Rate matching method and device

摘要

The present invention discloses a rate matching method and device. The method includes that: an information bit sequence is coded and interleaved to obtain a mother code codeword with a length NFB—Buffer; and bits are selected from the mother code codeword to generate a hybrid automatic repeat request (HARQ) subpacket for current transmission. By means of the present invention, the effect of covering the whole mother code area can be achieved as much as possible, and the performance of the HARQ multiple retransmission link can be enhanced.

主权项

1. A rate matching method executed by a mobile terminal, the method comprising:
coding and interleaving an information bit sequence to obtain a mother code codeword with a length NFB—Buffer; and selecting bits from the mother code codeword to generate a hybrid automatic repeat request (HARQ) subpacket for current transmission, wherein in the case that a value range of a HARQ subpacket identifier (SPID) of the HARQ subpacket retransmission is 0, 1, 2 or 3, an approach for determining a start position of the HARQ subpacket when generating the HARQ subpacket comprises one or more of the following:
a first approach of selecting the first L bits from the start position in the mother code codeword to compose the HARQ subpacket, wherein the L is a predetermined length of the HARQ subpacket;a second approach of selecting the last L bits from the mother code codeword to compose the HARQ subpacket, wherein the L is a predetermined length of the HARQ subpacket;a third approach of selecting L bits by taking the middle position of the mother code codeword as the center position to compose the HARQ subpacket, wherein it is selected that both sides of the center position have approximately equal bit numbers, and the L is a predetermined length of the HARQ subpacket;a fourth approach of selecting L bits by taking the last bit position of the mother code codeword as the center position to compose the HARQ subpacket, wherein it is selected that both sides of the center position have approximately equal bit numbers, and the L is a predetermined length of the HARQ subpacket;a fifth approach of selecting the first L bits from the mother code codeword by taking the position of the first bit of a first check bit stream as the start position to compose the HARQ subpacket, wherein the L is a predetermined length of the HARQ subpacket;a sixth approach of selecting the first L bits from the mother code codeword by taking the position obtained by adding the position of the first bit position of a first check bit stream and L/2 bit as the start position to compose the HARQ subpacket, wherein the L is a predetermined length of the HARQ subpacket;a seventh approach of selecting the first L bits by taking the middle position of the mother code codeword as the start position to compose the HARQ subpacket, wherein the L is a predetermined length of the HARQ subpacket;an eighth approach of selecting L bits by taking the middle position of the mother code codeword as the end position to compose the HARQ subpacket, wherein the L is a predetermined length of the HARQ subpacket;a ninth approach of selecting L bits by taking the middle position between the last bit of the mother code codeword and the first bit of a first check bit stream as the end position to compose the HARQ subpacket, wherein the L is a predetermined length of the HARQ subpacket; anda tenth approach of selecting L bits by taking the position of the last bit of an information bit stream of the mother code codeword as the end position to compose the HARQ subpacket, wherein the L is a predetermined length of the HARQ subpacket.