Considering the introduction of 5G-R in the field of railway communication,this paper presents the development of railway mobile communication systems,studies the core network architecture of 5G-R,and explores the three major application scenarios in the railway domain.It also addresses the Quality of Service(QoS)requirements for service transmission links in specific railway scenarios,and establishes the test method for QoS performance indicators.This enables strategic planning to ensure the transmission rate,reliability and security of key core services in 5G-R communications and train control systems.
5G-RQuality of Service(QoS)test methodUltra-Reliable & Low-Latency Communication(URLLC)enhanced Mobile Broad Band(eMBB)massive Machine Type Communication(mMTC)