To route V2X messages or any traffic for V2X purposes to/from V2X Application Server(s) in a local Data Network (DN) close to NG-RAN, V2X Application Server operated by e.g. operators, OEMs, road authorities, can use the Application Function (AF) influence on traffic routing feature defined in clause 5.6.7 of TS 23.501. The V2X Application Server that sends the AF request for AF influence based edge computing for V2X services can be the same V2X Application Server to/from which the traffic is routed. When Application Function influence on traffic routing is applied, a local UPF can be selected to route the traffic to the local V2X Application Server. Usage of Application Function (AF) influence on traffic routing feature and its application for SMF to control UPF data forwarding are defined in clause 5.6.7 of TS 23.501 and clause 5.8.2 of TS 23.501.

This Annex presents examples how RSU can be implemented in 5GS, as shown in TS 23.285. Figure B-1 shows a UE-type RSU, which combines a UE with the V2X application logic.

Figure B-2 shows one example of gNB-type RSUs. In this example, the RSU comprises a gNB, a collocated UPF, and a V2X Application Server.