According to an aspect of the present invention, a data receiving apparatus includes a receiver configured to receive a one-way communication packet transmitted from a data transmitting apparatus； a calculator configured to calculate a reception signal strength of the packet at the receiver； a comparison unit configured to compare the calculated reception signal strength with a threshold value； a generation unit configured to generate assistance information relating to transmission power of the data transmitting apparatus if the reception signal strength exceeds a threshold value as a result of the comparison； and an output unit configured to output the assistance information.
