| CPC H04L 1/0071 (2013.01) [H04L 1/1812 (2013.01); H04L 1/1822 (2013.01)] | 20 Claims |
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1. A hybrid automatic repeat request (HARQ)-based communication method, comprising:
obtaining a plurality of information bits in first transmission;
grouping the plurality of information bits into m groups of first information bit sequences K1, . . . , Km, wherein m is a positive integer;
performing first encoding on the m groups of first information bit sequences to obtain m groups of first encoded codewords;
performing second encoding on the m groups of first encoded codewords to obtain a first target encoded codeword;
sending the first target encoded codeword to a receive end;
performing interleaving processing on n groups of first information bit sequences in the m groups of first information bit sequences in tth retransmission if the first transmission fails, to obtain m groups of first bit sequences X1, . . . , Xm, wherein n is less than m; t is greater than or equal to 1; and the m groups of first bit sequences comprise n groups of interleaved bit sequences, wherein the interleaving processing is performed in a retransmission process, and subsequent encoding and decoding operations are performed on interleaved sequences, wherein the decoding operations include a cancellation operation and an AND operation based on an interleaving pattern, a same interleaving pattern is implemented by using a same interleaver, different interleaving patterns are implemented by using different interleavers, wherein the interleaving processing improves code weight distribution in transmission;
performing the first encoding on the m groups of first bit sequences to obtain m groups of second encoded codewords;
performing the second encoding on the m groups of second encoded codewords to obtain a second target encoded codeword; and
sending the second target encoded codeword to the receive end.
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