# US 12,191,999 B2 · Method and apparatus for receiving PPDU on which BCC interleaving has been performed in multi-RU in wireless LAN system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,191,999 B2 - Document ID: US12191999B2 - Status: Granted - Kind: B2 - Application number: 18/232,725 - Filed: 2023-08-10 - Published: 2023-11-30 - Granted: 2025-01-07 - Earliest claimed: 2020-01-28 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Eunsung Park; Jinyoung Chun; Jinsoo Choi; Dongguk Lim - Web page: https://patentgrep.com/patent/US12191999B2 ## CPC - H04L 1/0071: {Use of interleaving (interleaving per se H03M13/27)} - H04L 1/0041: {Arrangements at the transmitter end} - H04L 1/0057: {Block codes (H04L1/0061, H04L1/0064 take precedence)} - H04L 1/0059: {Convolutional codes} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 27/18: Phase-modulated carrier systems, i.e. using phase-shift keying (H04L27/32 takes precedence) - H03M 13/1102: {Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes} - H03M 13/23: using convolutional codes, e.g. unit memory codes - H03M 13/2707: {Simple row-column interleaver, i.e. pure block interleaving} - H04B 7/0452: Multi-user MIMO systems - H04L 27/2626: {Arrangements specific to the transmitter only} - H04L 27/2647: {Arrangements specific to the receiver only (equalisation H04L27/01)} - H04W 84/12: WLAN [Wireless Local Area Networks] - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - 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) - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Proposed are a method and apparatus for receiving a PPDU on which BCC interleaving has been performed in a Multi-RU in a wireless LAN system. Specifically, a reception STA receives, from a transmission STA, a PPDU comprising a data field and decodes the data field. The data field is received via a Multi-RU which is an aggregate of a first RU and a second RU. The data field is generated on the basis of a coded bit string included in a BCC interleaver block. The coded bit string is obtained by interleaving a data bit string on the basis of first and second parameters. The data bit string is interleaved as the data bit string is entered into the BCC interleaver block in rows on the basis of the first parameter and is read out in columns of the BCC interleaver block on the basis of the second parameter. ## Claims ### Claim 1 A method in a wireless Local Area Network (LAN) system, the method comprising: generating, by a transmitting station (STA), a Physical Protocol Data Unit (PPDU) including a data field; and transmitting, by the transmitting STA, the PPDU to a receiving STA, wherein the data field is transmitted with binary convolutional code (BCC) encoding on a multiple-resource unit (MRU), wherein BCC encoded bits of the data field are processed based on interleaver parameters including NCOL, NROW and NROT, wherein based on Dual Carrier Modulation (DCM) not used and a size of the MRU being 52+26 tone MRU, the NCOL is 18, the NROW is 4 X NBPSCS, and the NROT is 18, wherein based on the DCM not used and the size of the MRU being 106+26 tone MRU, the NCOL is 21 and the NROW is 6 X NBPSCS, wherein the NROW is a size of rows of the BCC interleaver block, and wherein the NCOL is a size of columns of the BCC interleaver block. ### Claim 2 (depends on 1) The method of claim 1, wherein based on the DCM not used and the size of the MRU being 106+26 tone MRU, the NROT is 31. ### Claim 3 (depends on 1) The method of claim 1, wherein based on the DCM used and the size of the MRU being 52+26 tone MRU, the NCOL is 12 and the NROW is 3. ### Claim 4 (depends on 3) The method of claim 3, wherein the DCM is used based on the data field modulated with a Binary Phase Shift Keying (BPSK), wherein the number of spatial streams is one, the NROT is not applicable, wherein a number of coded bits per subcarrier per spatial stream is one. ### Claim 5 (depends on 1) The method of claim 1, wherein based on the DCM used and the size of the MRU being 106+26 tone MRU, the NCOL is 21 and the NROW is 3. ### Claim 6 (depends on 5) The method of claim 5, wherein the DCM is used based on the data field modulated with a BPSK, wherein the number of spatial streams is one, the NROT is not applicable, wherein a number of coded bits per subcarrier per spatial stream is one. ### Claim 7 (depends on 1) The method of claim 1, wherein the BCC encoded bits are interleaved based on a BCC interleaver block, wherein the NBPSCS is a number of coded bits per subcarrier in each spatial stream, wherein the NROT is a parameter for frequency rotation, wherein the BCC encoded bits are input along the rows of the BCC interleaver block and read according to the columns of the BCC interleaver block. ### Claim 8 (depends on 7) The method of claim 7, wherein based on a number of spatial streams being 2 or more and 4 or less, frequency rotation is applied to the BCC encoded bits based on the NROT. ### Claim 9 A transmitting station (STA) in a wireless Local Area Network (LAN), the transmitting STA comprising: a memory; a transceiver; and a processor operatively coupled to the memory and the transceiver, wherein the processor is configured to: generate a Physical Protocol Data Unit (PPDU) including a data field; and transmit the PPDU to a receiving STA, wherein the data field is transmitted with binary convolutional code (BCC) encoding on a multiple-resource