US Patent 10075287 Time synchronization method and device

Disclosed are a time synchronization method and device. The method includes: a slave device detecting whether time synchronization can be performed via a primary link between a master device and the slave device; and when time synchronization cannot be performed via the primary link between the master device and the slave device, the slave device using a backup link to perform time synchronization. By the method and device in the embodiments of the present document, the technical problem of time synchronization failure caused by abnormalities in the related art is solved, and the technical effect of improving the reliability of time synchronization is achieved.