A method for transmitting, by a user equipment, UE, periodic channel state information, CSI, in a wireless communication system, the method comprising: receiving a first downlink control information, DCI, format, which is cyclic redundancy check, CRC, -scrambled with a semi persistent scheduling cell-ratio network temporary identifier, SPS C-RNTI, or a channel state information-semi persistent scheduling cell-radio network temporary identifier, CSI-SPS C-RNTI, via a first physical downlink control channel, PDCCH; activating an uplink semi-persistent scheduling, UL SPS, on a secondary cell, SCell, indicated by the SPS C-RNTI or the CSI-SPS C-RNTI by a blind decoding of the first DCI format; transmitting periodic CSI to a base station periodically through a physical uplink shared channel, PUSCH, based on the UL SPS session allocated to the SCell; receiving a second DCI format, which is CRC-scrambled with an SPS C-RNTI or the CSI-SPS C-RNTI via a second PDCCH; and releasing the UL SPS session allocated to the SCell by the blind decoding of the second DCI format, wherein the SPS C-RNTI or the CSI-SPS C-RNTI is an identifier for activating or releasing of the UL SPS session for transmitting the periodic CSI, wherein the SPS C-RNTI or the CSI-SPS C-RNTI indicate whether the cell is the SCell or a primary cell, PCell, wherein the first DCI format is control information for activating the UL SPS session, wherein the second DCI format is control information for releasing the UL SPS session, wherein the SCell and the PCell configure a carrier aggregation, CA, system, wherein the PCell is a cell in which the UE performs a radio resource control, RRC, connection with the base station, wherein the SCell is at least one cell from among the remaining cells excluding the PCell in the CA system, and wherein the SPS C-RNTI or the CSI-SPS C-RNTI is related to the transmission of periodic CSI that identifies the UL SPS session only for the SCell. receiving a first downlink control information, DCI, format, which is cyclic redundancy check, CRC, -scrambled with a semi persistent scheduling cell-ratio network temporary identifier, SPS C-RNTI, or a channel state information-semi persistent scheduling cell-radio network temporary identifier, CSI-SPS C-RNTI, via a first physical downlink control channel, PDCCH; activating an uplink semi-persistent scheduling, UL SPS, on a secondary cell, SCell, indicated by the SPS C-RNTI or the CSI-SPS C-RNTI by a blind decoding of the first DCI format; transmitting periodic CSI to a base station periodically through a physical uplink shared channel, PUSCH, based on the UL SPS session allocated to the SCell; receiving a second DCI format, which is CRC-scrambled with an SPS C-RNTI or the CSI-SPS C-RNTI via a second PDCCH; and releasing the UL SPS session allocated to the SCell by the blind decoding of the second DCI format, wherein the SPS C-RNTI or the CSI-SPS C-RNTI is an identifier for activating or releasing of the UL SPS session for transmitting the periodic CSI, wherein the SPS C-RNTI or the CSI-SPS C-RNTI indicate whether the cell is the SCell or a primary cell, PCell, wherein the first DCI format is control information for activating the UL SPS session, wherein the second DCI format is control information for releasing the UL SPS session, wherein the SCell and the PCell configure a carrier aggregation, CA, system, wherein the PCell is a cell in which the UE performs a radio resource control, RRC, connection with the base station, wherein the SCell is at least one cell from among the remaining cells excluding the PCell in the CA system, and wherein the SPS C-RNTI or the CSI-SPS C-RNTI is related to the transmission of periodic CSI that identifies the UL SPS session only for the SCell.