unit (MRU), wherein BCC encoded bits of the data field are processed based on interleaver parameters including NCOL, NROW and NROT, wherein based on Dual Carrier Modulation (DCM) not used and a size of the MRU being 52+26 tone MRU, the NCOL is 18, the NROW is 4 X NBPSCS, and the NROT is 18, wherein based on the DCM not used and the size of the MRU being 106+26 tone MRU, the NCOL is 21 and the NROW is 6 X NBPSCS, wherein the NROW is a size of rows of the BCC interleaver block, and wherein the NCOL is a size of columns of the BCC interleaver block. ### Claim 10 A method in a wireless Local Area Network (LAN), the method comprising: receiving, by a receiving station (STA), a Physical Protocol Data Unit (PPDU) including a data field from a transmitting STA; and decoding, by the receiving STA, the data field, wherein the data field is data which is processed by binary convolutional code (BCC), encoding on a multiple-resource unit (MRU), wherein BCC encoded bits of the data field are processed based on parameters including NCOL, NROW and NROT, wherein based on Dual Carrier Modulation (DCM) not used and a size of the MRU being 52+26 tone MRU, the NCOL is 18, the NROW is 4 X NBPSCS, and the NROT is 18, and wherein based on the DCM not used and the size of the MRU being 106+26 tone MRU, the NCOL is 21 and the NROW is 6 X NBPSCS, wherein the NROw is a size of rows of the BCC interleaver block, and wherein the NCOL is a size of columns of the BCC interleaver block. ### Claim 11 (depends on 10) The method of claim 10, wherein based on the DCM not used and the size of the MRU being 106+26 tone MRU, the NROT is 31. ### Claim 12 (depends on 10) The method of claim 10, wherein based on the DCM used and the size of the MRU being 52+26 tone MRU, the NCOL is 12 and the NROW is 3. ### Claim 13 (depends on 12) The method of claim 12, wherein the DCM is used based on the data field modulated with a Binary Phase Shift Keying, BPSK, wherein the number of spatial streams is one, the NROT is not applicable, wherein a number of coded bits per subcarrier per spatial stream is one. ### Claim 14 (depends on 10) The method of claim 10, wherein based on the DCM used and the size of the MRU being 106+26 tone MRU, the NCOL is 21 and the NROW is 3. ### Claim 15 (depends on 14) The method of claim 14, wherein the DCM is used based on the data field modulated with a BPSK, wherein the number of spatial streams is one, the NROT is not applicable, wherein a number of coded bits per subcarrier per spatial stream is one. ### Claim 16 A receiving station (STA) in a wireless Local Area Network (LAN), the receiving STA comprising: a memory; a transceiver; and a processor operatively coupled to the memory and the transceiver, wherein the processor is configured to: receive a Physical Protocol Data Unit (PPDU) including a data field from a transmitting STA; and decode the data field, wherein the data field is data which is processed by binary convolutional code (BCC), encoding on a multiple-resource unit (MRU), wherein BCC encoded bits of the data field are processed based on parameters including NCOL, NROW and NROT, wherein based on Dual Carrier Modulation (DCM) not used and a size of the MRU being 52+26 tone MRU, the NCOL is 18, the NROW is 4 X NBPSCS, and the NROT is 18, wherein based on the DCM not used and the size of the MRU being 106+26 tone MRU, the NCOL is 21 and the NROW is 6 X NBPSCS, wherein the NROW is a size of rows of the BCC interleaver block, and wherein the NCOL is a size of columns of the BCC interleaver block. ### Claim 17 (depends on 10) The method of claim 10, wherein the BCC encoded bits are interleaved based on a BCC interleaver block, wherein the NBPSCS is a number of coded bits per subcarrier in each spatial stream, wherein the NROT is a parameter for frequency rotation, wherein the BCC encoded bits are input along the rows of the BCC interleaver block and read according to the columns of the BCC interleaver block. ### Claim 18 (depends on 17) The method of claim 17, wherein based on a number of spatial streams being 2 or more and 4 or less, frequency rotation is applied to the BCC encoded bits based on the NROT. ### Claim 19 A method in a wireless Local Area Network LAN, the method comprising: generating, by a transmitting station STA, a Physical Protocol Data Unit PPDU including a data field; and transmitting, by the transmitting STA, the PPDU to a receiving STA, wherein the data field is transmitted through a multiple-resource unit Multi-RU in which a first resource unit RU and a second RU are aggregated, wherein the data field is generated based on a coded bit string included in a BCC interleaver block, wherein the coded bit string is obtained by interleaving a data bit string based on first and second parameters, wherein the data bit string is interleaved by entering in rows of the BCC interleaver block based on the first parameter and by reading out in columns of the BCC interleaver block based on the second parameter, wherein based on Dual Carrier Modulation DCM not applied, the first RU being 26-tone RU and the second RU being 106-tone RU, a value of the first parameter is 21, and a value of the second parameter is 6×NBPSCS, wherein NBPSCS is a number of coded bits per subcarrier per spatial stream, wherein the NROW is a size of rows of the BCC interleaver block, and wherein the NCOL is a size of columns of the BCC interleaver block.