900 MHz频段干扰研究和解决方案

900 MHz Band Interference Research and Solution

900 MHz频段的干扰一直是4G网络部署中的难题,也是4G重耕到5G需要考虑的关键因素。通过分析网管数据和外场测试数据,总结了典型的外部干扰类型,并研究底噪抬升对吞吐率指标、接入指标、丢包率指标的影响。干扰对上行吞吐率影响较大,对下行吞吐率、接入类和掉线率指标影响较小,不同的干扰波形对指标的影响程度不同。基于分析结果,提出900 MHz干扰的解决方案,包括窄带尖峰干扰和宽带干扰解决方案,来降低干扰对用户和网络的影响。

900 MHz band interference has always been a difficult problem in 4 G network deployment,and it is still a key factor in the evolution from 4 G to 5 G.Through the analysis of network management data and field test data,the typical external interference types are summarized,and the impact of noise increase on throughput rate indicators,access indicators,and packet loss rate indicators is studied.Interference has a greater impact on the uplink throughput rate,and has less impact on the downlink throughput rate,access and drop rate indicators.Different interference waveforms have different impact on the indicators.Based on the analysis results,solutions for 900 MHz interference are proposed,including solutions for narrowband interference and broadband interference,to reduce the impact of interference on users and the network.