1. School of Internet of Things, Nanjing University of Posts and Telecommunications, Nanjing, China
2. IOT Thrust, Hong Kong University of Science and Technology (Guangzhou), Guangzhou, Guangdong, China
3. Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, NL, Canada
4. Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada