APPARATUS AND METHOD FOR DECODING DATA IN MOBILE COMMUNICATION SYSTEM

• US 20180048421A1
• Filed: 08/11/2017
• Published: 02/15/2018
• Est. Priority Date: 08/12/2016
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: YEO, Jeongho, KIM, Younsun, OH, Jinyoung
• Granted Patent: US 10,355,819 B2
• Time in Patent Office: 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 13/1102 Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
• CPC Class Codes: H03M 13/13 Linear codes
• CPC Class Codes: H03M 13/1515 Reed-Solomon codes
• CPC Class Codes: H03M 13/152 Bose-Chaudhuri-Hocquenghem [BCH] codes
• CPC Class Codes: H03M 13/23 using convolutional codes, e.g. unit memory codes
• CPC Class Codes: H03M 13/29 combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
• CPC Class Codes: H03M 13/2957 Turbo codes and decoding
• CPC Class Codes: H03M 13/353 Adaptation to the channel
• 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: H04L 1/0023 characterised by the signalling
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 1/0046 Code rate detection or code type detection H04L1/0038 takes precedence; detection of the data rate H04L25/0262; for packet format H04L1/0091
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0065 Serial concatenated codes
• CPC Class Codes: H04L 1/0075 Transmission of coding parameters to receiver H04L1/0023 takes precedence
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method for decoding by a terminal in a mobile communication system is provided. The method includes receiving data from a base station, receiving setting information on whether a second channel code which is an outer code for a first channel code is set from the base station, determining whether to decode the data by using the second channel code depending on the setting information, and performing the decoding based on a result of the determined.

Claims

1. A method for decoding by a terminal in a mobile communication system, the method comprising:

receiving data from a base station;

receiving, from the base station, setting information on whether a second channel code which is an outer code for a first channel code is set;

determining whether to decode the data by using the second channel code depending on the setting information; and

performing the decoding based on a result of the determination.

2. The method of claim 1, wherein the first channel code is one of a convolutional code, a low density parity check (LDPC) code, a turbo code, and a polar code, and the second channel code is one of a reed-solomon code, a bose chaudhuri hocquenghem (BCH) code, a raptor code, or a parity bit generation code.

3. The method of claim 1, wherein the setting information is received through a higher layer signaling, and

wherein the setting information indicates that the second channel code is set if the setting information is a first value, and indicates that the second channel code is not set if the setting information is a second value.

4. The method of claim 1, further comprising:

determining whether transmission type information is identical with setting type information that is set in advance that the second channel code is applied, if the setting information is the transmission type information for at least one of the data or a control signal; and

performing the decoding by applying the second channel code if the transmission type information is identical with the setting type information.

5. The method of claim 1, wherein the setting information is set within downlink control information (DCI).

6. The method of claim 1, further comprising:

determining whether to perform the decoding for the second channel code based on at least one of a result of a comparison between a modulation and coding scheme (MCS) and a first threshold value, or a result of a comparison between a size of the data and a second threshold value, if the setting information is at least one of the MCS or the size of data included in control information at the time of data transmission scheduling.

7. The method of claim 1, further comprising:

performing channel coding decoding of the data by a code block unit; and

identifying a first number of code block of which the channel coding decoding is failed according to a result of the channel coding decoding.

8. The method of claim 7, further comprising:

transmitting, to the base station, hybrid automated repeat request (HARQ) acknowledge (ACK) without performing first channel coding decoding and second channel coding decoding of a parity code block, if there is no code block of which the channel coding decoding is failed.

9. The method of claim 7, further comprising:

identifying a second number of code block that is restored through second channel coding decoding related to the second channel code;

restoring the code block of which the channel coding decoding is failed by performing first channel coding decoding and the second channel coding decoding of a parity code block, if the first number is smaller than the second number; and

transmitting, to the base station, hybrid automated repeat request (HARQ) acknowledge (ACK) when the restoring succeeds.

10. The method of claim 7, further comprising:

identifying a second number of code block that is restored through second channel coding decoding related to the second channel code; and

transmitting hybrid automated repeat request (HARQ) negative acknowledge (NACK) to the base station without performing first channel coding decoding and the second channel coding decoding of a parity code block, if the first number is larger than the second number.

11. A method for configuring decoding by a base station in a mobile communication system, the method comprising:

generating setting information on whether a second channel code which is an outer code for a first channel code is set; and

transmitting the setting information to a terminal,

wherein it is determined whether to decode the data transmitted from the base station to the terminal by using the second channel code depending on the setting information.

12. The method of claim 11, wherein the first channel code is one of a convolutional code, a low density parity check (LDPC) code, a turbo code, and a polar code, and the second channel code is one of a reed-solomon code, a bose chaudhuri hocquenghem (BCH) code, a raptor code, or a parity bit generation code.

13. The method of claim 11, wherein the setting information is transmitted through a higher layer signaling, and

wherein the setting information indicates that the second channel code is set if the setting information is a first value, and indicates that the second channel code is not set if the setting information is a second value.

14. The method of claim 11, wherein the setting information is set within downlink control information (DCI).

15. The method of claim 11, wherein it is determined whether to perform decoding for the second channel code based on at least one of a result of a comparison between a modulation and coding scheme (MCS) and a first threshold value, or a result of a comparison between a size of the data and a second threshold value, if the setting information is at least one of the MCS or the size of data included in control information at the time of data transmission scheduling.

16. A terminal performing decoding in a mobile communication system, the terminal comprising:

a transceiver for transmitting and receiving a signal; and

a controller for;

controlling to receive data from a base station,

controlling to receive, from the base station, setting information on whether a second channel code which is an outer code for a first channel code is set,

determining whether to decode the data by using the second channel code depending on the setting information, and

performing the decoding based on a result of the determination.

17. The terminal of claim 16, wherein the setting information is received through a high layer signaling, or

wherein the setting information is set within downlink control information (DCI).

18. The terminal of claim 16, wherein the controller:

determines whether transmission type information is identical with setting type information that is set in advance that the second channel code is applied, if the setting information is the transmission type information for at least one of the data or a control signal, and

performs the decoding by applying the second channel code if the transmission type information is identical with the setting type information.

19. The terminal of claim 16, wherein the controller:

performs channel coding decoding of the data by a code block unit,

identifies a first number of code block of which the channel coding decoding is failed according to a result of the channel coding decoding,

identifies a second number of code block that is restored through second channel coding decoding related to the second channel code, and

transmits hybrid automated repeat request (HARQ) acknowledge (ACK) or HARQ negative acknowledge (NACK) to the base station by comparing the first number with the second number.

20. A base station configuring decoding by a terminal in a mobile communication system, the base station comprising:

a transceiver for transmitting and receiving a signal; and

a controller for;

generating setting information on whether a second channel code which is an outer code for a first channel code is set, and

controlling to transmit the setting information to the terminal,

wherein it is determined whether to decode the data transmitted from the base station to the terminal by using the second channel code depending on the setting information.