The discovery and establishment of communication groups is described for wireless vehicular communications. Some embodiments include receiving a registration request from a user equipment (UE) in a vehicular environment to provide services over a wireless access in vehicular environments (WAVE) basic service set (WBSS) in wireless channels 5 at a vehicular proximity services (ProSe) function, deciding at the ProSe function to authorize registration of the UE to provide services over the WBSS, and sending a registration response from the ProSe function confirming WBSS information to be used for the services after deciding to authorize the UE.