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随着2015年初工信部对FDD牌照的发放,中国通信全面进入4G时代。所谓4G即第四代通信技术,分为两种制式TD-LTE和FDD-LTE。截止目前,中国三大运营商,移动4G网络使用TD-LTE组网,联通和电信则采用TD-LTE和FDD-LTE混合组网。加之已有的2、3G网络GSM、CDMA、TDS-CDMA、WCDMA等多张网络,4G网络势必存在干扰现象,认清LTE网络中存在的干扰类型和干扰原理对于提高LTE网络容量、保障LTE网络运行速度有决定性的意义。那么今天我们就其中的TD-LTE的干扰进行一下详细的分析。在无线干扰的产生是多种多样的,某些专用无线电系统占用没有明确划分的频率资源、不同运营商网络配置不当、收发滤波器的性能不达标、小区重叠、环境、电磁兼容(EMC)以及有意干扰,都是移动通信网络射频干扰产生的原因。
With the issuance of FDD licenses by the Ministry of Industry and Information Technology in early 2015, China Telecom fully entered the 4G era. The so-called 4G that fourth generation communication technology, divided into two standard TD-LTE and FDD-LTE. Up to now, China’s three major carriers, mobile 4G network using TD-LTE networking, China Unicom and Telecom are using TD-LTE and FDD-LTE hybrid networking. In addition to the existing networks of GSM, CDMA, TDS-CDMA, WCDMA and other networks of 2G networks, there is bound to be interference phenomena in the 4G network. It is clear that interference types and interference principles existing in an LTE network improve the LTE network capacity and the LTE network Speed is decisive. So today we will be one of the TD-LTE interference for a detailed analysis. There are many types of wireless interference. Some dedicated radio systems occupy unidentified frequency resources, improperly configured networks of different operators, non-compliance of transceivers, cell overlap, environment, electromagnetic compatibility (EMC) Interested in interference, are the causes of radio frequency interference in mobile communications networks.