, China)
Abstract: Cellular vehicle-to-everything (C-V2X) has stringent requirements not only on the wireless communication delay and reliability in the driving environment, but also on the communication security. The physical layer security issues in the C-V2X communication are analyzed, including malicious detecting of physical data and abnormal channel occupation using resource allocation method based on channel sensing. Solutions through allocating dedicated scrambling ID for unicast communication and abnormal channel occupation monitoring and identification scheme are put forward to deal with those problems, respectively, and the communication security of C-V2X would thus be effectively improved.
Keywords: C-V2X; physical layer security; wireless communication; sidelink