Polar code encoding method and encoding apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsHui Shen, Bin Li
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Abstract
The present invention discloses a polar code encoding method and encoding apparatus. The method includes: mapping M reserved bits of a broadcast signaling respectively to M low-reliability information bits in K information bits of a polar code, and mapping remaining bits of the broadcast signaling to remaining information bits of the K information bits, to obtain bits after mapping, where M<K, and both M and K are positive integers; and performing polar code encoding on the bits after mapping, to obtain coded bits after encoding. Embodiments of the present invention can improve broadcast signaling transmission reliability.
Claims24
A polar code encoding method, comprising:
- mapping, by a polar code encoding apparatus, M bits of a broadcast signaling to M low-reliability information bits in K information bits of a polar code respectively, and mapping remaining bits of the broadcast signaling to remaining information bits of the K information bits, to obtain K bits after mapping, wherein M<K, and both M and K are positive integers;
- and
- performing, by the polar code encoding apparatus, polar code encoding on the K bits after mapping, to obtain coded bits after encoding.
A polar code rate matching method, comprising:
- obtaining, by a polar code rate matching apparatus, a congruential sequence according to a length of coded bits of a polar code of a control signaling;
- performing, by the polar code rate matching apparatus, sorting processing on the congruential sequence to obtain a reference sequence;
- determining, by the polar code rate matching apparatus, a mapping function according to the congruential sequence and the reference sequence;
- and
- interleaving, by the polar code rate matching apparatus, the coded bits of the polar code of the control signaling according to the mapping function to generate coded bits after interleaving.
A polar code encoding apparatus, comprising:
- a memory comprising processor-executable instructions stored thereon;
- and
- a processor coupled to the memory, wherein the processor is configured to execute the processor-executable instructions to facilitate:
- mapping M bits of a broadcast signaling to M low-reliability information bits in K information bits of a polar code respectively, and mapping remaining bits of the broadcast signaling to remaining information bits of the K information bits, to obtain K bits after mapping, wherein M<K, and both M and K are positive integers;
- and
- performing a polar code encoding on the K bits after mapping, to obtain coded bits after encoding.
A polar code rate matching apparatus, comprising:
- a memory comprising processor-executable instructions stored thereon;
- and
- a processor coupled to the memory, wherein the processor is configured to execute the processor-executable instructions to facilitate:
- obtaining a congruential sequence according to a length of coded bits of a polar code of a control signaling;
- performing a sorting processing on the congruential sequence according to a rule, to obtain a reference sequence;
- determining a mapping function according to the congruential sequence and the reference sequence;
- and
- interleaving the coded bits of the polar code of the control signaling according to the mapping function, to generate coded bits after interleaving.
Dependencies are inferred from the claim text.