Downlink physical channel sending method, ue, and base station

Embodiments of the present invention relate to a downlink physical channel sending method, a UE, and a base station. The downlink physical channel sending method comprises: a base station adjusts, when a predetermined trigger condition is satisfied, a system bandwidth of a cell managed by the base station; the base station sends a downlink physical channel of the cell within the adjusted system bandwidth of the cell. Hence, in the embodiments of the present invention, for the cell managed by the base station, the base station dynamically adjusts the system bandwidth of the cell and sends the downlink physical channel of the cell within the adjusted system bandwidth of the cell rather than sending the downlink physical channel of the cell using a fixed system bandwidth, thereby effectively reducing inter-cell interference.