毫米波5G通信系统动态链路及决策树切换算法

Dynamic Link and Decision Tree Switching Algorithm of 5G Communication System Base on Millimeter Wave Technology

毫米波是5G通信系统的重要频段,具有波长短、频带宽等优点。将毫米波5G通信技术应用于高速铁路车地通信系统,采用多链路融合无线通信组网方式,为车地之间的信息交换提供大容量、连续、可靠的无线传输通道。针对高速铁路车地通信中的越区切换,提出适用于不同环境的动态链路—决策树切换算法。经过仿真试验,证明动态链路算法可以有效完成切换,并可以根据环境因素调整切换位置,实现安全、高效、稳定、低延时的高速车地通信。

Millimeter wave is an important frequency band of 5 G communication system,which has the advantages of short wavelength and broad frequency bandwidth.The millimeter wave 5 G communication technology is applied to the train-ground communication system for high-speed railway,and the multi-link fusion wireless communication network is used to provide highcapacity,continuous and reliable wireless transmission channel for the exchange of information between trains and the systems on the ground.As for cross-zone switching of vehicle-ground communication of high-speed railway,a dynamic link decision tree switching algorithm adaptive to different environments is proposed.The results of simulation test show that dynamic link algorithm can effectively conduct the switching and can adjust the switching position according to environmental factors to achieve safe,efficient,stable high-speed train-ground communication with low delay.