Data processing method, communications apparatus, and communications device

A communication apparatus comprising:

• a transceiver configured to:
• receive a first data stream and a second data stream from a first communications device using S parallel channels, wherein the first data stream comprises a 2T-order high-order signal obtained by mapping information bits in T*M first code blocks in a first parallel channel of the S parallel channels, wherein the T*M first code blocks are obtained by performing polar code encoding on T*M first to-be-encoded blocks, wherein the second data stream comprises a 2T-order high-order signal obtained by mapping information bits in T*M second code blocks in a second parallel channel of the S parallel channels, wherein the T*M second code blocks are obtained by performing polar code encoding on T*M second to-be-encoded blocks, wherein one parallel channel comprises X information bit blocks, each information bit block comprising K information bits, wherein one information bit block is divided into Q information bit sub-blocks, each information bit sub-block being a binary sequence with a length of K/Q, wherein, in the first parallel channel, K information bits in each information bit block are arranged according to a first order, wherein, in the second parallel channel, K information bits in each information bit block are arranged according to a second order, wherein the second order is different from the first order, and wherein the second order and the first order meet a mapping relationship;
• and
• respectively occupy, in each parallel channel, by Q information bit sub-blocks of an xth information bit block, respectively in an xth timeslot to an (x+Q−1)th timeslot, an N*R(q-1),t+1th to an N*Rq,tth reliable positions of an xth to-be-encoded block to an (x+Q−1)th to-be-encoded block in T equivalent binary subgroups, wherein q meets 1≤q≤Q and R1,t, R2,t, . . . , RQ,t is a code rate of the first Q to-be-encoded blocks in a tth equivalent binary subgroup, N is a code length, x meets 1≤x≤X, and t meets 1≤t≤T, wherein a sum of bit sizes of T equivalent binary subgroups in an sth parallel channel occupied by a qth information bit sub-block of the xth information bit block is K/Q and s meets 1≤s≤S;
• and
• a processor configured to perform hierarchical decoding according to a hierarchical decoding level of an equivalent binary subgroup, to obtain decoded data.

A method comprising:

• obtaining, by a first communication device, a plurality of binary sequences, wherein the plurality of binary sequences are obtained by using S parallel channels, wherein each parallel channel comprises T equivalent binary subgroups, wherein one equivalent binary subgroup carries one binary sequence, wherein one parallel channel comprises X information bit blocks, wherein each information bit block comprises K information bits, wherein one information bit block is divided into Q information bit sub-blocks, wherein each information bit sub-block is a binary sequence with a length of K/Q, wherein, in a first parallel channel of the S parallel channels, K information bits in each information bit block are arranged according to a first order, wherein, in a second parallel channel of the S parallel channels, K information bits in each information bit block are arranged according to a second order, and wherein the second order is different from the first order, the second order and the first order meeting a mapping relationship;
• respectively placing, by the first communication device, in each parallel channel, Q information bit sub-blocks of an xth information bit block, respectively in an xth timeslot to an (x+Q−1)th timeslot, at an N*R(q-1),tth to an N*Rq,tth reliable positions of an xth to-be-encoded block to an (x+Q−1)th to-be-encoded block in T equivalent binary subgroups, wherein q meets 1≤q≤Q and R1,t, R2,t, . . . , RQ,t is a code rate of first Q to-be-encoded blocks in a tth equivalent binary subgroup, wherein N is a code length, wherein x meets 1≤x≤X and t meets 1≤t≤T, wherein T is greater than or equal to 2, wherein a sum of bit sizes of T equivalent binary subgroups in an sth parallel channel occupied by a qth information bit sub-block of the xth information bit block is K/Q, and wherein s meets 1≤s≤S and q meets 1≤q≤Q;
• performing, by the first communication device, polar code encoding on M first to-be-encoded blocks in each equivalent binary subgroup separately for the T equivalent binary subgroups in the first parallel channel, in order to obtain M first code blocks in each equivalent binary subgroup;
• performing, by the first communication device, polar code encoding on M second to-be-encoded blocks in each equivalent binary subgroup separately for the T equivalent binary subgroups in the second parallel channel, in order to obtain M second code blocks in each equivalent binary subgroup;
• and
• sending, by the first communication device, a first data stream and a second data stream to a second communications device, wherein the first data stream comprises a 2T-order high-order signal obtained by mapping information bits in T*M first code blocks in the first parallel channel, and wherein the second data stream comprises a 2T-order high-order signal obtained by mapping information bits in T*M second code blocks in the second parallel channel.