摘要
在铁路长期演进(Long-Term Evolution for Railway,LTE-R)技术中,基于A3事件的传统切换算法存在切换成功率不高的问题。文章提出了一种基于信号功率(Reference Signal Received Power,RSRP)的波束赋形切换算法。通过列车在行驶过程中,实时上报的运行信息,使基站在特定的信号功率下,产生波束赋形的增益来保障列车接收到的信号功率始终保持在一个较好的水平。仿真实验结果表明,基于信号接收功率与波束赋形辅助的切换算法,让服务基站和目标基站都可以提供较好的信号接收强度,适当地提前了切换位置,有效地提升了切换的成功概率。
In the Long-Term Evolution for Railway(LTE-R)system,the traditional A3 event-based handover algorithm has an issue of low handover success rate.This paper proposes a handover algorithm based on Reference Signal Received Power(RSRP)and assisted beamforming,which collects the real-time information through the running train.Thus,the base station can generate a beamforming gain at a specific signal power,thereby ensures that the signal power received by the train is always maintained at a preferable level.The simulation results show that the handover algorithm based on RSRP and assisted beamforming allows both the serving base station and the target base station to provide better signal reception strength,advances the handover location appropriately,and improves the probability of handover success effectively.
作者
钟华
牛宏侠
李翔宇
ZHONG Hua;NIU Hongxia;LI Xiangyu
出处
《科技创新与应用》
2020年第13期11-14,共4页
Technology Innovation and Application
基金
甘肃省高等学校科研项目(编号:2017A-026,2018C-11,2018A-22)
甘肃省自然基金(编号:18JR3RA130)。
