# US 12,191,997 B2 · Method and apparatus for performing channel coding and decoding in communication or broadcasting system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,191,997 B2 - Document ID: US12191997B2 - Status: Granted - Kind: B2 - Application number: 18/519,771 - Filed: 2023-11-27 - Published: 2024-04-04 - Granted: 2025-01-07 - Earliest claimed: 2017-06-15 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Hyojin Lee; Taehyoung Kim; Sungjin Park; Jeongho Yeo - Web page: https://patentgrep.com/patent/US12191997B2 ## CPC - H03M 13/2906: {using block codes (H03M13/2957 takes precedence)} - H04L 1/0057: {Block codes (H04L1/0061, H04L1/0064 take precedence)} - H03M 13/116: {Quasi-cyclic LDPC [QC-LDPC] codes, i.e. the parity-check matrix being composed of permutation or circulant sub-matrices} - H03M 13/635: {Error control coding in combination with rate matching} - H03M 13/6356: {by repetition or insertion of dummy data, i.e. rate reduction} - H03M 13/6516: {Support of multiple code parameters, e.g. generalized Reed-Solomon decoder for a variety of generator polynomials or Galois fields} - H04L 1/00: Arrangements for detecting or preventing errors in the information received {(correcting synchronisation H04L7/00)} - H04L 1/0003: {by switching between different modulation schemes} - H04L 1/0008: {by supplementing frame payload, e.g. with padding bits} - H04L 1/0011: {applied to payload information} - H04L 1/0041: {Arrangements at the transmitter end} - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 5/0046: {Determination of the number of bits transmitted on different sub-channels} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H03M 13/09: Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit - H04L 1/0009: {by adapting the channel coding (H04L1/1812 takes precedence)} - H04L 1/1819: {with retransmission of additional or different redundancy} - H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes - H04L 1/1854: {Scheduling and prioritising arrangements} - H04L 2001/0093: {Point-to-multipoint} - H03M: CODING; DECODING; CODE CONVERSION IN GENERAL (using fluidic means F15C4/00; optical analogue/digital converters G02F7/00; coding, decoding or code conversion, specially adapted for particular applications, see the relevant subclasses, e.g. G01D, G01R, G06F, G06T, G09G, G10L, G11B, G11C, H04B, H04L, H04M, H04N; ciphering or deciphering for cryptography or other purposes involving the need for secrecy G09C) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Disclosed is a method performed by a user equipment (UE) in a communication system, including receiving, from a base station, downlink control information (DCI) including resource assignment information for a physical downlink shared channel (PDSCH); identifying a number of resource elements (REs) allocated for the PDSCH based on a number symbols for the PDSCH and a number of allocated physical resource blocks (PRBs), wherein a number of REs for a demodulation reference signal (DMRS) is excluded from the number of REs allocated for the PDSCH; identifying intermediate information based on the number of REs allocated for the PDSCH; identifying a transport block size (TBS) based on quantized intermediate information; and receiving, from the base station, the PDSCH based on the TBS. ## Claims ### Claim 1 A method performed by a user equipment (UE) in a communication system, the method comprising: receiving, from a base station, downlink control information (DCI) including resource assignment information for a physical downlink shared channel (PDSCH); identifying a number of resource elements (REs) allocated for the PDSCH based on a number symbols for the PDSCH and a number of allocated physical resource blocks (PRBs), wherein a number of REs for a demodulation reference signal (DMRS) is excluded for defining the number of REs allocated for the PDSCH; identifying a first value N1 corresponding to intermediate information, wherein the first value N1 corresponding to the intermediate information is based on the number of REs allocated for the PDSCH and a number of layers; identifying a transport block size (TBS) based on a second value N2 corresponding to quantized intermediate information, wherein the second value N2 corresponding to the quantized intermediate information is defined based on N1/N, where N is an integer; and receiving, from the base station, the PDSCH based on the TBS. ### Claim 2 (depends on 1) The method of claim 1, wherein the second value N2 corresponding to the quantized intermediate information is defined based on N*└N1/N┘. ### Claim 3 (depends on 1) The method of claim 1, wherein the second value N2 corresponding to the quantized intermediate information is a multiple of 8. ### Claim 4 (depends on 1) The method of claim 1, wherein the first value N1 corresponding to the intermediate information is further based on a modulation order, and a coding rate. ### Claim 5 (depends on 1) The method of claim 1, wherein a number of REs associated with a channel state information reference signal (CSI-RS) and a number of REs associated with a control channel are further excluded from the number of REs allocated for the PDSCH. ### Claim 6 A method performed by a base station in a communication system, the method comprising: identifying a transport block size (TBS) for a physical downlink shared channel (PDSCH); transmitting, to