5G信号对广播电视卫星地球站的干扰分析与处置

Analysis and Handling of Interference of 5G Signal to Radio and Television Satellite Earth Station

移动通信的5G基站正在大规模部署和测试应用。由于5G系统使用的3400~3600 MHz频段离广播电视卫星的C波段下行频率较近,严重威胁了广播电视的卫星传输和安全播出。因此,重点分析5G信号对C波段卫星接收的干扰,同时按照广电总局和工信部的相关要求,认真做好卫星信号的干扰排查,与运营商紧密合作,做好卫星信号保护。通过为站内卫星天线安装带通滤波器,初步解决了5G信号的干扰问题,并阐述了卫星地球站进一步降低干扰的几点措施。

The 5G base stations for mobile communications are undergoing large-scale of testing,deployment and application.Because of the 3400~3600 MHz frequency band used by 5G system being relatively close to the downlink frequency of radio and television C-band satellite reception,it is a serious threat to the satellite transmission and safe broadcasting of radio and television.This article focuses on the analysis of the interference that 5G signals have on C-band satellite reception.Meanwhile,in accordance with the relevant requirements of the State Administration of Radio,Film and Television and the Ministry of Industry and Information Technology,careful interference investigations for satellite signals are specially conducted while satellite stations are working closely with telecommunication operators for protections of satellite signals,as well as installing band-pass filters for satellite antennas in the station in order to initially solve the interference problem of 5G signals,with detail-oriented elaboration of several measures for the satellite earth station to further reduce interference.