ogical V2X control function in each public land mobile network (PLMN) that supports V2X services. If multiple V2X control functions are deployed within the same PLMN, then the method to locate the specific V2X control function, for example, through a database lookup, is not specified by 3GPP. The V2X control function is used to configure the UEs with necessary parameters for V2X communication. It is used to provide the UEs with network-specific parameters that allow the UEs to use V2X service in that PLMN. The V2X control function is also used to configure the UEs with parameters that are needed when the UEs are not served by an LTE network. The V2X control function may also be used to obtain V2X user service descriptions (USDs) SO that the UEs can receive eMBMS-based V2X traffic through V2 reference point from the V2X application server. V2X control function may also obtain the parameters required for V2X communications over PC5 reference point, or from the V2X application server via V2 reference point. The V2X control function in home PLMN can be always reached, if home-routed configura- tion is applied for packet data network (PDN) connection (e.g., the P-GW is part of the home PLMN), when such function is supported by the home PLMN. In the case of local breakout (e.g., the P-GW is part of the visited PLMN), a V2X control function proxy can be deployed by the visited PLMN to support UE to home V2X control function logical connection, if inter-PLMN signaling is required. The UE is not aware of these transactions and it will not know which access point name (APN) can be used for communication with the V2X control function unless the specific APN information is configured in the UE indicating that this APN provides signaling connectivity between the UE and the home V2X control function. The V2X control function of the home PLMN is discovered through interaction with the domain name service (DNS) function [2]. The V2X application server supports receiving uplink data from the UE over a unicast connection and deliv