A communication method for a radio communication system includes a first radio communication apparatus for designating a transmission region and a second radio communication apparatus for transmitting a radio signal in the designated transmission region. The first radio communication apparatus designates a transmission region of data and a control signal for the second radio communication apparatus and designates a type of data to be transmitted in the transmission region. The second radio communication apparatus transmits, in the designated transmission region, transmission data and a control signal indicating that the transmission data is transmitted in accordance with the designated type of data or that the transmission data is not transmitted in accordance with the designated type of data.