# US 12,113,732 B2 · Configuration of data unit for duplicate transmission > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,732 B2 - Document ID: US12113732B2 - Status: Granted - Kind: B2 - Application number: 18/599,072 - Filed: 2024-03-07 - Published: 2024-06-27 - Granted: 2024-10-08 - Earliest claimed: 2020-06-30 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Dongguk Lim; Jinyoung Chun; Jinsoo Choi; Eunsung Park - Web page: https://patentgrep.com/patent/US12113732B2 ## CPC - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 1/0003: {by switching between different modulation schemes} - H04L 1/0009: {by adapting the channel coding (H04L1/1812 takes precedence)} - H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} - H04L 1/1893: {Physical mapping arrangements (physical resource mapping in general H04L5/00)} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04L 27/2602: {Signal structure} - H04L 27/2613: {Structure of the reference signals} - H04L 27/2634: {Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation} - H04B 7/12: Frequency diversity - H04L 1/0068: {by puncturing} - H04L 1/1819: {with retransmission of additional or different redundancy} - H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes - H04L 27/26025: {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003)} - H04L 27/26132: {using repetition} - H04W 84/12: WLAN [Wireless Local Area Networks] - Y02D 30/70: in wireless communication networks - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract The present specification proposes a technical feature for increasing a transmission range of a wireless LAN signal. The wireless LAN signal of the present specification, e.g. a transmission physical protocol data unit (PPDU), may be configured on the basis of a duplicate transmission mode. The transmission PPDU of the present specification may comprise a data unit duplicated in frequency. The data unit duplicated in frequency may be configured on the basis of a total bandwidth of the transmission PPDU. The transmission PPDU of the present specification proposes various training fields for the duplicated data unit. ## Claims ### Claim 1 A method performed in a wireless local area network (LAN), the method comprising: generating an extremely high throughput (EHT) physical protocol data unit (PPDU) based on a duplicate transmission mode, wherein the EHT PPDU includes a universal signal (U-SIG) field for interpreting the EHT PPDU, an EHT signal (EHT-SIG) field being contiguous to the U-SIG field, a short training field (STF) being contiguous to the EHT-SIG field, a long training field (LTF) being contiguous to the STF, and a data field being contiguous to the LTF; wherein the U-SIG field has a length of 2 symbols, wherein the U-SIG field includes a type field having a length of 2 bits, and a value of the type field is related to the duplicate transmission mode, wherein the EHT PPDU is an 80 MHZ EHT PPDU, the U-SIG field is duplicated over each 20 MHz subchannel in the 80 MHz EHT PPDU, and the EHT-SIG field includes a content channel which is duplicated over each 20 MHz subchannel in the 80 MHz EHT PPDU, wherein the data field includes a first 484-tone resource unit (RU) and a second 484-tone RU, and the first 484-tone RU is duplicated to the second 484-tone RU, wherein the STF is configured based on an STF sequence defined for 80 MHz transmission, and wherein the LTF is configured based on an LTF sequence defined for 80 MHz transmission; and transmitting the EHT PPDU. ### Claim 2 (depends on 1) The method of claim 1, wherein the STF sequence is defined as: {M,1,−M,0,−M,1,−M}·(1+j)/√{square root over (2)}, wherein M is defined as: {−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1}. ### Claim 3 (depends on 1) The method of claim 1, wherein the EHT-SIG field includes a modulation and coding scheme (MCS) field related to MCS information applied to the data field, wherein the first 484-tone RU is modulated based on a binary phase shift keying (BPSK) technique and a dual carrier modulation (DCM) technique. ### Claim 4 (depends on 1) The method of claim 1, wherein the EHT PPDU is transmitted through a 6 GHz band without preamble puncturing. ### Claim 5 (depends on 1) The method of claim 1, wherein a sign change is applied to at least a part of the second 484-tone RU to reduce peak-to-average power ratio (PAPR). ### Claim 6 A station (STA) in a wireless local area network (LAN) system, the