| 摘要 |
The present invention provides a synchronization method, an intermediate node, and a slave node of a communications network system. An intermediate node obtains, according to a local clock frequency of the intermediate node and an obtained clock frequency of a previous node, a frequency offset of the intermediate node relative to the previous node; the intermediate node obtains, according to the frequency offset of the intermediate node relative to the previous node and an obtained frequency offset of the previous node relative to a primary clock, a frequency offset of the intermediate node relative to the primary clock; the intermediate node sends, to a next node, a frequency offset of the intermediate node relative to the primary clock, so that a slave node corrects, according to the frequency offset of the intermediate node relative to the primary clock, a clock frequency of the slave node or a clock frequency and time of the slave node. By using the synchronization method, synchronization apparatus, and nodes provided by the present invention, synchronization precision can be improved. |
