1. State Key Lab of Internet of Things for Smart City, and also with the Department of Computer and Information Science, University of Macau, Macau, China
2. State Key Laboratory of Internet of Things for Smart City and the Department of Computer and Information Science, University of Macau, Macau, China
3. College of Information Engineering, Zhejiang University of Technology, Hangzhou, China
4. Department of Communication Engineering, Dalian Maritime University, Dalian, China
5. School of Electronic Science and Engineering, Nanjing University, Nanjing, China
6. Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada