# US 12,225,540 B2 · Method for switching BWP for sidelink communication, and communication device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,540 B2 - Document ID: US12225540B2 - Status: Granted - Kind: B2 - Application number: 17/632,133 - Filed: 2020-08-05 - Published: 2022-09-01 - Granted: 2025-02-11 - Earliest claimed: 2019-08-12 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Yoonoh Yang; Jinyup Hwang; Sangwook Lee; Suhwan Lim; Manyoung Jung; Jongkeun Park - Web page: https://patentgrep.com/patent/US12225540B2 ## CPC - H04L 5/001: {the frequencies being arranged in component carriers} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0096: {Indication of changes in allocation} - H04W 72/04: Wireless resource allocation - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/044: based on the type of the allocated resource - H04W 92/18: between terminal devices - 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 Provided in one embodiment of the present specification is a method for switching a bandwidth part (BWP) for sidelink communication. The method can comprise the steps of: receiving information about a bandwidth part (BWP) switching timing from a base station; and switching a BWP on the basis of the information about the BWP switching timing. The information about the BWP switching timing can include information about the point of time at which the BWP switching should be started after the information has been received. The information about the BWP switching timing can be received through downlink control information (DCI) or a radio resource control (RRC) signal. ## Claims ### Claim 1 A method for communication, performed by a UE (user equipment), comprising: performing sidelink communication; performing Uu link communication with a base station; performing BWP (bandwidth part) switching between the sidelink communication and the Uu link communication, wherein the BWP switching is operated based on the sidelink communication and the Uu link communication being operated in a same carrier for TDM (Time Division Multiplexing), and wherein the UE skips performing the sidelink communication during a delay by the BWP switching; and receiving information on BWP switching timing from the base station; wherein the BWP switching is operated based on the information on BWP switching timing, wherein the information on BWP switching timing includes information on time point when the UE should start the BWP switching, the time point is after the information on BWP switching timing is received, and wherein the information on BWP switching timing includes i) first information on when the UE should start switching to BWP for sidelink and ii) second information on when the UE should start switching to the BWP for the Uu link with the base station. ### Claim 2 (depends on 1) The method of claim 1, wherein the information on BWP switching timing is received through DCI (downlink control information) or RRC (radio resource control) signal. ### Claim 3 (depends on 1) The method of claim 1, wherein the step of performing the BWP switching comprises: performing switching to BWP for sidelink; and performing switching to BWP for Uu link with the base station. ### Claim 4 A communication device comprising: at least one processor; and at least one memory for storing instructions and operably electrically connectable with the at least one processor, wherein based on the instructions being executed by the at least one processor, the at least one processor performs operations comprising: performing sidelink communication; performing Uu link communication with a base station; performing BWP (bandwidth part) switching between the sidelink communication and the Uu link communication, wherein the BWP switching is operated based on the sidelink communication and the Uu link communication being operated in a same carrier for TDM (Time Division Multiplexing), and wherein the UE skips performing the sidelink communication during a delay by the BWP switching; and receiving information on BWP switching timing from the base station; wherein the BWP switching is operated based on the information on BWP switching timing, wherein the information on BWP switching timing includes information on time point when the device should start the BWP switching, the time point is after the information on BWP switching timing is received, and wherein the information on BWP switching timing includes i) first information on when the device should start switching to BWP for sidelink and ii) second information on when the device should start switching to the BWP for the Uu link with the base station. ### Claim 5 (depends on 4) The device of claim 4, wherein the step of performing BWP switching comprises: performing switching to BWP for sidelink; and performing switching to BWP for Uu link with the base station. ### Claim 6 (depends on 4) The device of claim 4, wherein the information on BWP switching timing is received through DCI (downlink control information) or RRC (radio resource control) signal. ### Claim 7 A chipset equipped in a communication device, comprising: at least one processor; at least one memory for storing instructions and operably electrically connectable with the at least one processor, wherein based on the instructions being executed by the at least one processor, the at least one processor performs operations comprising: performing sidelink communication; performing Uu link communication with a base station; performing BWP (bandwidth part) switching between the sidelink communication and the Uu link communication, wherein the BWP switching is operated based on the sidelink communication and the Uu link communication being operated in a same carrier for TDM (Time Division Multiplexing), and wherein the UE skips performing the sidelink communication during a delay by the BWP switching; and receiving information on BWP switching timing from the base station; wherein the BWP switching is operated based on the information on BWP switching timing, wherein the information on BWP switching timing includes information on time point when the communication device should start the BWP switching, the time point is after the information on BWP switching timing is received, and wherein the information on BWP switching timing includes i) first information on when the communication device should start switching to BWP for sidelink and ii) second information on when the communication device should start switching to the BWP for the Uu link with the base station.