Method and apparatus for providing information for vehicle communication services

1. A method, performed by an access and mobility management function (AMF), of providing information for a vehicle-to-everything (V2X) service, the method comprising:

receiving, from a user equipment (UE), a registration request message including information indicating that the UE is a V2X terminal;

receiving, from a unified data management (UDM), subscription information about whether the UE is able to use the V2X service;

based on the registration request message and the subscription information, selecting a policy control function (PCF) supporting the V2X service;

receiving V2X policy information from the selected PCF; and

providing the V2X policy information to a base station.

2. The method of claim 1 , further comprising establishing a policy association with the selected PCF.

3. The method of claim 1 , further comprising:

based on the subscription information received from the UDM, determining whether the UE is allowed to receive the V2X service,

wherein the subscription information comprises authorization information indicating whether the UE is authorized to use the V2X service.

4. The method of claim 1 , wherein the providing of the V2X policy information to the base station comprises providing the V2X policy information to the base station by using a next-generation application protocol (NGAP).

5. The method of claim 1 ,

wherein the selecting of the PCF comprises:

transmitting a message requesting a network repository function (NRF) to discover a PCF supporting the V2X service;

receiving information about the PCF from the NRF; and

selecting the PCF discovered by the NRF, and

wherein the message requesting the discovery of the PCF comprises an indication of support of the V2X service.

6. The method of claim 1 , further comprising: receiving updated V2X policy information from the PCF; storing the updated V2X policy information as part of context information of the UE; and providing the updated V2X policy information to the base station.

7. The method of claim 1 ,

wherein the V2X policy information provided to the base station comprises at least one of quality of service (QoS) parameter information or V2X authorization information, and

wherein the QoS parameter information comprises at least one of identification information of the V2X service or a PC5 QoS parameter.

8. A method, performed by a policy control function (PCF), of providing information for a vehicle-to-everything (V2X) service, the method comprising:

establishing a policy association with an access and mobility management function (AMF);

generating V2X policy information; and

providing the generated V2X policy information to the AMF,

wherein the PCF is selected as a PCF supporting the V2X service, by the AMF, based on a registration request message of a user equipment (UE) and subscription information about whether the UE is able to use the V2X service, and

wherein the registration request message includes information indicating that the UE is a V2X terminal.

9. The method of claim 8 ,

wherein the V2X policy information comprises at least one of quality of service (QoS) parameter information or V2X authorization information, and

wherein the QoS parameter information comprises at least one of identification information of the V2X service or a PC5 QoS parameter.

10. The method of claim 8 , further comprising:

updating the V2X policy information; and

providing the updated V2X policy information to the AMF.

11. An access and mobility management function (AMF) for providing information for a vehicle-to-everything (V2X) service, the AMF comprising:

a transceiver; and

a processor electrically connected to the transceiver and configured to:

receive, from a user equipment (UE), a registration request message including information indicating that the UE is a V2X terminal,

receive, from a unified data management (UDM), subscription information about whether the UE is able to use the V2X service,

based on the registration request message and the subscription information, select a policy control function (PCF) supporting the V2X service,

receive V2X policy information from the selected PCF, and

provide the V2X policy information to a base station.

12. The AMF of claim 11 , wherein the processor is further configured to establish a policy association with the selected PCF.

13. The AMF of claim 11 ,

wherein the processor is further configured to, based on the subscription information received from the UDM, determine whether the UE is allowed to receive the V2X service, and

wherein the subscription information comprises authorization information indicating whether the UE is authorized to use the V2X service.

14. The AMF of claim 11 , wherein the processor is further configured to provide the V2X policy information to the base station by using a next-generation application protocol (NGAP).

15. The AMF of claim 11 ,

wherein, as at least part of the selecting of the PCF, the processor is further configured to:

transmit a message requesting a network repository function (NRF) to discover a PCF supporting the V2X service,

receive information about the PCF from the NRF, and

select the PCF discovered by the NRF, and

wherein the message requesting the discovery of the PCF comprises an indication of support of the V2X service.

16. The AMF of claim 11 , wherein the processor is further configured to: receive updated V2X policy information from the PCF, store the updated V2X policy information as part of context information of the UE, and provide the updated V2X policy information to the base station.

17. The AMF of claim 11 ,

wherein the V2X policy information provided to the base station comprises at least one of quality of service (QoS) parameter information or V2X authorization information, and

wherein the QoS parameter information comprises at least one of identification information of the V2X service or a PC5 QoS parameter.

18. A policy control function (PCF) for providing information for a vehicle-to-everything (V2X) service, the PCF comprising:

a transceiver; and

a processor electrically connected to the transceiver and configured to:

establish a policy association with an access and mobility management function (AMF),

generate V2X policy information, and

provide the generated V2X policy information to the AMF,

wherein the PCF is selected as a PCF supporting the V2X service, by the AMF, based on a registration request message of a user equipment (UE) and subscription information about whether the UE is able to use the V2X service, and

wherein the registration request message includes information indicating that the UE is a V2X terminal.

19. The PCF of claim 18 ,

wherein the V2X policy information comprises at least one of quality of service (QoS) parameter information or V2X authorization information, and

wherein the QoS parameter information comprises at least one of identification information of the V2X service or a PC5 QoS parameter.

20. The PCF of claim 18 , wherein the processor is further configured to:

update the V2X policy information, and

provide the updated V2X policy information to the AMF.