Polar code retransmission method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsHui SHEN, Bin Li
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Abstract
The present invention relates to the field of communications network technologies, and discloses a polar code retransmission method and apparatus, which can improve HARQ performance. In embodiments of the present invention, some information bits of a first polar code are encoded to obtain a second polar code, where the first polar code is a code word that is transmitted for the first time; modulo-2 addition is performed on the first polar code and the second polar code to obtain a third polar code; and the third polar code is sent as a to-be-retransmitted code word. The solutions provided in the embodiments of the present invention are applicable when a polar code is retransmitted.
Claims18
A polar code retransmission method, comprising:
- encoding some information bits of a first polar code to obtain a second polar code, wherein the first polar code is a code word that is transmitted for the first time;
- performing modulo-2 addition on the first polar code and the second polar code to obtain a third polar code;
- and
- sending the third polar code as a to-be-retransmitted code word.
A polar code retransmission apparatus, comprising:
- an encoding module, configured to encode some information bits of a first polar code to obtain a second polar code, and provide the second polar code for a modulo-2 addition module, wherein the first polar code is a code word that is transmitted for the first time;
- the modulo-2 addition module, configured to perform modulo-2 addition on the first polar code and the second polar code to obtain a third polar code, and provide the third polar code for a sending module;
- and
- the sending module, configured to send the third polar code as a to-be-retransmitted code word.
A wireless communications apparatus, comprising:
- a memory, configured to store an instruction for performing the following operations:
- encoding some information bits of a first polar code to obtain a second polar code, wherein the first polar code is a code word that is transmitted for the first time;
- and performing modulo-2 addition on the first polar code and the second polar code to obtain a third polar code;
- a processor, coupled with the memory and a transmitter, and configured to execute the instruction stored in the memory;
- and
- the transmitter, configured to send the third polar code as a to-be-retransmitted code word, wherein the third polar code is provided by the processor.
Dependencies are inferred from the claim text.