US Patent 10971006 Target vehicle selection and message delivery in vehicular systems

According to an aspect, a method for selecting target vehicles for transmission by a vehicular message distribution entity is provided. Initially, map information and driving context information of a plurality of vehicles is maintained in a database of the vehicular message distribution entity in a communications system. Upon receiving from a first source vehicle a vehicular message comprising at least driving context information, the vehicular message distribution entity selects one or more vehicles in proximity of the first source vehicle from the plurality of vehicles based on geographical locations of said vehicles. Then, the vehicular message distribution entity further selects a first set of one or more target vehicles from the one or more vehicles based on driving context information and the map information. Finally, the vehicular message distribution entity causes sending the vehicular message to the first set using unicast transmission.