目前,国内高速铁路使用基于全球铁路移动通信系统(Global System for Mobile Communications-Railway,GSM-R)的双向无线通信系统,实现列车与地面之间的安全信息传输.然而,无线通信存在传输延迟和丢包,严重时会影响运行效率,因此需要研究GSM-R系统服务质量(Quality of Service,QoS)参数,以满足实时性和可用性需求.选取传输延时作为待优化的GSM-R无线通信系统QoS参数,定量分析端到端传输延迟时间,提出基于无线传输参数自适应的加强学习优化方案.仿真结果表明,该方法可以显著提升无线通信系统性能.
Performance Analysis and Optimization of High Speed Rail Wireless Communication System Based on GSM-R
At present,domestic high-speed railways use a bidirectional wireless communication system based on the Global System for Mobile Communications-Railway(GSM-R)to achieve safe information transmission between trains and the ground.However,wireless communication suffers from transmission delays and packet loss,which can seriously affect operational efficiency.Therefore,it is necessary to study the Quality of Service(QoS)parameters of the GSM-R system to meet real-time and availability requirements.Selecting transmission delay as the QoS parameter to be optimized for GSM-R wireless communication system,quantitatively analyzing end-to-end transmission delay time,and proposing a reinforcement learning optimization scheme based on wireless transmission parameter adaptation.The simulation results show that this method can significantly improve the performance of wireless communication systems.
high speed railwayGlobal System for Mobile Communications-Railway(GSM-R)wireless communicationtransmission delay
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