a user equipment (UE), downlink control information (DCI) including resource assignment information for the PDSCH; and transmitting, to the UE, the PDSCH according to the TBS, wherein the TBS is associated with a second value N2 corresponding to quantized intermediate information, wherein the quantized intermediate information is defined based on N1/N, where N is an integer, wherein a first value N1 corresponding to intermediate information is associated with a number of resource elements (REs) allocated for the PDSCH and a number of layers, wherein the number of REs allocated for the PDSCH is associated with a number symbols for the PDSCH and a number of allocated physical resource blocks (PRBs), and wherein a number of REs for a demodulation reference signal (DMRS) is excluded for defining the number of REs allocated for the PDSCH. ### Claim 7 (depends on 6) The method of claim 6, wherein the second value N2 corresponding to the quantized intermediate information is defined based on N*└N1/N┘. ### Claim 8 (depends on 6) The method of claim 6, wherein e first value N1 corresponding to the intermediate information is associated with a modulation order and a coding rate. ### Claim 9 (depends on 6) The method of claim 6, wherein the second value N2 corresponding to the quantized intermediate information is a multiple of 8. ### Claim 10 (depends on 6) The method of claim 6, wherein a number of REs associated with a channel state information reference signal (CSI-RS) and a number of REs associated with a control channel are further excluded from the number of REs allocated for the PDSCH. ### Claim 11 A user equipment (UE) in a communication system, the UE comprising: a transceiver; and at least one processor configured to: receive, from a base station, downlink control information (DCI) including resource assignment information for a physical downlink shared channel (PDSCH), identify a number of resource elements (REs) allocated for the PDSCH based on a number symbols for the PDSCH and a number of allocated physical resource blocks (PRBs), wherein a number of REs for a demodulation reference signal (DMRS) is excluded for defining the number of REs allocated for the PDSCH, identify a first value N1 corresponding to intermediate information, wherein the first value N1 corresponding to the intermediate information is based on the number of REs allocated for the PDSCH and a number of layers, identify a transport block size (TBS) based on a second value N2 corresponding to quantized intermediate information, wherein the second value N2 corresponding to the quantized intermediate information is defined based on N1/N, where N is an integer, and receive, from the base station, the PDSCH based on the TBS. ### Claim 12 (depends on 11) The UE of claim 11, wherein the second value N2 corresponding to the quantized intermediate information is defined based on N*└N1/N┘. ### Claim 13 (depends on 11) The UE of claim 11, wherein the second value N2 corresponding to the quantized intermediate information is a multiple of 8. ### Claim 14 (depends on 11) The UE of claim 11, wherein the first value N1 corresponding to the intermediate information is further based on a modulation order and a coding rate. ### Claim 15 (depends on 11) The UE of claim 11, wherein a number of REs associated with a channel state information reference signal (CSI-RS) and a number of REs associated with a control channel are further excluded from the number of REs allocated for the PDSCH. ### Claim 16 A base station in a communication system, the base station comprising: a transceiver; and at least one processor configured to: identify a transport block size (TBS) for a physical downlink shared channel (PDSCH), transmit, to a user equipment (UE), downlink control information (DCI) including resource assignment information for the PDSCH, and transmit, to the UE, the PDSCH according to the TBS, wherein the TBS is associated with a second value N2 corresponding to quantized intermediate information, wherein the quantized intermediate information is defined based on N1/N, where N is an integer, wherein a first value N1 corresponding to intermediate information is associated with a number of resource elements (REs) allocated for the PDSCH and a number of layers, wherein the number of REs allocated for the PDSCH is associated with a number symbols for the PDSCH and a number of allocated physical resource blocks (PRBs), and wherein a number of REs for a demodulation reference signal (DMRS) is excluded for defining the number of REs allocated for the PDSCH. ### Claim 17 (depends on 16) The base station of claim 16, wherein the second value N2 corresponding to the quantized intermediate information is defined based on N*└N1/N┘. ### Claim 18 (depends on 16) The base station of claim 16, wherein the first value N1 corresponding to the intermediate information is associated with a modulation order and a coding rate. ### Claim 19 (depends on 16) The base station of claim 16, wherein the second value N2 corresponding to the quantized intermediate information is a multiple of 8. ### Claim 20 (depends on 16) The base station of claim 16, wherein a number of REs associated with a channel state information reference signal (CSI-RS) and a number of REs associated with a control channel are further excluded from the number of REs allocated for the PDSCH.