LTE-M System Performance of Integrated Services Based on Field Test Results

Different services are transmitted separately by independent communication networks in existing urban rail transit system, and most of them are adopting WLAN (Wireless Local Area Network) technologies. To transmit the service in single radio access network, An integrated TD-LTE based train ground radio communication system for the metro system (LTE-M) is designed and built on the ring rail line in Beijing to perform the field test of the performance. The transmission media between the train and ground are the dual leaky coaxial cables (LCX) to implement the MIMO transmission. Extensive test cases are designed and implemented in the field test to get the transmission performance of the different applications. The results show that the LTE-M can reliably transmit the integrated services in real time.