Method for encoding information in communication network
AssigneeHuawei Technologies Co., Ltd.
InventorsGongzheng Zhang, Hejia Luo, Rong Li, Ying Chen, Yunfei Qiao
Life of this patent
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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.
Claims18
A method for polar coding, performed by an apparatus in a wireless communication network, comprising:
- obtaining an information bit sequence of K bits and a target code length M, wherein K and M are positive integers, and M≥K;
- determining a code length N based on a minimum value of a set of code length values;
- polar encoding the information bit sequence to obtain an encoded bit sequence with the code length N, wherein N is an integer power of 2;
- rate matching the encoded bit sequence to obtain a rate matched bit sequence with the target code length M;
- and
- outputting the rate matched bit sequence;
- wherein the set of code length values for determining the code length N comprises:
- a first code length value which satisfies with:
- a first code rate R1 is less than or equal to a preset second code rate R2, wherein R1 is determined according to the value K and the first code length value;
- a second code length value which is a preset maximum code length value Nmax, wherein Nmax is an integer power of 2;
- and
- a third code length value which satisfies with:
- a difference between the target code length M and the third code length value is less than a preset range.
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 of K bits and a target code length M, wherein K and M are positive integers, and M≥K;
- determine a code length N based on a minimum value of a set of code length values;
- polar encode the information bit sequence to obtain an encoded bit sequence with the code length N, wherein N is an integer power of 2;
- rate match the encoded bit sequence to obtain a rate matched bit sequence with the target code length M;
- and
- output the rate matched bit sequence;
- wherein the set of code length values for determining the code length N comprises:
- a first code length value which satisfies with:
- a first code rate R1 is less than or equal to a preset second code rate R2, wherein R1 is determined according to the value K and the first code length value;
- a second code length value which is a preset maximum code length value Nmax, wherein Nmax is an integer power of 2;
- and
- a third code length value which satisfies with:
- a difference between the target code length M and the third code length value is less than a preset range.
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 comprises instructions, when executed by the at least one processor, causing the communication apparatus to:
- obtain an information bit sequence of K bits and a target code length M, wherein K and M are positive integers;
- determine a code length N based on a minimum value of a set of code length values;
- polar encode the information bit sequence to obtain an encoded bit sequence with the code length N, wherein N is an integer power of 2;
- rate match the encoded bit sequence to obtain a rate matched bit sequence with the target code length M;
- and
- output the rate matched bit sequence;
- wherein the set of code length values for determining the code length N comprises:
- a first code length value which satisfies with:
- a first code rate R1 is less than or equal to a preset second code rate R2, wherein R1 is determined according to the value K and the first code length value;
- a second code length value which is a preset maximum code length value Nmax, wherein Nmax is an integer power of 2;
- and
- a third code length value which satisfies with:
- a difference between the target code length M and the third code length value is less than a preset range.
Dependencies are inferred from the claim text.