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

Claim 0:
1. A time synchronization method, comprising:
sending, by a terminal, a target protocol data unit PDU session establishment request to a session management function SMF according to a routing policy, wherein the target PDU session establishment request comprises a target virtual dedicated link identifier, the target virtual dedicated link identifier is configured to indicate for the SMF to request a policy control function PCF to acquire corresponding target virtual dedicated link information, and determine a target user plane function UPF and generate a target forwarding rule according to the target virtual dedicated link information, the target virtual dedicated link information comprises first interface information, second interface information and target PDU session information, wherein 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
establishing, by the terminal, a target PDU session with the target user plane function UPF to transmit a time synchronization message by the target PDU session and the first interface and the second interface indicated by the target virtual dedicated link information, wherein the target PDU session is a PDU session established by the target UPF according to the target forwarding rule, and the target forwarding rule is sent to the target UPF by the SMF according to the target virtual dedicated link information.