Patent ID: 7835337

Claim:
A method for transmitting downlink control information in a multiple antenna system which can simultaneously transmit a maximum of two codewords, the method comprising: transmitting the downlink control information including first modulation and coding scheme (MCS) information, a first new data indicator (NDI) and a first redundancy version (RV) for a first information block, and second MCS information, a second NDI and a second RV for a second information block, wherein the first and second information blocks are transmitted through the two codewords; and transmitting additional downlink control information including at least a swapping indicator or enable/disable information, the swapping indicator indicating whether or not swapping occurs between the first and second information blocks transmitted through the two codewords, and the enable/disable information indicating whether or not any one of transmissions through the two codewords is disabled, wherein the swapping indicator is reserved when any one of the transmissions through the two codewords is disabled.