Method and apparatus for rate matching interleaving for polar codes

A base station comprising:

• a processor configured to perform rate matching for polar codes on a coded bit sequence, wherein the processor is configured to divide the coded bit sequence to obtain a plurality of segments and the number of bits included in each segment is an integral power of 2, and to perform intra-segment interleaving on the plurality of segments, wherein an interleaving order for at least one of the plurality of segments is different from interleaving orders for other segments of the plurality of segments;
• and
• a transmitter configured to transmit the rate matched coded bit sequence,
• wherein the number of bits included in at least one of the plurality of segments is different from the number of bits included in other segments of the plurality of segments.

A method performed by a terminal, the method comprising:

• performing rate matching for polar codes on a coded bit sequence, wherein the performing rate matching for polar codes on a coded bit sequence comprises:
• dividing the coded bit sequence to obtain a plurality of segments and the number of bits included in each segment is an integral power of 2, and performing intra-segment interleaving on the plurality of segments, wherein an interleaving order for at least one of the plurality of segments is different from interleaving orders for other segments of the plurality of segments;
• and
• transmitting the rate matched coded bit sequence,
• wherein the number of bits included in at least one of the plurality of segments is different from the number of bits included in other segments of the plurality of segments.

A system comprising a terminal and a base station, wherein:

• the terminal comprises:
• a first processor configured to perform rate matching for polar codes on a first coded bit sequence, wherein the first processor is configured to divide the first coded bit sequence to obtain a plurality of segments and the number of bits included in each segment is an integral power of 2, and to perform intra-segment interleaving on the plurality of segments, wherein an interleaving order for at least one of the plurality of segments is different from interleaving orders for other segments of the plurality of segments;
• and
• a first transmitter configured to transmit the rate matched first coded bit sequence,
• wherein the number of bits included in at least one of the plurality of segments divided by the first processor is different from the number of bits included in other segments of the plurality of segments divided by the first processor;
• and
• the base station comprises:
• a second processor configured to perform rate matching for polar codes on a second coded bit sequence, wherein the second processor is configured to divide the second coded bit sequence to obtain a plurality of segments and the number of bits included in each segment is an integral power of 2, and to perform intra-segment interleaving on the plurality of segments, wherein an interleaving order for at least one of the plurality of segments is different from interleaving orders for other segments of the plurality of segments;
• and
• a second transmitter configured to transmit the rate matched second coded bit sequence,
• wherein the number of bits included in at least one of the plurality of segments divided by the second processor is different from the number of bits included in other segments of the plurality of segments divided by the second processor.