1. State Key Laboratory of Rail Traffic Control and Safety, the Frontiers Science Center for Smart High-Speed Railway System, the Key Laboratory of Railway Industry of Broadband Mobile Information Communications, and the Beijing Engineering Research Center of High-Speed Railway Broadband Mobile Communications, Beijing Jiaotong University, Beijing, China
2. State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing, China
3. Institute of Computing Technology, China Academy of Railway Sciences Corporation Ltd., Beijing, China
4. Beijing Key Laboratory of Transportation Data Analysis and Mining, School of Computer and Information Technology, Beijing Jiaotong University, Beijing, China