Method for performing channel-coding of information on basis of polar code

A transmission device for performing channel coding on information based on a polar code, the transmission device comprising:

• a transceiver configured to:
• transmit, to a first terminal and a second terminal, first output information generated as a result of the channel coding, through a first physical downlink control channel (PDCCH) related to a first transmission block (TB);
• transmit, to the first terminal, second output information generated as a result of the channel coding, through a second PDCCH related to a second TB;
• and
• transmit, to the second terminal, third output information generated as a result of the channel coding, through a third PDCCH related to a third TB;
• and
• a processor configured to:
• control the transceiver;
• and
• perform the channel coding on first input information, second input information and third input information based on a generator matrix for the polar code,
• wherein the first output information is generated based on the first input information,
• wherein the second output information is generated based on both the first output information and the second input information,
• wherein the third output information is generated based on both the first output information and the third input information, and
• wherein an aggregation level related to the first TB is determined based on a channel condition of a terminal having a poor channel condition among the first terminal and the second terminal.