Patent ID: 7672334

Claim:
A wireless communication apparatus comprising: a memory to store reference data including a plurality of transmission rates usable for transmission of an aggregated frame including a plurality of frames and a plurality of reference frame lengths of the aggregated frame corresponding to the transmission rates, respectively, a throughput obtained with one of the transmission rates and a reference frame length of the reference frame lengths which corresponds to the one of the transmission rates is higher than any throughputs obtained with any frame length at another transmission rate lower than the one of the transmission rates; a selecting unit configured to select one or more trial transmission rates among the transmission rates and one or more trial frame lengths among the reference frame lengths and frame lengths other than the reference frame lengths; a transmission unit configured to transmit a trial aggregated frame with one of the trial transmission rates selected by the selecting unit, a frame length of the trial aggregated frame corresponding to one of the trial frame lengths selected by the selecting unit; a reception unit configured to receive a response corresponding to the trial aggregated frame transmitted; a determining unit configured to determine whether communication with the one of the trial transmission rates and the one of the trial frame lengths is possible or not, based on the response received; and a control unit configured to set the one of the trial transmission rates and the one of the trial frame lengths, with which the communication is determined to be possible, to one of an initial value and a maximum value of a transmission rate for transmitting the aggregated frame and a frame length of the aggregated frame, respectively.