Method and apparatus for encoding and decoding using CRC bit in wireless communication system

A transmitting node comprising:

• at least one transceiver;
• at least one processor communicatively coupled to the at least one transceiver;
• and
• at least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor individually or in any combination to cause the transmitting node to:
• encode information bits by concatenating cyclic redundancy check (CRC) bits to a last information bit of the information bits,
• identify a matrix mapped with a size of the information bits and a size of the CRC bits, wherein the matrix includes a first sub matrix corresponding to an identity matrix and a second sub matrix,
• identify, for each column of the second sub matrix, first row indices in which 1 is located,
• generate an interleaving pattern by sequentially adding, for each column of the second sub matrix, second row indices that are not previously added among the first row indices,
• interleave, based on the interleaving pattern, the information bits and the CRC bits,
• generate a codeword by performing a convolution-encoding and a polar-encoding on the interleaved information bits and the interleaved CRC bits, and
• transmit the codeword to a receiving node.