下一代铁路移动通信中公专网系统间干扰协调的研究  

Research on Interference Coordination Between Public and Private Network Systems in Next Generation Railway Mobile Communication

作　　者：张驰 寇鸣 刘兴 郭瑞彬 Zhang Chi;Kou Ming;Liu Xing;Guo Ruibin(CRSC Research&Design Institute Group Co.,Ltd.,Beijing 100070,China;China Railway Wuhan Group Co.,Ltd.,Wuhan 430064,China;School of Electronic and Informaiton Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京全路通信信号研究设计院集团有限公司,北京100070 [2]中国铁路武汉局集团有限公司,武汉430064 [3]北京交通大学电子信息工程学院,北京100044

出　　处：《铁路通信信号工程技术》2023年第8期32-36,共5页Railway Signalling & Communication Engineering

基　　金：中国国家铁路集团有限公司重大科研项目(P2021G012)。

摘　　要：针对下一代铁路移动通信技术中公专网系统间存在频率干扰的情况,研究干扰产生的原因、发生干扰的场景并分析抑制干扰采用的方法,研究3GPP中基站隔离度的要求并给出公转网无线系统部署要求,以及驻波比(VSWR)、带外信号抑制比和滤波器插入损耗等参数相互制约的关系,通过仿真得出三者间的关系以及铁路专网无线通信系统滤波器指标要求。This paper mainly focuses on the frequency interference between public and private network systems in the next generation of railway mobile communication technology,and studies the causes of the interference,the scenarios of the interference and the methods to suppress the interference.The requirements of base station isolation degree in 3GPP are studied and the deployment requirements of wireless system between public and private networks are given.This paper shows that the parameters of VSWR,out-of-band signal rejection ratio and fi lter insertion loss are mutually restrictive.Through simulation,the relationship among the three parameters and the fi lter index requirements of wireless communication systems in the railway private networks are obtained.

关 键 词：邻信道干扰 杂散干扰 带外抑制 滚降 频分多路复用 相邻通道泄漏比 相邻信道选择性 

分 类 号：U285.5[交通运输工程—交通信息工程及控制]