COMMUNICATION TERMINAL APPARATUS AND WIRELESS TRANSMISSION METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a communication terminal apparatus and a wireless communication method that exhibit a shorter time period required, until a start of communication and causes the throughput in the wireless communication system to be less likely to be reduced. PSOLUTION: When the number of transmission notified by a response determining part 107 is zero, a subchannel in use selecting part 108 selects a subchannel which exhibits the highest-order sub-channel of the reception qualities of the subchannels notified by a reception quality measuring part 106 and then notifies the selected subchannel to a subchannel allocating part 113. In addition, when the notified number of retransmissions is one or more, a subchannel which exhibits lower order reception quality than the highest-order reception quality by the informed number of retransmissions is selected based on the reception qualities of the subchannels notified by the reception quality measuring part 106 for a pilot signal, received after a transmission of the latest access request signal, and then the selected subchannel is notified to the subchannel allocating part 113. PCOPYRIGHT: (C)2006,JPO&NCIPI