5G移动通信系统远端基站干扰解决方案研究

Study on Remote-Interference-Management for 5G NR

远端基站干扰指特定气象条件下,TDD系统远端基站的下行信号经远距离低损耗传输后,对近端基站上行链路造成的强干扰,具有干扰范围广、频次高、程度严重等特征。TD-LTE现网中发现的远端基站干扰问题通过私有方案得以解决。到了5G时代,由于全球使用统一的TDD网络,远端基站干扰问题将困扰全球运营商,迫切需要全球性解决方案。文章在TD-LTE私有方案基础上,针对5G新能力,提出一种更智能、更高效、更安全、更普适的远端干扰解决方案,通过自动化、智能化的手段,可有效提高网络利用效率、降低网络运维成本。

Under specific atmospheric conditions,downlink signals of remote base stations in TDD systems may transmit a long distance with low attenuation,and cause severe uplink interferences to near-end base stations,referred to as the remote interference,which has the characteristics of wide range,high frequency,and severe impact.In TD-LTE networks,some proprietary solutions are introduced to mitigate the remote interference.Due to the fact that TDD networks are deployed globally in 5G,the problem will be confronted with global operators,and demands standardized solutions.Based on the existing proprietary scheme,this paper proposes a smart,efficient,safe,and universal remote interference management mechanism for NR,to improve the network utilization efficiency and to reduce the operation cost.