Title:
CLOCK SYNCHRONIZATION GUARANTEE METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2024/032304
Kind Code:
A1
Abstract:
The present application relates to the technical field of communications. Disclosed are a clock synchronization guarantee method and apparatus, which can guarantee the clock synchronization between a terminal device and a user plane function network element when an access network device, which times the terminal device, and the user plane function network element are asynchronous in clock. The method comprises: a clock management network element receiving a general precision time protocol (gPTP) clock synchronization request from an application function network element, wherein the gPTP clock synchronization request comprises an identifier of a target user plane function network element and an identifier of a target terminal device; when the target user plane function network element and the target terminal device are asynchronous in clock, the clock management network element acquiring a clock offset between the target user plane function network element and a target access network device, wherein the target access network device is an access network device which times the target terminal device; and the clock management network element sending the clock offset to the target user plane function network element or the target terminal device, wherein the clock offset is used by the target access network device or the target terminal device for clock synchronization.
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Inventors:
ZANG XIN (CN)
ZHOU RUNZE (CN)
WANG YUAN (CN)
ZHOU RUNZE (CN)
WANG YUAN (CN)
Application Number:
PCT/CN2023/106838
Publication Date:
February 15, 2024
Filing Date:
July 11, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L1/00
Foreign References:
| US20220174625A1 | 2022-06-02 | |||
| CN111106889A | 2020-05-05 | |||
| CN111490842A | 2020-08-04 |
Other References:
NOKIA, NOKIA SHANGHAI-BELL: "UDR service for mapping IMS Public Identity to HSS Group ID for HSS selection", 3GPP DRAFT; S2-1907401 DISCUSSION UDR HSS GOUP ID MAPPING SERVICE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. Sapporo, Japan; 20190624 - 20190628, 18 June 2019 (2019-06-18), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051752361
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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