C频段广播电视卫星接收站抗5G基站干扰兼容性评估及技术指标分析

Compatibility Evaluation and Technical Index Analysis of C-band Broadcasting Satellite Receiving Stations Against 5G Base Station Interference

自2019年起,随着5G基站在全国范围内的快速部署,我国多地出现了C频段(3.7~4.2GHz)广播电视卫星接收站受到5G信号干扰的现象,如何评估5G干扰并制定适合全国范围的有效防护措施,是广播电视行业面临的新挑战。本文简要介绍了系统间兼容性评估的主要方法,分析了卫星接收系统受干扰的作用原理,定位了敏感设备,计算了不同地区卫星接收站抗5G干扰所需的保护距离,评估了风险等级,最后确定了防护指标及保护措施,为行业采取有效的抗5G干扰防护措施提供了参考依据和可行方案。

Since 2019, with rapid deployment of 5G base stations nationwide, C-band(3.7~4.2 GHz) broadcasting satellite receiving stations have been interfered by 5G signals. How to evaluate 5G interference and formulate a suitable nationwide effective protective measures are a new challenge for radio and television industry. This paper briefly introduces main methods of compatibility assessment between systems, analyzes interference principle of broadcasting satellite receiving system, locates sensitive equipment, calculates protection distance required by satellite receiving stations in different regions to resist 5G interference, evaluates risk level, and finally determines protection indicators and protection measures, which provides reference and feasible solutions for the industry to take effective anti-5G interference protection measures.