Transmission apparatus, transmission control method, reception apparatus, and reception control method

摘要

Radio resources are saved. The base station 101 determines a possibility of transmitting data to the terminal 102 , and transmits the indicator indicating the possibility of transmitting the data to the terminal 102 . The terminal 102 generates a mode request message for determining a coding rate and a modulation system at the base station 101 , and sets a transmission frequency of the mode request message based on the indicator transmitted from the base station 101 . Accordingly, the mode request message is transmitted from the terminal 102 to the base station 101 at the determined transmission frequency.