Patent ID: 8811355

Claim:
A method for receiving MIMO feedback information from a mobile station at a base station supporting a single-user MIMO (SU-MIMO) mode and a multi-user MIMO (MU-MIMO) mode, the method comprising: receiving information indicating a preferred MIMO mode of the mobile station from the mobile station; transmitting feedback mode information including information indicating a MIMO mode determined based on the preferred MIMO mode to the mobile station; and receiving feedback information of the MIMO mode, which is based on the feedback mode information, from the mobile station, wherein the feedback mode information includes information indicating a number of mobile stations to be allocated to a same time and frequency resource as the mobile station, wherein: the information indicating the MIMO mode indicates the SU-MIMO mode or the MU-MIMO mode, and the feedback information of the MIMO mode includes a precoding matrix index selected from a SU-MIMO codebook when the feedback mode information indicates the SU-MIMO mode or a precoding matrix index selected from a MU-MIMO codebook when the feedback mode information indicates the MU-MIMO mode.