A method of transmitting downlink control information for scheduling transmission of uplink multiple codewords in a wireless communication system supporting uplink multiple-input multiple-output, UL MIMO, the method comprising: generating downlink control information including modulation and coding scheme, MCS, information and new data indicator, NDI, information for each of the uplink multiple codewords as uplink scheduling information; transmitting, to a user equipment, a physical downlink control channel, PDCCH, including the downlink control information, characterised in that: the downlink control information further includes physical uplink shared channel, PUSCH, resource block allocation information, a transmit power control, TPC, command for a scheduled PUSCH, cyclic shift information for a demodulation reference signal, DMRS, an uplink index in case of time division duplexing, TDD, a downlink allocation index in case of TDD, and channel quality information, CQI, request and precoding information, and wherein an uplink retransmission of each of the uplink multiple codewords is determined based on whether the NDI information for each of the uplink multiple codewords is toggled or not, wherein when a number of transmission antennas for UL MIMO is 2, the precoding information is configured to 3 bits indicating a codebook index of one of a rank 1-codebook or a rank 2-codebook, and wherein when the number of transmission antennas for UL MIMO is 4, the precoding information is configured to 6 bits indicating a codebook index of one of the rank 1-codebook, the rank 2-codebook, a rank 3-codebook or a rank 4-codebook. generating downlink control information including modulation and coding scheme, MCS, information and new data indicator, NDI, information for each of the uplink multiple codewords as uplink scheduling information; transmitting, to a user equipment, a physical downlink control channel, PDCCH, including the downlink control information, characterised in that: the downlink control information further includes physical uplink shared channel, PUSCH, resource block allocation information, a transmit power control, TPC, command for a scheduled PUSCH, cyclic shift information for a demodulation reference signal, DMRS, an uplink index in case of time division duplexing, TDD, a downlink allocation index in case of TDD, and channel quality information, CQI, request and precoding information, and wherein an uplink retransmission of each of the uplink multiple codewords is determined based on whether the NDI information for each of the uplink multiple codewords is toggled or not, wherein when a number of transmission antennas for UL MIMO is 2, the precoding information is configured to 3 bits indicating a codebook index of one of a rank 1-codebook or a rank 2-codebook, and wherein when the number of transmission antennas for UL MIMO is 4, the precoding information is configured to 6 bits indicating a codebook index of one of the rank 1-codebook, the rank 2-codebook, a rank 3-codebook or a rank 4-codebook. the downlink control information further includes physical uplink shared channel, PUSCH, resource block allocation information, a transmit power control, TPC, command for a scheduled PUSCH, cyclic shift information for a demodulation reference signal, DMRS, an uplink index in case of time division duplexing, TDD, a downlink allocation index in case of TDD, and channel quality information, CQI, request and precoding information, and wherein an uplink retransmission of each of the uplink multiple codewords is determined based on whether the NDI information for each of the uplink multiple codewords is toggled or not, wherein when a number of transmission antennas for UL MIMO is 2, the precoding information is configured to 3 bits indicating a codebook index of one of a rank 1-codebook or a rank 2-codebook, and wherein when the number of transmission antennas for UL MIMO is 4, the precoding information is configured to 6 bits indicating a codebook index of one of the rank 1-codebook, the rank 2-codebook, a rank 3-codebook or a rank 4-codebook.