Patent ID: 8555125

Claim:
A transmitting apparatus capable of transmitting, together with transmission data, retransmission data in response to a Hybrid Automatic Repeat Request (HARQ) from a receiving apparatus, according to a Modulation and Coding Scheme (MCS) determined based on a request from the receiving apparatus, the transmitting apparatus comprising: a storage portion which stores information indicating a transition of a Frame Error Rate (FER) with respect to a communication quality for each MCS in a case in which an HARQ response is enabled and in a case in which an HARQ response is disabled; an HARQ switching portion which switches whether to enable or disable the HARQ response in accordance with a Quality of Service (QoS) class of data to be transmitted; and an MCS switching portion which switches between an MCS in a case of the HARQ response being enabled and a corresponding MCS in a case of the HARQ response being disabled in accordance with the switching of whether to enable or disable the HARQ response, while referring to the information stored in the storage portion, wherein, when the MCS in the case of the HARQ being enabled is switched into the MCS in the case of the HARQ being disabled, the MCS switching portion switches the MCS so that, with respect to a communication quality derived from the MCS and the FER before switching, the FER after switching becomes equal to or lower than the FER before switching.