1. School of Information and Software Engineering, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China
2. IoT Research Center, College of Computer Science and Software Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China
3. Department of Science and Engineering, Novel Global Community Education Foundation, Hebersham, NSW, Australia
4. Department of Electrical Engineering, University of Science and Technology Bannu, Bannu, Pakistan
5. Department of Statistics, Yazd University, Yazd 89175-741, Iran
6. School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China