A method of configuring a channel state information - reference signal, CSI-RS, performed by a base station, comprising generating, by the base station, a signaling comprising configuration information of a CSI-RS; and transmitting, by the base station, the signaling comprising the configuration information of the CSI-RS, wherein the configuration information comprises a CSI-RS port number, an index of a CSI-RS resource pattern selected from candidate CSI-RS resource patterns and a CSI-RS subframe configuration; wherein the CSI-RS resource pattern comprises at least one of: a CSI-RS resource pattern transmitted on a downlink normal subframe, and a CSI-RS resource pattern transmitted on a downlink pilot time slot, DwPTS; and the CSI-RS subframe configuration comprises: a CSI-RS subframe configuration in which it is configured that the CSI-RS is transmitted on both the DwPTS and the downlink normal subframe; wherein each of candidate CSI-RS resource patterns on the DwPTS has corresponding one of candidate CSI-RS resource patterns on the downlink normal subframe; when the CSI-RS subframe configuration is a CSI-RS subframe configuration in which it is configured that the CSI-RS is transmitted on both the DwPTS and the downlink normal subframe, the index of the CSI-RS resource pattern indicates both the CSI-RS resource pattern transmitted on the DwPTS and the CSI-RS resource pattern transmitted on the downlink normal subframe that corresponds to the CSI-RS resource pattern transmitted on the DwPTS; the candidate CSI-RS resource patterns on the DwPTS in a third-type CSI-RS transmission scenario are the same as the candidate CSI-RS resource patterns on the DwPTS in a fourth-type CSI-RS transmission scenario; and the same candidate CSI-RS resource patterns on the DwPTS in the third-type CSI-RS transmission scenario and on the DwPTS in the fourth-type CSI-RS transmission scenario have different indexes; wherein the third-type CSI-RS transmission scenario is provided for transmitting the CSI-RS on a frame structure of Frequency Division Duplex, FDD, or a frame structure of Time Division Duplex, TDD, in a case of Extended Cyclic Prefix, ECP, where CSI-RSs of four ports are transmitted on a transmission subframe; and the fourth-type CSI-RS transmission scenario is provided for transmitting the CSI-RS on the frame structure of TDD in the case of ECP, where CSI-RSs of two ports are transmitted on a transmission subframe. generating, by the base station, a signaling comprising configuration information of a CSI-RS; and transmitting, by the base station, the signaling comprising the configuration information of the CSI-RS, wherein the configuration information comprises a CSI-RS port number, an index of a CSI-RS resource pattern selected from candidate CSI-RS resource patterns and a CSI-RS subframe configuration; wherein the CSI-RS resource pattern comprises at least one of: a CSI-RS resource pattern transmitted on a downlink normal subframe, and a CSI-RS resource pattern transmitted on a downlink pilot time slot, DwPTS; and the CSI-RS subframe configuration comprises: a CSI-RS subframe configuration in which it is configured that the CSI-RS is transmitted on both the DwPTS and the downlink normal subframe; wherein each of candidate CSI-RS resource patterns on the DwPTS has corresponding one of candidate CSI-RS resource patterns on the downlink normal subframe; when the CSI-RS subframe configuration is a CSI-RS subframe configuration in which it is configured that the CSI-RS is transmitted on both the DwPTS and the downlink normal subframe, the index of the CSI-RS resource pattern indicates both the CSI-RS resource pattern transmitted on the DwPTS and the CSI-RS resource pattern transmitted on the downlink normal subframe that corresponds to the CSI-RS resource pattern transmitted on the DwPTS; the candidate CSI-RS resource patterns on the DwPTS in a third-type CSI-RS transmission scenario are the same as the candidate CSI-RS resource patterns on the DwPTS in a fourth-type CSI-RS transmission scenario; and the same candidate CSI-RS resource patterns on the DwPTS in the third-type CSI-RS transmission scenario and on the DwPTS in the fourth-type CSI-RS transmission scenario have different indexes; wherein the third-type CSI-RS transmission scenario is provided for transmitting the CSI-RS on a frame structure of Frequency Division Duplex, FDD, or a frame structure of Time Division Duplex, TDD, in a case of Extended Cyclic Prefix, ECP, where CSI-RSs of four ports are transmitted on a transmission subframe; and the fourth-type CSI-RS transmission scenario is provided for transmitting the CSI-RS on the frame structure of TDD in the case of ECP, where CSI-RSs of two ports are transmitted on a transmission subframe.