1. Beijing Jiaotong University,School of Electronic and Information Engineering,Beijing,China,100044
2. Beijing Jiaotong University,Collaborative Innovation Center of Railway Traffic Safety,Beijing,China,100044
3. Beijing University of Posts and Telecommunications,State Key Laboratory of Networking and Switching Technology,Beijing,China,100876
4. China State Railway Group Co., Ltd,Engineering Management Center
5. University of New South Wales,School of Electrical Engineering and Telecommunications,Sydney,Australia