Examples relate to a transmission apparatus, transmission device, transmission method and computer program for a source device, and to a reception apparatus, reception device, reception method and computer program for a destination device. The transmission apparatus is suitable for generating a header of a transmission frame to be transmitted downstream from a source device to a plurality of destination devices via a point to multipoint communication network. The transmission apparatus comprises processing circuitry configured to generate the header based on a plurality data units to be transmitted to the destination devices. Each data unit is designated to be transmitted to one of the destination devices. The processing circuitry wherein the header is generated such, that the header comprises, for each destination device, information on a presence of data for the destination device in the transmission frame associated with the header.