The present disclosure provides a method performed by a base station. The method comprises: obtaining a coverage enhancement level of a User Equipment (UE); determining Physical Downlink Control Channel (PDCCH) configuration information for the UE based on the coverage enhancement level of the UE; determining Physical Downlink Shared Channel (PDSCH) configuration information for the UE based on the coverage enhancement level of the UE; and modifying a Downlink Control Information (DCI) configuration parameter to add the PDCCH configuration information and the PDSCH configuration information. Also provided are a method performed by a UE, a base station and a UE. With the present disclosure, it is possible to increase resource utilization for LTE to support MTC UEs, improve frequency spectrum/energy efficiency, and reduce time/frequency resource conflicts between cells.