Time synchronization method, apparatus, system and storage medium in OTN network

摘要

The present invention relates to a time synchronization method, an apparatus, a system and a computer storage medium in an OTN network, in which a master device generates a time synchronization message to perform a first correction on a correction field of a time synchronization message, 1) transmitting a time synchronization message including a tie stamp T1 to a slave device; The slave device performing a second correction on the correction field of the time synchronization message and adding a second time stamp T2; The slave device generates a time delay request message to perform a third correction on the correction field of the time delay request message and to transmit a time delay request message including the third time stamp T3 to the master device; The master device performs a fourth correction on the correction field of the time delay request message and adds a fourth time stamp T4 to generate a time delay response including a correction field of the time delay request message after the fourth correction and a fourth time stamp T4 Transmitting a message to a slave device; And performing a time synchronization with the master device based on the correction field of the time synchronization message and the correction field of the time delay request message of T1, T2, T3, T4, and the slave device.