CLOCK SYNCHRONIZATION METHOD AND SYSTEM IN 1588-2008 PROTOCOL

摘要

A method and system for clock synchronization in a 1588-2008 protocol are provided. The method includes: when a signaling message negotiation mechanism is not used in unicast communication, a slave clock device receiving a PTP message sent from a master clock device and acquires an average message interval field value in the PTP message, detecting a state of a clock link between the slave clock device and the master clock device according to the actual interval of the PTP message, initiating a synchronization operation according to the state of the clock link to obtain synchronization information, and adjusts a 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 the PTP message, and completes the adjustment of the local clock according to the obtained value of the average message interval field, and finally realizes the effect that the local clock of the slave clock device synchronizes with the opposite-end clock of the master clock device.