Method for encoding information in communication network
AssigneeHuawei Technologies Co., Ltd.
InventorsGongzheng Zhang, Hejia Luo, Rong Li, Ying Chen, Yunfei Qiao
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Abstract
Embodiments of the application provide a method for rate matching in a wireless communication network. A device obtains K information bits and a target code length M of a polar code, determines, according to a minimum value of a set of values, a mother code length N1, polar encodes the K information bits to obtain an encoded sequence of N1 bits, obtains a target sequence of M bits from the N1 bit encoded sequence, and outputs the M-bit target sequence. When the mother code length N1 is larger than the target code length M, (N1−M) bits of the encoded sequence are punctured or shortened from the N1 bit encoded sequence.
Claims12
An encoding method, comprising:
- obtain an information bit sequence and a target code length M of a polar code;
- when a preset condition related to code rate is satisfied, polar encode the information bit sequence to output a first encoded bit sequence with a first mother code length N1, and repeat one or more bits in the first encoded bit sequence, to obtain a first target polar code with a length M;
- wherein N1 is less than or equal to M, and N1 is an integer power of 2;
- wherein the preset condition related to code rate comprises:
- a first code rate R1 determined based on a quantity K of information bits in the information bit sequence and the target code length M is less than or equal to a preset second code rate R2, wherein the first code rate R1 is equal to K/N1, N1=2n, and n is an integer less than or equal to log2M.
An apparatus in a wireless communication network, comprising at least one processor and at least one memory storing program instructions, wherein when executed by the at least one processor, the program instructions cause the apparatus to:
- obtain an information bit sequence and a target code length M of a polar code;
- when a preset condition related to code rate is satisfied, polar encode the information bit sequence to output a first encoded bit sequence with a first mother code length N1, and repeat one or more bits in the first encoded bit sequence, to obtain a first target polar code with a length M;
- wherein N1 is less than or equal to M, and N1 is an integer power of 2;
- the preset condition related to code rate comprises:
- a first code rate R1 determined based on a quantity K of information bits in the information bit sequence and the target code length M is less than or equal to a preset second code rate R2, wherein the first code rate R1 is equal to K/N1, N1=2n, and n is an integer less than or equal to log2M.
A non-transitory computer readable medium storing program codes thereon for execution by at least one processor in a communication apparatus, wherein the program codes comprise instructions, when executed by the at least one processor, causing the communication apparatus to:
- obtain an information bit sequence and a target code length M of a polar code;
- when a preset condition related to code rate is satisfied, polar encode the information bit sequence to output a first encoded bit sequence with a first mother code length N1, and repeat one or more bits in the first encoded bit sequence, to obtain a first target polar code with a length M;
- wherein N1 is less than or equal to M, and N1 is an integer power of 2;
- wherein the preset condition related to code rate comprises:
- a first code rate R1 determined based on a quantity K of information bits in the information bit sequence and the target code length M is less than or equal to a preset second code rate R2, wherein the first code rate R1 is equal to K/N1, N1=2n, and n is an integer less than or equal to log2M.
Dependencies are inferred from the claim text.