A mobile station apparatus comprising: a reception unit configured to and/or programmed to receive transmission power control, TPC, commands and a first parameter associated with accumulation of TPC commands; and a transmission unit configured to and/or programmed to: transmit, in subframe i in a certain cell, a sounding reference signal with a transmission power based on at least a second parameter and a third parameter, the third parameter being configured by higher layers; and transmit, in subframe j in the certain cell, a sounding reference signal with a transmission power based on at least a fourth parameter and a fifth parameter, the fifth parameter being configured by the higher layers, wherein the mobile station apparatus is further configured to in the case that the accumulation is enabled on the basis of the received first parameter: calculate a value of the second parameter for the subframe i in the certain cell by adding a value of the second parameter for subframe i-1 in the certain cell to a value of a TPC command; and calculate a value of the fourth parameter for the subframe j in the certain cell by adding a value of the fourth parameter for subframe j-1 in the certain cell to a value of a TPC command. a reception unit configured to and/or programmed to receive transmission power control, TPC, commands and a first parameter associated with accumulation of TPC commands; and a transmission unit configured to and/or programmed to: transmit, in subframe i in a certain cell, a sounding reference signal with a transmission power based on at least a second parameter and a third parameter, the third parameter being configured by higher layers; and transmit, in subframe j in the certain cell, a sounding reference signal with a transmission power based on at least a fourth parameter and a fifth parameter, the fifth parameter being configured by the higher layers, wherein the mobile station apparatus is further configured to transmit, in subframe i in a certain cell, a sounding reference signal with a transmission power based on at least a second parameter and a third parameter, the third parameter being configured by higher layers; and transmit, in subframe j in the certain cell, a sounding reference signal with a transmission power based on at least a fourth parameter and a fifth parameter, the fifth parameter being configured by the higher layers, wherein the mobile station apparatus is further configured to in the case that the accumulation is enabled on the basis of the received first parameter: calculate a value of the second parameter for the subframe i in the certain cell by adding a value of the second parameter for subframe i-1 in the certain cell to a value of a TPC command; and calculate a value of the fourth parameter for the subframe j in the certain cell by adding a value of the fourth parameter for subframe j-1 in the certain cell to a value of a TPC command. calculate a value of the second parameter for the subframe i in the certain cell by adding a value of the second parameter for subframe i-1 in the certain cell to a value of a TPC command; and calculate a value of the fourth parameter for the subframe j in the certain cell by adding a value of the fourth parameter for subframe j-1 in the certain cell to a value of a TPC command.