Method and device for interleaving data

A device in a wireless communication network, comprising:

• a transmitter;
• a non-transitory memory storage comprising instructions;
• and
• one or more hardware processors in communication with the non-transitory memory storage, wherein the one or more hardware processors execute the instructions to:
• obtain a Polar encoded bit sequence, wherein the Polar encoded bit sequence has a code length of N, and N is an integer power of 2, and N is greater than or equal to 32;
• divide the Polar encoded bit sequence into g groups, a length of each group is N/g, wherein g is 32;
• block interleave the g groups to obtain an interleaved bit sequence, wherein the interleaved bit sequence comprises g groups of bits, the g groups are ordered according to a sequence S after the block interleaving, each element in the sequence S indicates a group number after the block interleaving;
• shorten (N-M) bits from end of the interleaved bit sequence to obtain a rate matched bit sequence when a transmission code rate R is greater than a code rate threshold R0;
• or puncturing (N-M) bits from beginning of the interleaved bit sequence to obtain the rate matched bit sequence when a transmission code rate R is less than or equal to the code rate threshold R0;
• wherein R=K/M and M is a positive integer smaller than N, K is positive integer, and wherein a value of the R0 is a greater than 1/2 and not greater than 2/5;
• transmit, by using the transmitter and over a wireless network, a signal that comprises the rate matched bit sequence.

A device in a wireless communication network, comprising:

• a processor and a memory storing program instructions for execution;
• wherein, the processor is configured to execute the program instructions to perform operations comprising:
• obtaining a Polar encoded bit sequence, wherein the Polar encoded bit sequence has a code length of N, and N is an integer power of 2, and N is greater than or equal to 32;
• dividing the Polar encoded bit sequence into g groups, a length of each group is N/g, wherein g is 32;
• block interleaving the g groups to obtain an interleaved bit sequence, wherein the interleaved bit sequence comprises g groups of bits, the g groups are ordered according to a sequence S after the block interleaving, each element in the sequence S indicates a group number after the block interleaving;
• rate matching the interleaved bit sequence to obtain a rate matched bit sequence;
• and
• transmitting the rate matched bit sequence;
• wherein when a transmission code rate R is greater than a code rate threshold R0, the rate matching the interleaved bit sequence to obtain the rate matched bit sequence comprises:
• shortening (N-M) bits from end of the interleaved bit sequence to obtain the rate matched bit sequence;
• wherein when a transmission code rate R is less than or equal to a code rate threshold R0, the rate matching the interleaved bit sequence to obtain the rate matched bit sequence comprises:
• puncturing (N-M) bits from beginning of the interleaved bit sequence obtain the rate matched bit sequence;
• wherein R=K/M and M is a positive integer smaller than N, K is positive integer, and wherein a value of the R0 is a less than 1/2 and not less than 2/5.

A non-transitory computer readable medium storing program codes thereon for execution by one or more processors in a communication device, wherein the program codes, when executed by the one or more processors, cause the communication device to perform operations comprising obtaining a Polar encoded bit sequence, wherein the Polar encoded bit sequence has a code length of N, and N is an integer power of 2, and N is greater than or equal to 32;

• dividing the Polar encoded bit sequence into g groups, a length of each group is N/g, wherein g is 32;
• block interleaving the g groups to obtain an interleaved bit sequence, wherein the interleaved bit sequence comprises g groups of bits, the g groups are ordered according to a sequence S after the block interleaving, each element in the sequence S indicates a group number after the block interleaving;
• rate matching the interleaved bit sequence to obtain a rate matched bit sequence;
• and
• transmitting the rate matched bit sequence;
• wherein when a transmission code rate R is greater than a code rate threshold R0, the rate matching the interleaved bit sequence to obtain the rate matched bit sequence comprises:
• shortening (N-M) bits from end of the interleaved bit sequence to obtain the rate matched bit sequence;
• wherein when a transmission code rate R is less than or equal to a code rate threshold R0, the rate matching the interleaved bit sequence to obtain the rate matched bit sequence comprises:
• puncturing (N-M) bits from beginning of the interleaved bit sequence obtain the rate matched bit sequence;
• wherein R=K/M and M is a positive integer smaller than N, K is positive integer, and wherein a value of the R0 is a less than 1/2 and not less than 2/5.