1. State Key Laboratory of Networking and Switching Technology, Beijing University of Post and Telecommunications, Beijing, China
2. College of Artificial Intelligence, Southwest University, Chongqing, China
3. Information Security Office of the Internet of Vehicles Business Department, China Automotive Data Corporation, Tianjin, China
4. School of Cyberspace Science and Technology, Beijing Institute of Technology, Beijing, China
5. Department of Information and Electronic Engineering, Muroran Institute of Technology, Muroran, Japan