1. School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, China
2. Wireless Network RAN Algorithm Department, Xi’an Huawei Technologies Co. Ltd., Xi’an, China
3. College of Mathematics and School of Aeronautics and Astronautics, Sichuan University, Chengdu, Sichuan, China
4. School of Software Engineering, Tongji University, Shanghai, China