Abstract: Embodiments of the present disclosure relate to solutions for reducing interference and optimizing parameter. A first device measures interference on a frequency resource in a scheduling interval. If strength of the interference exceeds a threshold, the first device determines an interfering device by using a model trained with strength of previous interference and previous scheduling information of a plurality of candidate devices. In this way, the interfering device may be identified accurately and quickly and the interference may be reduced accordingly. In addition, a second device determines and transmits performance information to a third device. Then, the second device receives a parameter for adjusting transmission power from a third device. The parameter is determined based on respective performance information of a plurality of devices comprising the second device to maximum overall performance of the plurality of devices. In this way, the overall performance of the communication is improved.