# US 12,004,128 B2 · Method and apparatus for supporting bandwidth part based operations in sidelink communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,128 B2 - Document ID: US12004128B2 - Status: Granted - Kind: B2 - Application number: 18/226,923 - Filed: 2023-07-27 - Published: 2023-11-16 - Granted: 2024-06-04 - Earliest claimed: 2020-05-15 - Assignees: Electronics and Telecommunications Research Institute - Applicants: Electronics and Telecommunications Research Institute - Inventors: Jung Hoon Lee; Cheul Soon Kim; Sung Hyun Moon - Web page: https://patentgrep.com/patent/US12004128B2 ## CPC - H04W 72/04: Wireless resource allocation - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04L 27/2602: {Signal structure} - H04W 76/14: Direct-mode setup - H04W 76/27: Transitions between radio resource control [RRC] states - 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)} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Disclosed are methods and apparatuses for supporting BWP-based operations in sidelink communication. An operation method of a first terminal in a communication system may include receiving, from a base station, configuration information of a mapping relationship between an uplink (UL) bandwidth part (BWP) and a sidelink (SL) BWP; when a UL switching operation for the UL BWP is performed, performing an SL switching operation for the SL BWP mapped to the UL BWP based on the mapping relationship without separate signaling indicating execution of the SL switching operation; and performing sidelink communication with a second terminal in a switched SL BWP. ## Claims ### Claim 1 An operation method of a first terminal in a communication system, the operation method comprising: generating sidelink control information (SCI) including a sidelink (SL) bandwidth part (BWP) indicator; transmitting the SCI to a second terminal in a first SL BWP; performing a SL switching operation from the first SL BWP to a second SL BWP indicated by the SL BWP indicator included in the SCI; and performing sidelink transmission with the second terminal in the second SL BWP, wherein the SCI further includes a slot offset, and the slot offset is an offset between a slot in which the SCI is transmitted and a slot in which the sidelink transmission associated with the SCI is performed, wherein when a first numerology of the first SL BWP is different from a second numerology of the second SL BWP, the slot offset is configured based on the first numerology or the second numerology. ### Claim 2 (depends on 1) The operation method according to claim 1, further comprising, when the sidelink transmission is performed based on a mode 1, receiving downlink control information (DCI) including the SL BWP indicator from a base station. ### Claim 3 (depends on 1) The operation method according to claim 1, wherein when the sidelink transmission is performed based on a mode 2, whether to perform the SL switching operation is autonomously determined by the first terminal. ### Claim 4 (depends on 1) The operation method according to claim 1, wherein the SCI further includes a subchannel offset, and the subchannel offset is an offset between a subchannel in which the SCI is transmitted and a first subchannel in which the sidelink transmission associated with the SCI is performed. ### Claim 5 (depends on 4) The operation method according to claim 4, wherein when the first numerology of the first SL BWP is different from the second numerology of the second SL BWP, the subchannel offset is configured based on the first numerology or the second numerology. ### Claim 6 (depends on 1) The operation method according to claim 1, further comprising receiving an offset indicating an execution time of the SL switching operation from the base station, wherein the SL switching operation is performed in a slot after the offset from a slot in which the SCI is received. ### Claim 7 (depends on 1) The operation method according to claim 1, wherein an SL resource pool is configured based on a reference BWP, and when a reference numerology of the reference BWP is different from the second numerology of the second SL BWP, the SL resource pool is applied to the second SL BWP in consideration of a ratio between the reference numerology and the second numerology. ### Claim 8 (depends on 1) The operation method according to claim 1, wherein the SL switching operation is performed in a slot after an offset configured in consideration of a numerology. ### Claim 9 An operation method of a first terminal in a communication system, the operation method comprising: generating sidelink control information (SCI) including a sidelink (SL) bandwidth part (BWP) indicator; transmitting the SCI to a second terminal in a first SL BWP; performing a SL switching operation from the first SL BWP to a second SL BWP indicated by the SL BWP indicator included in the SCI; and performing sidelink transmission with the second terminal in the second SL BWP, wherein an SL resource pool is configured based on a reference BWP, and when a first numerology of the reference BWP is different from a second numerology of the second SL BWP, the SL resource pool is applied to the second SL BWP in consideration of a ratio between the first numerology and the second numerology. ### Claim 10 An operation method of a first terminal in a communication system, the operation method comprising: generating sidelink control information (SCI) including a sidelink (SL) bandwidth part (BWP) indicator; transmitting the SCI to a second terminal in a first SL BWP; performing a SL switching operation from the first SL BWP to a second SL BWP indicated by the SL BWP indicator included in the SCI; and performing sidelink transmission with the second terminal in the second SL BWP, wherein the SCI further includes a subchannel offset, and the subchannel offset is an offset between a subchannel in which the SCI is transmitted and a first subchannel in which the sidelink transmission associated with the SCI is performed, wherein when a first numerology of the first SL BWP is different from a second numerology of the second SL BWP, the subchannel offset is configured based on the first numerology or the second numerology.