# US 12,016,012 B2 · Method for transmitting sidelink signal in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,016,012 B2 - Document ID: US12016012B2 - Status: Granted - Kind: B2 - Application number: 17/593,537 - Filed: 2020-05-04 - Published: 2022-05-19 - Granted: 2024-06-18 - Earliest claimed: 2019-05-03 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Seoyoung Back; Seungmin Lee; Heejin Kim - Web page: https://patentgrep.com/patent/US12016012B2 ## CPC - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04W 72/1263: Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 27/2614: {Peak power aspects} - H04L 27/2618: {Reduction thereof using auxiliary subcarriers} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/20: Control channels or signalling for resource management - H04L 27/2602: {Signal structure} - H04L 27/2627: {Modulators} - H04L 27/2649: {Demodulators} - 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 The method for transmitting, by a user equipment, a sidelink signal in a wireless communication system is a sidelink signal transmission method comprising: transmitting sidelink control information (SCI); mapping, to a plurality of sub-carriers, at least one complex-valued modulation symbol, which is related to a sidelink data signal, and a preset value; generating the sidelink data signal by modulating the at least one complex-valued modulation symbol and the preset value by orthogonal frequency division multiplexing (OFDM); and transmitting the sidelink data signal on the basis of the SCI, wherein the SCI comprises information regarding a sub-carrier set including at least one sub-carrier, to which the preset value is mapped, from among the plurality of sub-carriers, and at least one of the location and number in a frequency domain of the at least one sub-carrier, to which the preset value is mapped, is different for each sub-carrier set. ## Claims ### Claim 1 A method of transmitting a sidelink signal by a user equipment (UE) in a wireless communication system, the method comprising: transmitting sidelink control information (SCI); receiving information about a predefined function; mapping at least one complex-valued modulation symbol associated with a sidelink data signal and a preconfigured value to a plurality of subcarriers; generating the sidelink data signal by orthogonal frequency division multiplexing (OFDM)-modulating the at least one complex-valued modulation symbol and the preconfigured value; and transmitting the sidelink data signal based on the SCI, wherein the SCI includes information about a subcarrier set including at least one subcarrier to which the preconfigured value is mapped among the plurality of subcarriers, wherein the subcarrier set is associated with a specific index value, wherein based on the subcarrier set being defined on an OFDM symbol basis, the information about the subcarrier set includes an index value of a subcarrier set defined for an earliest OFDM symbol in the time domain among a plurality of OFDM symbols associated with the sidelink data signal, wherein the predefined function is used to determine subcarrier sets defined for remaining OFDM symbols except for the earliest OFDM symbol in the time domain among the plurality of OFDM symbols associated with the sidelink data signal, and wherein at least one of a frequency-domain position or number of the at least one subcarrier to which the preconfigured value is mapped is different in each subcarrier set. ### Claim 2 (depends on 1) The method according to claim 1, wherein the number of the at least one subcarrier included in the subcarrier set is different in each subcarrier set. ### Claim 3 (depends on 1) The method according to claim 1, wherein the preconfigured value is a value set to minimize a peak to average power ratio (PAPR) of the sidelink data signal. ### Claim 4 An apparatus for a user equipment (UE) in a wireless communication system, the apparatus comprising: at least one processor; and at least one memory operably coupled to the at least one processor and storing at least one instruction causing the at least one processor to perform operations, wherein the operations include: transmitting sidelink control information (SCI); receiving information about a predefined function; mapping at least one complex-valued modulation symbol associated with a sidelink data signal and a preconfigured value to a plurality of subcarriers; generating the sidelink data signal by orthogonal frequency division multiplexing (OFDM)-modulating the at least one complex-valued modulation symbol and the preconfigured value; and transmitting the sidelink data signal based on the SCI, wherein the SCI includes information about a subcarrier set including at least one subcarrier to which the preconfigured value is mapped among the plurality of subcarriers, wherein the subcarrier set is associated with a specific index value, wherein based on the subcarrier set being defined on an OFDM symbol basis, the information about the subcarrier set includes an index value of a subcarrier set defined for an earliest OFDM symbol in the time domain among a plurality of OFDM symbols associated with the sidelink data signal, wherein the predefined function is used to determine subcarrier sets defined for remaining OFDM symbols except for the earliest OFDM symbol in the time domain among the plurality of OFDM symbols associated with the sidelink data signal, and wherein at least one of a frequency-domain position or number of the at least one subcarrier to which the preconfigured value is mapped is different in each subcarrier set. ### Claim 5 (depends on 4) The apparatus according to claim 4, wherein the UE is an autonomous driving vehicle or is included in an autonomous driving vehicle.