SYNCHRONIZATION METHOD, INTERMEDIATE NODE, AND SLAVE NODE OF COMMUNICATION NETWORK SYSTEM

摘要

The present invention provides a synchronization method, an intermediate node, and a slave node. 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 master clock, a frequency offset of the intermediate node relative to the master clock; the intermediate node transmits the frequency offset of the intermediate node relative to the master clock to a next node, so that a slave node corrects, according to the frequency offset of the intermediate node relative to the master clock, a clock frequency of the slave node or a clock frequency and time of the slave node.

主权项

1. A synchronization method of a communication network system, comprising:
obtaining, by an intermediate node, 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; obtaining, by the intermediate node, 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 master clock, a frequency offset of the intermediate node relative to the master clock; and transmitting, by the intermediate node, the frequency offset of the intermediate node relative to the master clock to a next node, so that a slave node corrects a clock frequency of the slave node or a clock frequency and time of the slave node according to the frequency offset of the intermediate node relative to the master clock.