Downlink control information configuration and acquisition method, base station and terminal

A downlink control information configuration and acquisition method, base station and terminal. The base station configures a plurality of sets of received information for the terminal via dedicated high-layer signalling of the terminal, and the base station indicates which set of the plurality of sets of received information is to be used by the terminal to receive a DMRS and/or physical downlink shared channel (PDSCH) using at least one of the following pieces of information: LVRB/DVRB bits allocated by a centralized/distributed virtual resource block in the DCI Format 1A; a control channel mode in which the DCI Format 1A is located: a PDCCH and an ePDCCH; an ePDCCH transmission mode in which the DCI Format 1A is located: a diversity transmission mode and a centralized transmission mode; and an ePDCCH cluster in which the DCI Format 1A is located.