Patent ID: 8611888

Claim:
A method for controlling a terminal device comprising: determining a distortion level on a downlink band of the terminal device when using at least one output power restriction value for output power for at least one uplink band of the terminal device, and performing power restriction control with respect to the at least one output power restriction value on the basis of the determined distortion level and a preconfigured distortion threshold condition, wherein the power restriction control comprises: comparing the determined distortion level with the preconfigured distortion threshold condition, and controlling the at least one output power restriction value based on the comparison result, said controlling comprising: decreasing the at least one output power restriction value by a specified or adjustable decrease amount, when the determined distortion level is below the preconfigured distortion threshold condition, or increasing the at least one output power restriction value by a specified or adjustable decrease amount or to a previously valid output power restriction value, when the determined distortion level is above the preconfigured distortion threshold condition, or maintaining the at least one output power restriction value, when the determined distortion level meets the preconfigured distortion threshold condition.