US 12,348,302 B1
Method and a system for time synchronization based on optical transmission network, and storage medium
Xiong Chen, Fuzhou (CN)
Assigned to RUIJIE NETWORKS CO., LTD., Fuzhou (CN)
Filed by RUIJIE NETWORKS CO., LTD., Fujian (CN)
Filed on Apr. 9, 2025, as Appl. No. 19/173,959.
Application 19/173,959 is a continuation of application No. PCT/CN2024/118639, filed on Sep. 12, 2024.
Claims priority of application No. 202311196894.1 (CN), filed on Sep. 15, 2023.
Int. Cl. H04J 3/06 (2006.01)
CPC H04J 3/0638 (2013.01) 19 Claims
OG exemplary drawing
 
1. A method for time synchronization based on an optical transmission network, applied to a first user terminal device, wherein the first user terminal device is optically connected to a central office device through an optical splitter, and the method comprises:
selecting a first identity from one or more identities in a first identity set according to a preset selection rule, and adding the first identity to a delay request packet to obtain a first delay request packet carrying the first identity, wherein the preset selection rule comprises a rule for selecting the first identity from the one or more identities, the first identity set is used to identify the first user terminal device, and the one or more identities are used to indicate delay request packets sent by the first user terminal device at different times;
sending the first delay request packet to the central office device through the optical splitter; and
in response to a received first delay request response packet carrying time synchronization information and the first identity, performing time synchronization between the first user terminal device and the central office device based on the time synchronization information and the first identity.