智能双星授时系统的研究及分析

目前信息通信是发展最快的领域之一。各运营商建设5G网络的进程加快,2020年前需要建成5G商用网络。5G时代比4G网络对于授时的精度要求更高,要保证卫星信号的高精度授时,使用传统的窄带单频点GPS天线已经不能满足要求,必须要使用高带宽多频点的新型卫星接收天线。且基站间的时钟同步能够为各基站系统提供高精度的时间和频率同步信号,但是传统GPS授时系统一旦出现问题就会直接影响KPI指标,导致通话质量差,导致误码率、丢包率增大,影响终端的计费签权。

At present, information communication is one of the fastest developing fields. The construction of 5G network by operators is speeding up, and 5G commercial network needs to be built before 2020. In the era of 5G, the precision of time service is higher than that of 4G network. In order to ensure the high precision of satellite signal timing, the traditional narrowband single-frequency point GPS antenna can not meet the requirements, so it is neeessary to use a new type of satellite receiving antenna with high bandwidth and multi-frequency points. The clock synchronization between base stations can provide high precision time and frequency synchronization signals for each base station system, but the problems of traditional GPS timing system will directly affect the KPI index and lead to poor call quality. It leads to the increase of bit error rate and packet loss rate, and affects the charging right of the terminal.