Method and apparatus for transmitting channel quality control information in wireless access system

A user equipment (UE) for transmitting channel quality control information through a physical uplink shared channel (PUSCH) in a wireless access system that supports hybrid automatic retransmit request (HARQ), the UE comprising:

• a receiver;
• a transmitter;
• and
• a processor configured to:
• control the transmitter to transmit the channel quality control information;
• control the receiver to receive a physical downlink control channel (PDCCH) including an initial uplink grant;
• control the transmitter to transmit first uplink data using two transport blocks based on the initial uplink grant through the PUSCH;
• control the receiver to receive a negative acknowledgement (NACK) information for one of the two transport blocks;
• and
• control the transmitter to transmit a second uplink data which is to be retransmitted in response to the NACK information and channel quality control information, by using two transport blocks through the PUSCH,
• wherein a number of coded symbols, Q′, required to transmit the channel quality control information is calculated based on the initial uplink grant,
• wherein the initial uplink grant includes information MscPUSCH-initial(x) on the number of subcarriers for a transport block for transmitting the channel quality control information, information C(x) on a number of code blocks related to the transport block for transmitting the channel quality control information, and information Kr(x) on the size of the code blocks, and
• wherein ‘x’ denotes an index of the transport block for transmitting the channel quality control information.

A method for receiving channel quality control information through a physical uplink shared channel (PUSCH) in a wireless access system that supports hybrid automatic retransmit request (HARQ), the method performed by a base station and comprising:

• transmitting a physical downlink control channel (PDCCH) including an initial uplink grant;
• receiving first uplink data using two transport blocks based on the initial uplink grant;
• transmitting a negative acknowledgement (NACK) information for one of the two transport blocks;
• and
• receiving second uplink data which is to be retransmitted in response to the NACK information and channel quality control information, by using two transport blocks through the PUSCH,
• wherein a number of coded symbols, Q′, required to transmit the channel quality control information is calculated based on the initial uplink grant,
• wherein the initial uplink grant includes information MscPUSCH-initial(x) on the number of subcarriers for a transport block for transmitting the channel quality control information, information C(x) on a number of code blocks related to the transport block for transmitting the channel quality control information, and information Kr(x) on the size of the code blocks, and
• wherein ‘x’ denotes an index of the transport block for transmitting the channel quality control information.

A base station for receiving channel quality control information through a physical uplink shared channel (PUSCH) in a wireless access system that supports hybrid automatic retransmit request (HARQ), the base station comprising:

• a receiver;
• a transmitter;
• and
• a processor configured to:
• control the receiver to receive the channel quality control information,
• control the transmitter to transmit a physical downlink control channel (PDCCH) including an initial uplink grant;
• control the receiver to receive uplink data using two transport blocks based on the initial uplink grant;
• control the transmitter to transmit a negative acknowledgement (NACK) information for one of the two transport blocks;
• and
• control the receiver to receive second uplink data which is to be retransmitted in response to the NACK information and channel quality control information, by using two transport blocks through the PUSCH,
• wherein a number of coded symbols, Q′, required to transmit the channel quality control information is calculated based on the initial uplink grant,
• wherein the initial uplink grant includes information MscPUSCH-initial(x) on the number of subcarriers for a transport block for transmitting the channel quality control information, information C(x) on a number of code blocks related to the transport block for transmitting the channel quality control information, and information Kr(x) on the size of the code blocks, and
• wherein ‘x’ denotes an index of the transport block for transmitting the channel quality control information.