Patent ID: 8774152

Claim:
A method for transmitting a control channel message to a terminal, by a base station, in a Multiple Input Multiple Output (MIMO) mobile communication system, the method comprising the steps of: determining whether a pilot that is used for data demodulation in a Mobile Station (MS) is a common pilot or a dedicated pilot; when it is determined that the common pilot is used for the data demodulation in the MS, generating control information including at least one of information about a precoding scheme, a MIMO transmission rank being a number of transmission layers in which encoded packet streams are transmitted, and an index mapping a precoding matrix corresponding to the precoding scheme and the number of transmission layers; when it is determined that the dedicated pilot is used for the data demodulation in the MS, generating the control information including information about a pilot format of the dedicated pilot and the MIMO transmission rank; generating the control channel message including the control information; and transmitting the control channel message to the terminal.