1. School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing, China
2. College of Computer and Information Technology, China Three Gorges University, Yichang, China
3. Inner Mongolia University, Hohhot, China
4. Shanghai Satellite Network Research Institute Co., Ltd., Shanghai Key Laboratory of Satellite Network, Shanghai, China
5. Henan Joint International Research Laboratory of Intelligent Networking and Data Analysis, School of Information Engineering, Zhengzhou University, Zhengzhou, China