A terminal device comprising: a display control unit configured to, in a case where information on a plurality of parameters is provided by a base station with respect to a radio communication service, use the provided information and control the display of a parameter-deciding screen for deciding values of the plurality of parameters, wherein the plurality of parameters each indicate user's request with respect to the radio communication service and depend on each other; and the information on the plurality of parameters includes information indicating respective parameters included in the plurality of parameters and information indicating a dependence relation between the plurality of parameters; wherein the display control unit is configured to control the display of the parameter deciding screen in a manner that the values of the plurality of parameters are shown, the display control unit is configured to control the display of the parameter-deciding screen in a manner that the displayed values of the plurality of parameters change in response to a user operation, and wherein the displayed values of the plurality of parameters maintain a dependence relation between the plurality of parameters; a parameter deciding unit configured to calculate and decide values of the plurality of user parameters in response to the user operation; an acquisition unit configured to acquire the decided values of the plurality of parameters, wherein the acquired values of the plurality of parameters are used for changing control of the radio communication service; and a communication processing unit and a radio communication unit configured to transmit the acquired values of the plurality of parameters to the base station for the base station to change control of the radio communication service using the acquired values of the plurality of parameters. a display control unit configured to, in a case where information on a plurality of parameters is provided by a base station with respect to a radio communication service, use the provided information and control the display of a parameter-deciding screen for deciding values of the plurality of parameters, wherein the plurality of parameters each indicate user's request with respect to the radio communication service and depend on each other; and the information on the plurality of parameters includes information indicating respective parameters included in the plurality of parameters and information indicating a dependence relation between the plurality of parameters; wherein the display control unit is configured to control the display of the parameter deciding screen in a manner that the values of the plurality of parameters are shown, the display control unit is configured to control the display of the parameter-deciding screen in a manner that the displayed values of the plurality of parameters change in response to a user operation, and wherein the displayed values of the plurality of parameters maintain a dependence relation between the plurality of parameters; a parameter deciding unit configured to calculate and decide values of the plurality of user parameters in response to the user operation; an acquisition unit configured to acquire the decided values of the plurality of parameters, wherein the acquired values of the plurality of parameters are used for changing control of the radio communication service; and a communication processing unit and a radio communication unit configured to transmit the acquired values of the plurality of parameters to the base station for the base station to change control of the radio communication service using the acquired values of the plurality of parameters.