A time source sinking deployment scheme for the time synchronization network based on GNSS

In the GNSS-based time synchronization system, the ground time source nodes accept the broadcast signal sent by satellites to form a ground time reference. The sinking deployment of the time source can shorten the number of synchronization link hops, enhance deployment flexibility, and match power scenarios with differentiated synchronization accuracy demands. This paper proposes a receiver synchronization domain division mechanism, which is based on the time source sinking network architecture, dividing the time synchronization domain between the synchronization time source and synchronization nodes of the ground synchronization network. The simulation results show that the time source sinking deployment can achieve time synchronization accuracy of the receiving base station at the level of ns, it can also meet the time synchronization requirements of different terminal applications in power scenarios.