1. State Key Laboratory of Internet of Things for Smart City, University of Macau, Taipa, Macau, China
2. School of Computer Science and Engineering, Nanyang Technological University, Jurong West, Singapore
3. School of Automation, Guangdong University of Technology, Guangzhou, China
4. Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
5. Department of Computer and Information Science, State Key Laboratory of Internet of Things for Smart City, University of Macau, Taipa, Macau, China