STA comprising: at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising: generating an extremely high throughput (EHT) physical protocol data unit (PPDU) based on a duplicate transmission mode, wherein the EHT PPDU includes a universal signal (U-SIG) field for interpreting the EHT PPDU, an EHT signal (EHT-SIG) field being contiguous to the U-SIG field, a short training field (STF) being contiguous to the EHT-SIG field, a long training field (LTF) being contiguous to the STF, and a data field being contiguous to the LTF; wherein the U-SIG field has a length of 2 symbols, wherein the U-SIG field includes a type field having a length of 2 bits, and a value of the type field is related to the duplicate transmission mode, wherein the EHT PPDU is an 80 MHZ EHT PPDU, the U-SIG field is duplicated over each 20 MHz subchannel in the 80 MHz EHT PPDU, and the EHT-SIG field includes a content channel which is duplicated over each 20 MHz subchannel in the 80 MHz EHT PPDU, wherein the data field includes a first 484-tone resource unit (RU) and a second 484-tone RU, and the first 484-tone RU is duplicated to the second 484-tone RU, wherein the STF is configured based on an STF sequence defined for 80 MHz transmission, and wherein the LTF is configured based on an LTF sequence defined for 80 MHz transmission; and transmitting the EHT PPDU. ### Claim 7 (depends on 6) The STA of claim 6, wherein the STF sequence is defined as: {M,1,−M,0,−M,1,−M}·(1+j)/√{square root over (2)}, wherein M is defined as: {−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1}. ### Claim 8 (depends on 6) The STA of claim 6, wherein the EHT-SIG field includes a modulation and coding scheme (MCS) field related to MCS information applied to the data field, wherein the first 484-tone RU is modulated based on a binary phase shift keying (BPSK) technique and a dual carrier modulation (DCM) technique. ### Claim 9 (depends on 6) The STA of claim 6, wherein the EHT PPDU is transmitted through a 6 GHz band without preamble puncturing. ### Claim 10 (depends on 6) The STA of claim 6, wherein a sign change is applied to at least a part of the second 484-tone RU to reduce peak-to-average power ratio (PAPR). ### Claim 11 A station (STA) in a wireless local area network (LAN) system, the STA comprising: at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising: receiving an extremely high throughput (EHT) physical protocol data unit (PPDU) based on a duplicate transmission mode, wherein the EHT PPDU includes a universal signal (U-SIG) field for interpreting the EHT PPDU, an EHT signal (EHT-SIG) field being contiguous to the U-SIG field, a short training field (STF) being contiguous to the EHT-SIG field, a long training field (LTF) being contiguous to the STF, and a data field being contiguous to the LTF; wherein the U-SIG field has a length of 2 symbols, wherein the U-SIG field includes a type field having a length of 2 bits, and a value of the type field is related to the duplicate transmission mode, wherein the EHT PPDU is an 80 MHZ EHT PPDU, the U-SIG field is duplicated over each 20 MHz subchannel in the 80 MHz EHT PPDU, and the EHT-SIG field includes a content channel which is duplicated over each 20 MHz subchannel in the 80 MHz EHT PPDU, wherein the data field includes a first 484-tone resource unit (RU) and a second 484-tone RU, and the first 484-tone RU is duplicated to the second 484-tone RU, wherein the STF is configured based on an STF sequence defined for 80 MHz transmission, and wherein the LTF is configured based on an LTF sequence defined for 80 MHz transmission. ### Claim 12 (depends on 11) The STA of claim 11, wherein the STF sequence is defined as: {M, 1, −M, 0, −M, 1, −M}·(1+j)/√{square root over (2)}, wherein M is defined as: {−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1}. ### Claim 13 (depends on 11) The STA of claim 11, wherein the EHT-SIG field includes a modulation and coding scheme (MCS) field related to MCS information applied to the data field, wherein the first 484-tone RU is modulated based on a binary phase shift keying (BPSK) technique and a dual carrier modulation (DCM) technique. ### Claim 14 (depends on 11) The STA of claim 11, wherein the EHT PPDU is transmitted through a 6 GHz band without preamble puncturing. ### Claim 15 (depends on 11) The STA of claim 11, wherein a sign change is applied to at least a part of the second 484-tone RU to reduce peak-to-average power ratio (PAPR).