A communication method of transmitting data from a mobile station to a fixed station via a first dedicated physical data channel and a second dedicated physical data channel which are disposed in an uplink direction from the mobile station to the fixed station , the communication method comprises: - a transmit power margin estimating step of estimating a transmit power margin being a transmit power to be assigned to the data transmission via the second dedicated physical data channel when the data is transmitted via the second dedicated physical data channel , the estimation being performed based on a subtraction of; - the sum total of the powers of all physical channels except the power of the second dedicated physical data channel; from - a maximum transmit power value specifically defined for estimating the transmit power margin, wherein the maximum transmit power value is lower than a value indicating a power capability of the mobile station ; - an evaluation step of evaluating a state of each of candidates for E-TFC (E-DCH Transport Format Combination) which is information for controlling the data transmission via the second dedicated physical data channel , the evaluation being performed by using a transmit power margin estimated in the transmit power margin estimating step; - a selecting step of selecting one of E-TFC to be used for the data transmission via the second dedicated physical data channel from the candidates by using scheduling result information regarding to a maximum amount of uplink resource which the mobile station may use and a result of the evaluation in the evaluation step; - a transmission step of transmitting the data to the fixed station using the E-TFC selected in the selecting step; characterized in that the maximum transmit power value is dependent on a spreading factor, SF, of the second dedicated physical data channel. - a transmit power margin estimating step of estimating a transmit power margin being a transmit power to be assigned to the data transmission via the second dedicated physical data channel when the data is transmitted via the second dedicated physical data channel , the estimation being performed based on a subtraction of; - the sum total of the powers of all physical channels except the power of the second dedicated physical data channel; from - a maximum transmit power value specifically defined for estimating the transmit power margin, wherein the maximum transmit power value is lower than a value indicating a power capability of the mobile station ; - the sum total of the powers of all physical channels except the power of the second dedicated physical data channel; from - a maximum transmit power value specifically defined for estimating the transmit power margin, wherein the maximum transmit power value is lower than a value indicating a power capability of the mobile station ; - an evaluation step of evaluating a state of each of candidates for E-TFC (E-DCH Transport Format Combination) which is information for controlling the data transmission via the second dedicated physical data channel , the evaluation being performed by using a transmit power margin estimated in the transmit power margin estimating step; - a selecting step of selecting one of E-TFC to be used for the data transmission via the second dedicated physical data channel from the candidates by using scheduling result information regarding to a maximum amount of uplink resource which the mobile station may use and a result of the evaluation in the evaluation step; - a transmission step of transmitting the data to the fixed station using the E-TFC selected in the selecting step; characterized in that the maximum transmit power value is dependent on a spreading factor, SF, of the second dedicated physical data channel. <EOS>