As shown in FIG. 2, at step S210, user equipment receives a downlink signal transmitted by the low power node and the macro base station. In FIG. 1, the communication of the UE 3 with the macro base station 1 and the low power node 2 is schematically shown. For example, when the UE 3 is within the coverage area of the macro base station 1 and also within the coverage area of the low power node 2, communication between the macro base station 1 and the UE 3 is performed via a C-plane (control plane), and communication between the low power node 2 and the UE 3 is performed via a U-plane (user plane).
Next, at step S220, uplink signals are transmitted to the low power node and the macro base station. For example, as shown in FIG. 1, the UE 3 may transmit an uplink signal to the low power node 2, and may also transmit an uplink signal to the macro base station 1.
Finally, at step S230, all of first uplink signals of the uplink signals are transmitted to the low power node as a receiving node. The first uplink signals here may include, but are not limited to, a PUCCH signal and/or a PUSCH signal.
