1. Internet of Things and Smart City Innovation Platform, Zhuhai Fudan Innovation Institute, Zhuhai, China
2. State Key Laboratory of IoT for Smart City, the Department of Electrical and Computer Engineering, and Guangdong-Hong Kong-Macau Joint Laboratory for Smart Cities, University of Macau, Macao, China
3. School of Information Science and Engineering, Shandong University, Qingdao, China
4. Shandong Provincial Key Laboratory of Network Based Intelligent Computing and the School of Information Science and Engineering, University of Jinan, Jinan, China
5. State Key Lab of Wireless Mobile Communication and the China Academy of Telecommunication Technology, Beijing, China