5G网络时间同步研究

Research on clock synchronization in 5G network

针对5G网络中,4G与5G基站时间同步不对齐,会导致5G用户下载速率下降和4G/5G无法正常互操作等问题,本文分场景深入分析了问题现象和原因,提出了通过信号分路方式为5G提供基站同步信号、新建卫星接收天线引入、选用1588v2时钟方案等解决方案,建议5G网络时间同步建设优选引入卫星信号。对将来基站GPS/北斗授时系统双模改造进行展望。

This paper introduces the network clock synchronization scheme.For 5G network,the clock synchronization mismatch between 4G and 5G base stations will lead to the decline of 5G users'download rate and the failure of 4G/5G interoperability.Based on the in-depth analysis of the phenomenon and causes,the paper proposes solutions such as providing 5G with base station synchronization signal through signal shunting,introducing new satellite receiving antenna and selecting 1588v2 clock scheme.The plan and prospect of the future promotion of the dual-mode transformation of the mobile base station Beidou/GPS time service system.This paper provides suggestions for the construction of 5G network clock synchronization.