7 Deployment models

23.2863GPPApplication layer support for Vehicle-to-Everything (V2X) servicesFunctional architecture and information flowsRelease 18TS

7.1 General

This clause describes deployments of the functional model specified in clause 6. The reference points utilized from underlying 3GPP network as specified in clause 6.5 is represented as 3GPP interfaces in the deployment models.

NOTE: The representation of SEAL functionalities in the vertical deployment is specified in 3GPP TS 23.434 [6].

7.2 Deployment of VAE server

The VAE server deployments can be centralized and distributed.

7.2.1 Centralized deployments

A centralized deployment is where a single VAE server offers the VAE capabilities to one or more V2X application specific server. The VAE server and the V2X application specific server may be co-located in a single physical entity. The VAE server may be deployed either in the PLMN operator domain or deployed in the V2X service provider domain. The VAE server connects with the 3GPP network systems (EPS, 5GS) in one or more PLMN operator domain. When VAE server and V2X application specific server are co-located in a single physical entity, the Vs reference point between the VAE server and the V2X application enabler server may not be used.

Figure 7.2.1-1 illustrates a deployment of the VAE server and the V2X application specific server in a single physical entity and deployed in V2X service provider domain. The VAE server may be deployed in a separate physical entity from the V2X application specific server in the V2X service provider domain. In such deployments, the Vs reference point is used for the communication between the VAE server and the V2X application specific server.

Figure 7.2.1-1: VAE server co-located with V2X application specific server in a single physical entity

Figure 7.2.1-2 illustrates a deployment of the VAE server in the PLMN operator domain and the V2X application specific server in the V2X service provider domain. The Vs reference point is used for the communication between V2X application specific server and the VAE server. The VAE server may support multiple V2X application specific servers.

Figure 7.2.1-2: VAE server deployed in the PLMN operator domain

Figure 7.2.1‑3 illustrates a deployment of the VAE server which connects to the 3GPP network systems (EPS, 5GS) in multiple PLMN operator domain. The VAE server may be co-located with the V2X application specific server in a single physical entity or deployed in different physical entities.

Figure 7.2.1-3: Deployment of VAE server with connections to 3GPP network systems in multiple PLMN operator domains

Figure 7.2.1‑4 illustrates a deployment of the VAE server which provides VAE capabilities to multiple V2X application specific servers over Vs reference point and connects to the 3GPP network systems (EPS, 5GS) in multiple PLMN operator domain.

Figure 7.2.1-4: Deployment of VAE server with connections to multiple V2X application specific servers

7.2.2 Distributed deployment

The distributed deployment is where multiple VAE servers are deployed either in the V2X service provider domain or in the PLMN operator domain. The distributed deployment of the VAE servers provide geographical coverage or support multiple PLMN operator domains in a geographical location. The VAE servers interconnect via VAE-E and the Vs reference point is used for interaction between V2X application specific server and the VAE server.

Figure 7.2.2-1 illustrates the deployment of VAE servers in multiple PLMN operator domain and provides VAE capabilities to the V2X application specific server deployed in the V2X service provider domain. The V2X application specific server connects via Vs to the VAE servers.

Figure 7.2.2-1: Distributed deployment of VAE servers in multiple PLMN operator domain without interconnection between VAE servers

Figure 7.2.2-2 illustrates the deployment of multiple VAE servers deployed in multiple PLMN operator domains. The V2X application specific server connects via Vs to the VAE server. The interconnection between VAE servers is via VAE-E and supports the V2X applications for the V2X UEs connected to the VAE servers in multiple PLMN operator domains.

Figure 7.2.2-2: Distributed deployment of VAE servers in multiple PLMN operator domain with interconnection between VAE servers

Figure 7.2.2-3 illustrates the deployment of multiple VAE servers in PLMN operator domain based on geographical coverage. The V2X application specific server connects via Vs to the VAE server 1. The VAE servers interconnect via VAE-E and support the V2X communications to the V2X UEs connected to the VAE servers.

Figure 7.2.2-3: Distributed deployment of VAE servers in PLMN operator domain

Figure 7.2.2-4 illustrates the deployment of multiple VAE servers in the V2X service provider domain where VAE server 1 and VAE server 2 connect with 3GPP network system of PLMN operator domain 1 and PLMN operator domain 2 respectively. The PLMN operator domains provide coverage to different geographical areas. The V2X application specific server connects via Vs to the VAE server 1. The VAE servers interconnect via VAE-E and support the V2X applications for the V2X UEs connected via both the PLMN operator domains.

Figure 7.2.2-4: Distributed deployment of VAE servers in V2X service provider domain