A method of controlling an uplink transmission power for transmitting a plurality of codewords by a user equipment in a wireless communication system, the method comprising: receiving a first indicator regarding uplink transmission power determination for transmitting the plurality of codewords from an eNode B; receiving a second indicator indicating that a specific antenna among a plurality of antennas of the user equipment is turned off; and determining the uplink transmission power for transmitting the plurality of codewords based on an indication value of the first indicator, wherein if the first indicator indicates 0, the uplink transmission power is determined such that a same uplink transmission power is assigned to each codeword, wherein if the first indicator indicates 1.25, the uplink transmission power is determined such that an uplink transmission power of each codeword is assigned based on a size of transmission information of each codeword, and wherein the method is characterized in that: in response to the second indicator, the uplink transmission power is controlled such that a maximum transmit power of the user equipment is equivalently divided to the plurality of antennas if the user equipment is in a power saving mode, and in response to the second indicator, the uplink transmission power is controlled such that the plurality of antennas other than the specific antenna use the maximum transmit power of the user equipment if the user equipment is in a maximum power transmission mode. receiving a first indicator regarding uplink transmission power determination for transmitting the plurality of codewords from an eNode B; receiving a second indicator indicating that a specific antenna among a plurality of antennas of the user equipment is turned off; and determining the uplink transmission power for transmitting the plurality of codewords based on an indication value of the first indicator, wherein if the first indicator indicates 0, the uplink transmission power is determined such that a same uplink transmission power is assigned to each codeword, wherein if the first indicator indicates 1.25, the uplink transmission power is determined such that an uplink transmission power of each codeword is assigned based on a size of transmission information of each codeword, and wherein the method is characterized in that: in response to the second indicator, the uplink transmission power is controlled such that a maximum transmit power of the user equipment is equivalently divided to the plurality of antennas if the user equipment is in a power saving mode, and in response to the second indicator, the uplink transmission power is controlled such that the plurality of antennas other than the specific antenna use the maximum transmit power of the user equipment if the user equipment is in a maximum power transmission mode. in response to the second indicator, the uplink transmission power is controlled such that a maximum transmit power of the user equipment is equivalently divided to the plurality of antennas if the user equipment is in a power saving mode, and in response to the second indicator, the uplink transmission power is controlled such that the plurality of antennas other than the specific antenna use the maximum transmit power of the user equipment if the user equipment is in a maximum power transmission mode.