Time synchronizing method, apparatus and system for master, slave time clock side in synchronous network

Abstract

The inventive embodiment discloses a method, a device and a system for synchronizing time on a main clock side and a slave clock side in a synchronization network, which belong to the communication field and are designed to solve the technical problem in achieving time synchronization of the synchronization network. The method synchronizing time on the slave clock side in the synchronization network comprises the following steps: receiving a synchronous message supported on a first downlink frame; generating an entrance indication pulse according to the received first downlink frame, the entrance indication pulse being fixed with the time delay of fixed-frame bytes in the first downlink frame; collecting a first time on the slave clock side according to the entrance indication pulse; receiving a following message supported on a second downlink frame, the following message carrying a first time for transmitting the synchronous message on the main clock side; and adjusting the local time according to the difference between the first time on the main clock side and the first time on the slave clock side.

Description

technical field [0001] The invention relates to a communication system, in particular to a time synchronization method, device and system of a synchronization network. Background technique [0002] In the current synchronization network, taking my country as an example, each provincial switching office has a clock reference LPR, and this clock is basically synchronized by GPS. Therefore, the inter-office equipment of the switching office can be synchronized through GPS. However, with the development of technology, although GPS technology has become more and more mature, its working efficiency has not been able to make breakthrough progress, and the high cost brought by the use of GPS technology has begun to restrict the development of the industry. Therefore, it is necessary to provide a new clock synchronization technology used in the synchronization network. Contents of the invention [0003] Embodiments of the present invention provide a time synchronization method, de...

AI Technical Summary

Problems solved by technology

However, with the development of technology, although GPS technology has become more and more mature, its work efficiency has not been able to make breakthrough progress, and the high cost brought by the use of GPS technology has begun to restrict the development of the industry.

Images