A method for transmitting channel state information by a terminal, the method comprising: receiving, by the terminal, a radio resource control, RRC, message including relation information related to a channel state information reference signal, CSI-RS, and a physical antenna from a base station, wherein the relation information includes first configuration information of a first CSI process regarding a first CSI-RS and a first physical antenna of the base station transmitting the first CSI-RS, wherein the relation information further includes second configuration information of a second CSI process regarding a second CSI-RS and a second physical antenna of the base station transmitting the second CSI-RS; performing the first CSI process for measuring first channel state information between the terminal and the first physical antenna of the base station, based on the first configuration information; performing the second CSI process for measuring second channel state information between the terminal and the second physical antenna of the base station, based on the second configuration information, wherein the second configuration information further includes a first identifier of the first CSI-RS process; and wherein the first CSI process is configured to not report the first channel state information, wherein the second CSI process is configured to report, to the base station, the second channel state information and the first channel state information measured by the first CSI-RS process identified based on the first identifier, wherein the first physical antenna and the second physical antenna of the base station are included in one antenna array, wherein the RRC message further includes reference CSI process information representing the second CSI process configured to report both of the first channel state information and the second channel state information. receiving, by the terminal, a radio resource control, RRC, message including relation information related to a channel state information reference signal, CSI-RS, and a physical antenna from a base station, wherein the relation information includes first configuration information of a first CSI process regarding a first CSI-RS and a first physical antenna of the base station transmitting the first CSI-RS, wherein the relation information further includes second configuration information of a second CSI process regarding a second CSI-RS and a second physical antenna of the base station transmitting the second CSI-RS; performing the first CSI process for measuring first channel state information between the terminal and the first physical antenna of the base station, based on the first configuration information; performing the second CSI process for measuring second channel state information between the terminal and the second physical antenna of the base station, based on the second configuration information, wherein the second configuration information further includes a first identifier of the first CSI-RS process; and wherein the first CSI process is configured to not report the first channel state information, wherein the second CSI process is configured to report, to the base station, the second channel state information and the first channel state information measured by the first CSI-RS process identified based on the first identifier, wherein the first physical antenna and the second physical antenna of the base station are included in one antenna array, wherein the RRC message further includes reference CSI process information representing the second CSI process configured to report both of the first channel state information and the second channel state information. <EOS>