Patent ID: 8345563

Claim:
A data transmission method for transmitting data on an uplink from a mobile station to a wireless base station in a wireless communication system through frequency division multiplexing, said data transmission method comprising: specifying, by a wireless base station, coding rates including a coding rate of a control signal and a coding rate of a data signal for transmission parameters in a Transmit Time Interval (TTI) scheduled in response to a transmission request, said coding rates of the control signal and the data signal satisfying a required reception quality defined for the control signal and the data signal; and applying, by a mobile station transmitting the transmission request, the coding rates to the control signal and the data signal in the TTI to generate a coded control signal and a coded data signal, time-division multiplexing the coded control signal and the coded data signal to generate constant transmission-power transmission data, and sending the generated constant transmission-power transmission data to said wireless base station, said coding rates being included in the transmission parameters and specified for the control signal and the data signal, wherein said wireless base station specifies the coding rate of the control signal based on a size of the data signal before coding included in the transmission parameters, said data transmission method further comprising: calculating, by said mobile station, the coding rate of the control signal, specified by said wireless base station, from a transmission data size, specified by the transmission parameters, and the size of the data signal before coding according to a rule known between said mobile station and said wireless base station, and estimating, by said wireless base station, a size of the control signal added to transmission data to calculate the size of the data signal before coding and including the calculated size of the data signal in the transmission parameters for transmission.