Content for TS 23.287 Word version: 18.4.0

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4.2.2 AF-based service parameter provisioning for V2X communications 4.2.2A MBS for Uu based V2X architecture reference model 4.2.3 Reference points 4.2.4 Service-based interfaces
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4.2.2 AF-based service parameter provisioning for V2X communications p. 12

The 5G System provides NEF services to enable communication between NFs in the PLMN and V2X Application Server. Figure 4.2.2-1 shows the high level view of AF-based service parameter provisioning for V2X communications. The V2X Application Server may provide V2X service parameters to the PLMN via NEF. The NEF stores the V2X service parameters in the UDR.

Reproduction of 3GPP TS 23.287, Fig. 4.2.2-1: 5G System architecture for AF-based service parameter provisioning for V2X communications

Figure 4.2.2-1: 5G System architecture for AF-based service parameter provisioning for V2X communications

4.2.2A MBS for Uu based V2X architecture reference model |R18| p. 13

The reference architectures for MBS for Uu based V2X communication are based on the MBS reference architectures specified in clause 5.1 of TS 23.247.

Configuration options at Service and/or Application for MBS specified in Annex A of TS 23.247 and Interworking at reference points MB2 and xMB specified in Annex C of TS 23.247, can be applied for Uu based V2X communication via MBS.

The V2X Application Server acts as an AF/AS defined in clause 5.1 and Annex A of TS 23.247.

4.2.3 Reference points p. 13

V1:

The reference point between the V2X applications in the UE and in the V2X Application Server. This reference point is out of scope of this specification.

V5:

The reference point between the V2X applications in the UEs. This reference point is not specified in this release of the specification.

PC5:

The reference point between the UEs, and it includes the LTE based PC5 and/or NR based PC5.

N1:

In addition to the relevant functions defined in TS 23.501 for N1, in the case of V2X Service it is also used to convey the V2X policy and parameters (including service authorization) from AMF to UE and to convey the UE's V2X Capability and PC5 Capability for V2X information from UE to AMF.

N2:

In addition to the relevant functions defined in TS 23.501 for N2, in the case of V2X Service it is also used to convey the V2X policy and parameters (including service authorization) from AMF to NG-RAN.

Uu:

The reference point between the UE and the NG-RAN.

4.2.4 Service-based interfaces p. 14

Nudm:

In addition to the relevant services defined in TS 23.501 for Nudm, in the case of V2X Service, services provided by UDM are used to get V2X Service related subscription information to AMF during Initial registration procedure or UE Configuration Update (UCU) procedure to inform AMF subscription information has changed.

Npcf:

In addition to the relevant services defined in TS 23.501 for Npcf, in the case of V2X Service, services provided by H-PCF are used to provide V2X Service related parameters to V-PCF for UE and NG-RAN in the roaming case.

Nudr:

In addition to the relevant services defined in TS 23.501 for Nudr, in the case of V2X Service, services provided by UDR are used to notify the PCF and the UDM of the update of the V2X Service related information.

Nnef:

In addition to the relevant services defined in TS 23.501 for Nnef, in the case of V2X Service, services provided by NEF are used by the V2X Application Server to update V2X Service related information of 5GC.

Namf:

In addition to the relevant services defined in TS 23.501 for Namf, in the case of V2X Service, services provided by AMF are consumed by PCF to provide the V2X Service related parameters for the UE and the NG-RAN to AMF, and to enable the AMF create or update UE context related to V2X service.

Nnrf:

In addition to the relevant services defined in TS 23.501 for Nnrf, in the case of V2X Service, services provided by NRF are used to discover the PCF that supports V2X.