According to the embodiments of the disclosure, under the heterogeneous network scenario and in a case where common baseband processing is performed between the low power transmission node and the macro base station, when the carrier aggregation is performed between base stations, the uplink PUCCH/PUSCH transmission is transmitted on the aggregated carriers of the low power transmission node as far as possible. If the CoMP transmission is performed between the macro base station and the low power node and uplink data transmission (including the PUCCH, the PUSCH, the SRS and so on) needs to be performed, then the path loss of the low power node on a multi-point transmission frequency band is predicted with reference to the path loss where the low power node separately transmits a carrier, thereby obtaining path loss compensation values of the uplink power control of a macro base station node and the low power node, to perform more accurate uplink power control.

A wireless communication system according to an embodiment of the disclosure is described hereinafter in conjunction with FIG. 6. As shown in FIG. 6, the wireless communication system 100 according to an embodiment of the disclosure includes a macro base station 210, a low power node 220, and a wireless communication device 300. The low power node 220 and the macro base station 210 are in common baseband, and the wireless communication device 300 may communicate with the low power node 220 and the macro base station 210 via multiple component carriers.

The wireless communication device 300 may include a receiving unit 310, a transmitting unit 320, a control unit 330 and the like.