A radio transmitting apparatus that transmits a packet to a radio receiving apparatus using a hybrid automatic repeat request, HARQ, scheme, comprising: a moving speed acquiring unit configured to acquire a moving speed of a radio communication terminal which is the radio transmitting apparatus or the radio receiving apparatus; a selection unit configured to select a first transmission method that transmits a packet including an information bit at initial transmission and transmits a packet including an error correction bit without including the information bit at retransmission or a second transmission method that transmits a packet including a same information bit and a same error correction bit at both initial transmission and retransmission, based on the moving speed acquired by the moving speed acquiring unit; and a transmitting unit configured to perform initial transmission and retransmission of the packet according to the first transmission method or the second transmission method selected by the selection unit; characterized in that the moving speed acquiring unit (15, 24) is configured to acquire the moving speed at a time interval longer than the retransmission interval, and the selection unit (16a, 23a) is configured to select the first transmission method or second transmission method based on a notified fluctuation value of the channel quality measured by a channel quality measuring unit of the radio receiving apparatus in addition to the moving speed acquired by the moving speed acquiring unit; wherein when the moving speed acquired by the moving speed acquiring unit is equal to or below a first threshold, the selection unit is configured to select the first transmission method, whereas when the moving speed acquired by the moving speed acquiring unit is greater than the first threshold and the fluctuation value of channel quality is equal to or below a second threshold, the selection unit is configured to select the first transmission method, and when the moving speed acquired by the moving speed acquiring unit is greater than the first threshold and the fluctuation value of the channel quality is greater than the second threshold, the selection unit is configured to select the second transmission method. a moving speed acquiring unit configured to acquire a moving speed of a radio communication terminal which is the radio transmitting apparatus or the radio receiving apparatus; a selection unit configured to select a first transmission method that transmits a packet including an information bit at initial transmission and transmits a packet including an error correction bit without including the information bit at retransmission or a second transmission method that transmits a packet including a same information bit and a same error correction bit at both initial transmission and retransmission, based on the moving speed acquired by the moving speed acquiring unit; and a transmitting unit configured to perform initial transmission and retransmission of the packet according to the first transmission method or the second transmission method selected by the selection unit; characterized in that the moving speed acquiring unit (15, 24) is configured to acquire the moving speed at a time interval longer than the retransmission interval, and the selection unit (16a, 23a) is configured to select the first transmission method or second transmission method based on a notified fluctuation value of the channel quality measured by a channel quality measuring unit of the radio receiving apparatus in addition to the moving speed acquired by the moving speed acquiring unit; wherein when the moving speed acquired by the moving speed acquiring unit is equal to or below a first threshold, the selection unit is configured to select the first transmission method, whereas when the moving speed acquired by the moving speed acquiring unit is greater than the first threshold and the fluctuation value of channel quality is equal to or below a second threshold, the selection unit is configured to select the first transmission method, and when the moving speed acquired by the moving speed acquiring unit is greater than the first threshold and the fluctuation value of the channel quality is greater than the second threshold, the selection unit is configured to select the second transmission method.