Channel Encoding Method and Apparatus in Wireless Communications

A data transmission apparatus, comprising:

• a non-transitory memory configured to store a program instruction;
• and
• at least one processor configured to access the program instruction, wherein the at least one processor executes the program instruction to:
• obtain A information bits;
• perform cyclic redundancy check (CRC) encoding on the A information bits to generate a bit sequence of A+L bits that comprises L CRC bits and the A information bits;
• interleave the bit sequence based on a interleaving sequence to obtain an interleaved bit sequence, wherein the interleaving sequence comprises A+L indexes corresponding to the A+L bits, ad the A+L indexes are obtained by subtracting Kmax−A from A+L indexes of a maximum-length interleaving sequence that comprises Kmax+L indexes, and wherein each of the A+L indexes of the maximum-length interleaving sequence is greater than or equal to Kmax−A, and Kmax is a maximum quantity of information bits corresponding to the maximum-length interleaving sequence:
• perform polar encoding on the second bit sequence obtain encoded information;
• perform rate matching on the encoded information to obtain rate matched information;
• and.
• output the rate matched information.

A non-transitory computer-readable storage medium coupled to one or more processors and having instructions stored thereon which, when executed by the one or more processors, cause the one or more processors to:

• obtain A information bits;
• perform cyclic redundancy check (CRC) encoding on the A information bits to generate a bit sequence of A+L bits that comprises L CRC bits and the A information bits;
• interleave the bit sequence based on an interleaving sequence to obtain an interleaved bit sequence, wherein the interleaving sequence comprises A+L indexes corresponding to the A+L bits, and the A+L indexes are obtained by subtracting Kmax−A from A+L indexes of a maximum-length interleaving sequence that comprises Kmax+L indexes, and wherein each of the A+L indexes of the maximum-length interleaving sequence is greater than or equal to Kmax−A, and Kmax is a maximum quantity of information bits corresponding to the maximum-length interleaving sequence;
• perform polar encoding on the second bit sequence to obtain encoded information,
• perform rate matching on the encoded information to obtain rate matched information;
• and.
• outputting the rate matched information.