Channel coding method and apparatus in communication system

An apparatus, comprising a processor and a memory;

• wherein the memory is configured to store computer-executable instructions, and the processor is configured to execute the instructions to perform the tasks of:
• obtaining K bits of information, wherein K≥1, and wherein the K bits of information are a part of an N-bit sequence u1N, N is an integer power of 2;
• determining N−M subchannels corresponding to N−M to-be-removed bits;
• determining K′ subchannels corresponding to the K information bits, a quantity J of first-type auxiliary bits, and a quantity J′ of second-type auxiliary bits according to reliabilities of the subchannels, wherein N≥K′, and K′=K+J+J′;
• generating the sequence u1N, wherein the sequence u1N comprises N bits, each bit of the sequence u1N corresponds to a subchannel, the K information bits, the J first-type auxiliary bits, and the J′ second-type auxiliary bits are placed in K′ positions of the sequence u1N according to the determined K′ subchannels;
• encoding the sequence u1N in an encoding process, to obtain an N-bit encoded sequence;
• removing N−M bits from the encoded sequence according to the determined N−M subchannels, to obtain an M-bit output sequence;
• and
• outputting the output sequence.

A non-transitory storage medium storing computer-executable instructions which, when executed by a processor of a communication device, cause the communication device to:

• obtain K bits of information, wherein K≥1, and wherein the K bits of information are a part of an N-bit sequence u1N, N is an integer power of 2;
• determine N−M subchannels corresponding to N−M to-be-removed bits;
• determine K′ subchannels corresponding to the K information bits, a quantity J of first-type auxiliary bits, and a quantity J′ of second-type auxiliary bits according to reliabilities of the subchannels, wherein N≥K′, and K′=K+J+J′;
• generate the sequence u1N, wherein the sequence u1N comprises N bits, each bit of the sequence u1N corresponds to a subchannel, the K information bits, the J first-type auxiliary bits, and the J′ second-type auxiliary bits are placed in K′ positions of the sequence u1N according to the determined K′ subchannels;
• encode the sequence u1N in an encoding process to obtain an N-bit encoded sequence;
• remove N−M bits from the encoded sequence according to the determined N−M subchannels, to obtain an M-bit output sequence;
• and
• output the output sequence.