Method, communication device, processing device, and storage medium for transmitting information block, and method, communication device, processing device, and storage medium for receiving information block

A communication device comprising:

• at least one transceiver;
• at least one processor;
• and
• at least one computer memory operably connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations including:
• determining a first bit sequence v2N={v0, . . . , v2N-1}, which is an input to convolution precoding, based on an information block of a length K and a polar sequence Q2N-10={Q0, Q1, . . . , Q2N-1} of length 2N;
• determining a second bit sequence u2N={u0, . . . , u2N-1} based on performing the convolution precoding on the first bit sequence;
• determining a third bit sequence including bits coded based on polar encoding for the second bit sequence;
• and
• transmitting the third bit sequence to another communication device,
• wherein the polar sequence Q2N-10={Q0, Q1, . . . , Q2N-1} of length 2N is defined in ascending order of reliability W(Q2N0)<W(Q2N1)< . . . <W(Q2N2N-1), where 0<=Q2Ni<=2N−1 is a bit index for i=0, 1, . . . , 2N−1, and W(Q2Ni) is reliability of bit index Q2Ni, and
• wherein determining the first bit sequence v2N includes mapping predetermined bit values to last m bit indices from among first N bit indices in the first bit sequence v2N and mapping K bit values of the information block to K bit indices from among remaining (2N-m) bit indices, where m is a number of shift registers for the convolution precoding.

A method performed by a communication device, the method comprising:

• receiving a third bit sequence including coded bits;
• and
• obtaining an information block of length K based on the third bit sequence,
• wherein the third bit sequence is provided based on polar encoding for a second bit sequence u2N={u0, . . . , u2N-1},
• wherein the second bit sequence is provided via convolution precoding for a first bit sequence v2N={v0, . . . , v2N-1},
• wherein the first bit sequence v2N is provided based on the information block of length K and a polar sequence Q2N-10={Q0, Q1, . . . , Q2N-1} of length 2N,
• wherein the polar sequence Q2N-10={Q0, Q1, . . . , Q2N-1} of length 2N is defined in ascending order of reliability W(Q2N0)<W(Q2N1)< . . . <W(Q2N2N-1), where 0<=Q2Ni<=2N−1 is a bit index for i=0, 1, . . . , 2N−1, and W(Q2Ni) is reliability of bit index Q2Ni, and
• wherein, from among first N bit indices in the first bit sequence v2N, last m bit indices include predetermined bit values, and from among remaining (2N-m) bit indices, K bit indices include K bit values of the information block, where m is a number of shift registers for the convolution precoding.