# US 12,192,908 B2 · Method of 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 12,192,908 B2 - Document ID: US12192908B2 - Status: Granted - Kind: B2 - Application number: 17/602,208 - Filed: 2020-04-09 - Published: 2022-06-23 - Granted: 2025-01-07 - Earliest claimed: 2019-04-09 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Jongseob Baek - Web page: https://patentgrep.com/patent/US12192908B2 ## CPC - H04W 52/14: Separate analysis of uplink or downlink - H04W 52/383: {power control in peer-to-peer links} - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 52/24: using SIR [Signal to Interference Ratio] or other wireless path parameters - H04W 52/343: {taking into account loading or congestion level} - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/54: based on quality criteria - H04W 74/08: Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) - H04W 92/18: between terminal devices - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract An aspect of the present disclosure provides a method of transmitting a sidelink signal by a user device in a wireless communication system, the sidelink signal transmission method comprising the steps of: receiving information on at least one channel busy ratio (CBR) value for a sidelink channel from another user device; determining a CBR value for transmission power control on the basis of the information on at least one CBR value and a CBR value measured by the user device; and transmitting a sidelink signal including information on the CBR value for transmission power control to the another user device, wherein the information on the CBR value for transmission power control is commonly used for determination of transmission power of each of the user device and the another user device. ## Claims ### Claim 1 A method of transmitting a signal by a first user equipment (UE) in a wireless communication system, the method comprising: receiving information on Channel Busy Ratio (CBR) values for channels from at least one second UE and a third UE; determining a CBR value for a transmit power control based on the information on the CBR values and a CBR value measured by the first UE; and transmitting the signal including information on the CBR value for the transmit power control, wherein the channels include a primary channel and secondary channels, wherein at least one secondary channel is selected from secondary channels by the at least one second UE, wherein one of the secondary channels excluding the at least one secondary channel is selected by the third UE, wherein the at least one second UE is positioned in front of the third UE, wherein the information on the CBR value for the transmit power control is used for determining a transmit power for the first UE and the at least one second UE and the third UE. ### Claim 2 (depends on 1) The method of claim 1, wherein the CBR value for the transmit power control is determined as a greatest value amongst the CBR values, including the CBR value measured by the first UE. ### Claim 3 (depends on 1) The method of claim 1, wherein the CBR value for the transmit power control is determined as an average value of CBR values, including the CBR value measured by the first UE. ### Claim 4 (depends on 1) The method of claim 1, wherein the information on the CBR value for the transmit power control is used for the determination of the transmit power for the first UE and the at least one second UE and the third UE with respect to the channels. ### Claim 5 (depends on 1) The method of claim 1, further comprising: based on the information on the CBR values, selecting one secondary channel from the secondary channels; and transmitting information on the one secondary channel to the at least one second UE and the third UE. ### Claim 6 (depends on 1) The method of claim 1, wherein the information on the CBR values include all CBR information on each of the secondary channels. ### Claim 7 An apparatus for a first user equipment (UE) in a wireless communication system, the apparatus comprising: at least one processor; and at least one memory operatively connected to the at least one processor to store at least one or more instructions enabling the at least one processor to perform operations, the operations comprising: receiving information on Channel Busy Ratio (CBR) values for channels from at least one second UE and a third UE; determining a CBR value for a transmit power control based on the information on the CBR values and a CBR value measured by the first UE; and transmitting the signal including information on the CBR value for the transmit power control, wherein the channels include a primary channel and secondary channels, wherein at least one secondary channel is selected from secondary channels by the at least one second UE, wherein one of the secondary channels excluding the at least one secondary channel is selected by the third UE, wherein the at least one second UE is positioned in front of the third UE, wherein the information on the CBR value for the transmit power control is used for determining a transmit power for the first UE and the at least one second UE and the third UE. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein the CBR value for the transmit power control is determined as a greatest value amongst the CBR values, including the CBR value measured by the first UE. ### Claim 9 (depends on 7) The apparatus of claim 7, wherein the operations further comprise, based on the information on the CBR values, selecting one secondary channel from the secondary channels and transmitting information on the one secondary channel to the at least one second UE and the third UE. ### Claim 10 (depends on 7) The apparatus of claim 7, wherein the information on the CBR value for the transmit power control is used for the determination of the transmit power for the first UE and the at least one second UE and the third UE with respect to the channels. ### Claim 11 (depends on 7) The apparatus of claim 7, wherein the user equipment comprises an autonomous vehicle or is included in the autonomous vehicle. ### Claim 12 An apparatus for a first user equipment (UE) in a wireless communication system, the apparatus comprising: at least one processor; and at least one memory operatively connected to the at least one processor to store at least one or more instructions enabling the at least one processor to perform operations, the operations comprising: receiving configuration information for channels, wherein the channels include a primary channel and a plurality of secondary channels, selecting one of secondary channels excluding at least one secondary channel selected by at least one second UE, measuring Channel Busy Ratio (CBR) values for the primary channel and a selected one of the secondary channels, and transmitting information on the values to a third UE, wherein the at least one second UE is positioned in front of the first UE.