1. School of Computer Science and Engineering, Nanyang Technological University, Jurong West, Singapore
2. School of Communications and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China
3. Key Laboratory of Intelligent Information Processing and System Integration of IoT, Ministry of Education, and the School of Automation, Guangdong University of Technology (GDUT), Guangzhou, China
4. Pillar of Information Systems Technology and Design, Singapore University of Technology and Design, Tampines, Singapore
5. School of Electrical and Information Engineering, The University of Sydney, Sydney, NSW, Australia