Method for transmitting data by using polar coding in wireless access system

A device for a wireless communication system, the device comprising:

• at least one processor;
• and
• at least one computer memory storing at least one program which causes the at least one processor to perform operations comprising:
• allocating a payload of K bits to K predetermined input bits among N input bits for a polar code of size N, where K is a positive integer not greater than N;
• generating encoded bits based on the N input bits and the polar code;
• and
• transmitting the encoded bits to a receiving device,
• wherein the payload includes L data bits and M cyclic redundancy check (CRC) bits, where L+M=K, and L and M are positive integers, and
• wherein the M CRC bits are allocated to M most reliable input bits among the K predetermined input bits.

A non-transitory computer readable storage medium storing at least one program that cause at least one processor to perform operations comprising:

• allocating a payload of K bits to K predetermined input bits among N input bits for a polar code of size N, where K is a positive integer not greater than N;
• generating encoded bits based on the N input bits and the polar code;
• and
• transmitting the encoded bits to a receiving device,
• wherein the payload includes L data bits and M cyclic redundancy check (CRC) bits, where L+M=K, and L and M are positive integers, and
• wherein the M CRC bits are allocated to M most reliable input bits among the K predetermined input bits.

A method for receiving data by using polar coding in a wireless communication system, the method comprising:

• receiving encoded bits from a transmitting device;
• and
• decoding the encoded bits to obtain a payload of K bits based on a polar code of size N,
• wherein the encoded bits are decoded based on a mapping relationship between the payload of K bits and K predetermined input bits among N input bits for the polar code, where K is a positive integer not greater than N,
• wherein the payload includes L data bits and M cyclic redundancy check (CRC) bits, where L+M=K, and L and M are positive integers, and
• wherein the mapping relationship comprises:
• mapping the M CRC bits to M most reliable input bits among the K predetermined input bits.