1. State Key Laboratory of Internet of Things for Smart City and the Department of Computer and Information Science, University of Macau, Macau, China
2. College of Metropolitan Transportation, Beijing Key Laboratory of Traffic Engineering, Beijing University of Technology, Beijing, China
3. College of Information Engineering, Zhejiang University of Technology, Hangzhou, China
4. Shandong Key Laboratory of Wireless Communication Technologies and the School of Control Science and Engineering, Shandong University, Jinan, China
5. Faculty of Computer Science, University of New Brunswick, Fredericton, Canada