Polar coding method, apparatus, and device

A communications apparatus, comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor and stores instructions for execution by the at least one processor to perform operations comprising:
• obtaining a plurality of bits to be coded;
• determining a second mother code sequence for coding the plurality of bits into a target polar code, the second mother code sequence is one of first mother code sequences, wherein each of the first mother code sequences comprises at least a sub-sequence of a maximum mother code sequence, wherein the maximum mother code sequence comprises N sequence numbers corresponding to N polarized channels and the N sequence numbers are sorted according to arranging reliabilities of the N polarized channels in an ascending order, each of the first mother code sequences comprises Z sequence numbers corresponding to Z polarized channels and the Z sequence numbers are sorted according to arranging reliabilities of the Z polarized channels in an ascending order same as they are in the maximum mother code sequence, wherein a value in each of the first mother code sequences is less than Z, Z is less than or equal to N, and Z and N are an integer powers of 2;
• determining an information bit index set based on the second mother code sequence;
• performing polar coding on the plurality of bits based on the information bit index set to obtain the target polar code;
• and
• outputting the target polar code.

A non-transitory, computer-readable medium storing one or more instructions executable by at least one processor to perform operations comprising:

• obtaining a plurality of bits to be coded;
• determining a second mother code sequence for coding the plurality of bits into a target polar code, the second mother code sequence is one of first mother code sequences, wherein each of the first mother code sequences comprises at least a sub-sequence of a maximum mother code sequence, wherein the maximum mother code sequence comprises N sequence numbers corresponding to N polarized channels and the N sequence numbers are sorted according to arranging reliabilities of the N polarized channels in an ascending order, each of the first mother code sequences comprises Z sequence numbers corresponding to Z polarized channels and the Z sequence numbers are sorted according to arranging reliabilities of the Z polarized channels in an ascending order same as they are in the maximum mother code sequence, wherein a value in each of the first mother code sequences is less than Z, Z is less than or equal to N, and Z and N are an integer powers of 2;
• determining an information bit index set based on the second mother code sequence;
• performing polar coding on the plurality of bits based on the information bit index set to obtain the target polar code;
• and
• output the target polar code.