Method and apparatus for updating a vehicle-to-everything (VTX) parameter at a terminal device

Patent metadata

Field	Value
Publication number	US-12439230-B2
Application number	US-202117520135-A
Country	US
Kind code	B2
Filing date	Nov 5, 2021
Priority date	May 6, 2019
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

A communication method, a communications apparatus, and a system are provided, applied to the vehicle-to-everything V2X field, so that a terminal device can obtain an updated V2X parameter, to resolve a problem that communication fails because the terminal device uses an expired V2X parameter. The communication method includes: receiving, by a V2X control network element, parameter update indication information sent by a user data management network element, where the parameter update indication information indicates that a V2X parameter of a terminal device is updated; and sending, by the V2X control network element, an updated V2X parameter to the terminal device based on the parameter update indication information.

First claim

What is claimed is:

1. A communication method comprising:
receiving, by a vehicle-to-everything (V2X) control network element, parameter update indication information from a user data management network element,
wherein the parameter update indication information indicates that a V2X parameter of a terminal device is updated; and

sending, by the V2X control network element, an updated V2X parameter to the terminal device based on the parameter update indication information,
wherein the updated V2X parameter is obtained from the user data management network element.

2. The method according to claim 1 , wherein the parameter update indication information indicates that the terminal device is reachable in a first network, and the V2X control network element is a network element in the first network.

3. The method according to claim 2 , wherein the terminal device is registered with the first network.

4. The method according to claim 1 , wherein the V2X parameter comprises at least one of the following:
a public land mobile network (PLMN) list used for communication through a PC5 interface;
indication information indicating whether to perform communication through the PC5 interface;
a radio resource configuration parameter used for communication through the PC5 interface; or
network selection policy information used for communication through the PC5 interface.

5. The method according to claim 1 , wherein the V2X parameter comprises a mapping relationship between a V2X service and identification information of the terminal device.

6. A communication method comprising:
determining, by a user data management network element, that a vehicle-to-everything (V2X) parameter of a terminal device is updated;
sending, by the user data management network element, parameter update indication information to a V2X control network element,
wherein the parameter update indication information is used to indicate that the V2X parameter of the terminal device is updated; and

sending, by the user data management network element, the updated V2X parameter to the V2X control network element.

7. The method according to claim 6 , wherein determining, by the user data management network element, that the V2X parameter of the terminal device is updated comprises:
receiving, by the user data management network element, parameter delivery request information from a policy control function (PCF) network element,
wherein the parameter delivery request information is used to request the V2X parameter of the terminal device from the user data management network element;

determining, by the user data management network element, a first moment based on the parameter delivery request information;
updating, by the user data management network element, the V2X parameter of the terminal device, and obtaining a second moment at which the V2X parameter is updated; and
determining, by the user data management network element based on the first moment and the second moment, that the V2X parameter of the terminal device is updated.

8. The method according to claim 7 , wherein the first moment is a request moment carried in the parameter delivery request information.

9. The method according to claim 7 , wherein the first moment is a moment at which the parameter delivery request information is received.

10. The method according to claim 6 , wherein determining the V2X parameter of the terminal device is updated comprises at least one of the following cases:
in response to determining that the terminal device is in an unreachable state, determining, by the user data management network element, that the V2X parameter is updated; or
in response to determining that the terminal device is in a deregistered state, determining, by the user data management network element, that the V2X parameter is updated.

11. The method according to claim 6 , wherein the V2X parameter comprises at least one of the following:
a public land mobile network (PLMN) list used for communication through a PC5 interface;
indication information indicating whether to perform communication through the PC5 interface;
a radio resource configuration parameter used for communication through the PC5 interface; or
network selection policy information used for communication through the PC5 interface.

12. The method according to claim 6 , wherein the V2X parameter comprises a mapping relationship between a V2X service and identification information of the terminal device.

13. The method according to claim 6 , wherein determining the V2X parameter of the terminal device is updated comprises determining, by the user data management network element, a change of the V2X parameter stored by the user data management network element.

14. The method according to claim 6 , wherein the parameter update indication information indicates that the terminal device is reachable in a first network, and the V2X control network element is a network element in the first network.

15. The method according to claim 14 , wherein the terminal device is registered with the first network.

16. A vehicle-to-everything (V2X) control network element comprising:
at least one processor, coupled to a memory, wherein the at least one processor is configured to read and execute instructions in the memory, thereby causing the V2X control network element to:
receive parameter update indication information from a user data management network element,
wherein the parameter update indication information indicates that a V2X parameter of a terminal device is updated; and

send an updated V2X parameter to the terminal device based on the parameter update indication information,
wherein the updated V2X parameter is obtained from the user data management network element.

17. The V2X control network element according to claim 16 , wherein the parameter update indication information indicates that the terminal device is reachable in a first network, and the V2X control network element is a network element in the first network.

18. The V2X control network element according to claim 17 , wherein that the terminal device is reachable in the first network comprises the terminal device is registered with the first network.

19. The V2X control network element according to claim 16 , wherein the V2X parameter comprises at least one of the following:
a public land mobile network (PLMN) list used for communication through a PC5 interface;
indication information indicating whether to perform communication through the PC5 interface;
a radio resource configuration parameter used for communication through the PC5 interface; or
network selection policy information used for communication through the PC5 interface.

20. The V2X control network element according to claim 16 , wherein the V2X parameter comprises a mapping relationship between a V2X service and identification information of the terminal device.

Assignees

• Huawei Tech Co Ltd

Inventors

• Li Meng
• Ying Jiangwei
• Yang Yanmei

Classifications

• H04W24/02

  Arrangements for optimising operational condition · CPC title

• H04W4/40 Primary

  for vehicles, e.g. vehicle-to-pedestrians [V2P] · CPC title

• H04W48/12 Primary

  using downlink control channel · CPC title