| abstract |
The present invention relates to a wireless communication system, and more particularly, to provide an efficient feedback method and apparatus in a multi-antenna support wireless communication system. According to an embodiment of the present invention, a method of transmitting CSI for downlink multicarrier transmission may include: RI, a first PMI, a second PMI, and a combination of first and second PMIs for at least one downlink carrier; Generating a CSI including at least one of the CQIs calculated based on the determined precoding information; If two or more CSIs collide in one uplink subframe on one uplink carrier, determining the CSI to be transmitted based on the priority; And transmitting the determined CSI through an uplink channel, wherein the CSI includes a first group including an RI, a second group including a wideband first PMI, a third group including a wideband CQI, and a subband CQI The CSI belonging to the first group, and the CSI belonging to the first group or the CSI belonging to the second group collide with the CSI belonging to the third group or the CSI belonging to the fourth group, The belonging CSI may be missing with a lower priority. |