Patent ID: 8488537

Claim:
A method of transmitting channel information in a multiple antenna system, the method comprising: transmitting a higher layer signal indicating whether a scheme in use is an open loop scheme or a closed loop scheme; receiving channel information comprising rank information; and transmitting a confirm message through a physical downlink control channel (PDCCH) as a response for the channel information, wherein the confirm message has a fixed bit size irrespective of which scheme is used and a value of the confirm message indicates different information according to the higher layer signal, wherein when the higher layer signal indicates an open loop scheme, the value of the confirm message indicates overriding rank information which overrides the received rank information, and when the higher layer signal indicates a closed loop scheme, the value of the confirm message indicates information informing whether the received channel information is used without alteration or information informing assignment of a dedicated control channel comprised in a physical downlink shared channel (PDSCH), wherein the dedicated control channel is used for transmitting of an override message to specify a rank information.