Method for configuring circular buffer including outer code parity and apparatus therefor

• US 10,116,332 B2
• Filed: 03/14/2017
• Issued: 10/30/2018
• Est. Priority Date: 03/14/2017
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Noh, Kwangseok, Kim, Dongkyu, Kim, Myeongjin, Lee, Sangrim, Lee, Hojae
• Primary Examiner(s): Rizk, Sam
• Application Number:
  US15/458,712
• Publication Number:
  US 20180269899A1
• Time in Patent Office: 595 Days
• CPC Class Codes: H03M 13/09 Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
• CPC Class Codes: H03M 13/116 Quasi-cyclic LDPC [QC-LDPC] codes, i.e. the parity-check matrix being composed of permutation or circulant sub-matrices
• CPC Class Codes: H03M 13/2906 using block codes H03M13/2957 takes precedence
• CPC Class Codes: H03M 13/356 Unequal error protection [UEP]
• CPC Class Codes: H03M 13/6306 Error control coding in combination with Automatic Repeat reQuest [ARQ] and diversity transmission, e.g. coding schemes for the multiple transmission of the same information or the transmission of incremental redundancy H03M13/3761, H03M13/3769 and H03M13/635 take precedence
• CPC Class Codes: H03M 13/6393 Rate compatible low-density parity check [LDPC] codes
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/006 Trellis-coded modulation
• CPC Class Codes: H04L 1/0061 Error detection codes
• CPC Class Codes: H04L 1/0064 Concatenated codes
• CPC Class Codes: H04L 1/1819 with retransmission of additional or different redundancy
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A method and corresponding user equipment (UE) for configuring a circular buffer in a wireless communication system. The method includes: generating a code block including a payload, a first outer code parity, and a second outer code parity from an input signal based on an outer code in a higher layer; generating a codeword from the code block based on an inner code in a physical layer; and configuring a circular buffer including the codeword and one or more second outer code parities. The first outer code parity is generated based on a first portion of the payload, the one or more second outer code parities, to which an encoding is not applied in the physical layer, are generated based on a second portion of the payload, at least a part of the second portion is different from the first portion, the codeword includes the payload, the first outer code parity, and an inner code parity generated from at least part of the code block based on the inner code, and a number of the one or more second outer code parities in the circular buffer is determined according to a maximum size of the codeword or an amount of resources for transmission.

Claims

1. A method for configuring a circular buffer in a wireless communication system, the method performed by a user equipment (UE) and comprising:

generating a code block comprising a payload, a first outer code parity, and a second outer code parity from an input signal based on an outer code in a higher layer;

generating a codeword from the code block based on an inner code in a physical layer; and

configuring a circular buffer comprising the codeword and one or more second outer code parities,

wherein the first outer code parity is generated based on a first portion of the payload,

wherein the one or more second outer code parities, to which an encoding is not applied in the physical layer, are generated based on a second portion of the payload,

wherein at least a part of the second portion is different from the first portion,

wherein the codeword comprises the payload, the first outer code parity, and an inner code parity generated from at least a part of the code block based on the inner code, and

wherein a number of the one or more second outer code parities in the circular buffer is determined according to a maximum size of the codeword or an amount of resources for transmission.

2. The method of claim 1, wherein the inner code is a low density parity check (LDPC) code.

3. The method of claim 1, wherein a plurality of redundancy versions are configured at a starting point of the one or more second outer code parities in the circular buffer.

4. The method of claim 1, wherein the inner code parity comprises:

a first inner code parity generated based on the payload and the first outer code parity; and

a second inner code parity generated based on the payload, the first outer code parity, and the one or more second outer code parities.

5. The method of claim 1, wherein the inner code parity is generated based on the payload and the first outer code parity.

6. The method of claim 1, further comprising:

transmitting data from the configured circular buffer.

7. A user equipment (UE) in a wireless communication system, the UE comprising:

a transceiver configured to transmit and receive signals; and

a processor for controlling the transceiver, wherein the processor is configured to;

generate a code block comprising a payload, a first outer code parity, and a second outer code parity from an input signal based on an outer code in a higher layer;

generate a codeword from the code block based on an inner code in a physical layer; and

configure a circular buffer comprising the codeword and one or more second outer code parities,

wherein the first outer code parity is generated based on a first portion of the payload,

wherein the one or more second outer code parities, to which an encoding is not applied in the physical layer, are generated based on a second portion of the payload,

wherein at least a part of the second portion is different from the first portion,

wherein the codeword comprises the payload, the first outer code parity, and an inner code parity generated from at least a part of the code block based on the inner code, and

wherein a number of the one or more second outer code parities in the circular buffer is determined according to a maximum size of the codeword or an amount of resources for transmission.

8. The UE of claim 7, wherein the inner code is a low density parity check (LDPC) code.

9. The UE of claim 7, wherein a plurality of redundancy versions are configured at a starting point of the one or more second outer code parities in the circular buffer.

10. The UE of claim 7, wherein the inner code parity comprises:

a first inner code parity generated based on the payload and the first outer code parity; and

a second inner code parity generated based on the payload, the first outer code parity, and the one or more second outer code parities.

11. The UE of claim 7, wherein the inner code parity is generated based on the payload and the first outer code parity.

12. The UE of claim 7, wherein the processor is configured to control the transceiver to transmit data from the configured circular buffer.