Patent ID: 11877251
Assignee: SHENZHEN AI-LINK CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A time synchronization method, comprising:
receiving, by a policy control function PCF, a target virtual dedicated link acquisition request sent by a session management function SMF according to a target PDU session establishment request, wherein the target virtual dedicated link acquisition request comprises a target virtual dedicated link identifier;
acquiring, by the PCF, target virtual dedicated link information corresponding to a terminal according to the target virtual dedicated link identifier, wherein the target virtual dedicated link information comprises first interface information, second interface information and target PDU session information, a first interface indicated by the first interface information is connected to a first clock node to be synchronized, and a second interface indicated by the second interface information is connected to a second clock node to be synchronized; and
sending, by the PCF, the target virtual dedicated link information to the SMF, such that the SMF sends a target forwarding rule to a user plane function UPF according to the target virtual dedicated link information, and establishing, by the UPF, a target PDU session with the terminal according to the target forwarding rule, so as to transmit a time synchronization message through the target PDU session and the first interface and the second interface indicated by the target virtual dedicated link information.