CLOCK SYNCHRONIZATION METHOD AND SYSTEM IN 1588-2008 PROTOCOL

摘要

Disclosed are a clock synchronization method and system in a 1588-2008 protocol. The method includes: when a signaling message negotiation mechanism is not initiated by means of unicast communication, a slave clock device receives a PTP message sent from a master clock device and acquires a message average interval field value in the PTP message, detects the state of a clock link between the slave clock device and the master clock device according to the actual interval of the PTP message, initiates a synchronization operation according to the clock link state to obtain synchronization information, and adjusts the local clock of the slave clock device according to the synchronization information. By way of the present invention, a slave clock device can precisely acquire the value of the average message interval field when a master clock device sends each message, and thus precisely acquires the interval at which the master clock device sends PTP messages, and completes the adjustment of the local clock according to the obtained average message interval field value, and finally realizes the effect that the local clock of the slave clock device synchronizes with the clock of the opposite clock of the master clock device.