Patent ID: 8335267

Claim:
A mobile station for transmitting a retransmission packet corresponding to a transmission packet to a base station according to a synchronous retransmission control scheme in single-carrier FDMA (Frequency Division Multiple Access) radio access, comprising: a control unit configured to change at least one parameter for the retransmission packet from that of the transmission packet, where the at least one parameter is selected from a data modulation scheme; a channel coding rate; a puncturing pattern; a spreading factor; a frequency bandwidth; a frequency allocation position; transmission power; and a storage unit configured to store a pattern used for changing the parameter for the retransmission packet, the pattern being common to the base station and the mobile station, wherein the control unit changes a first portion of the at least one parameter for the retransmission packet based on a control signal transmitted from the base station; and the control unit changes a second portion of the at least one parameter for the retransmission packet based on the pattern stored in the storage unit.