# US 2022/0284818 A1 · Method for controlling platooning by device in wireless communication system supporting sidelink, and apparatus therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0284818 A1 - Document ID: US20220284818A1 - Status: Published application - Kind: A1 - Application number: 17/634,234 - Filed: 2020-09-04 - Published: 2022-09-08 - Earliest claimed: 2019-09-04 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Minsung KWAK; Seungryul YANG - Web page: https://patentgrep.com/patent/US20220284818A1 ## CPC - G08G 1/22: {Platooning, i.e. convoy of communicating vehicles} - G05D 1/02: Control of position or course in two dimensions - H04W 4/46: for vehicle-to-vehicle communication [V2V] - H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks - B60W 60/001: {Planning or execution of driving tasks} - B60W 2554/804: Relative longitudinal speed - B60W 2556/45: External transmission of data to or from the vehicle - G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93}) - G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT ## Abstract Various embodiments provide a method for controlling platooning of a first platooning group by a first device in a wireless communication system, and an apparatus therefor. The method comprises the steps of: receiving, from a second device, information on a second platooning group controlled by the second device; on the basis of the information on the second platooning group, transmitting a merging request message for merging with the second platooning group; and on the basis of merging of a first platooning group with the second platooning group, updating platooning information related to platooning, wherein the platooning information is updated to include first platooning information relating to the existing first platooning group, which corresponds to sub-group information, and second platooning information relating to the merged first platooning group and the second platooning group. ## Claims ### Claim 1 A method for controlling, by a first device, platooning of a first platooning group in a wireless communication system supporting sidelink, the method comprising: receiving information on a second platooning group controlled by a second device from the second device; transmitting a merge request message for merging with the second platooning group on the basis of the information on the second platooning group; and updating platooning information related to the platooning on the basis of merging of the first platooning group and the second platooning group, wherein the updated platooning information includes first platooning information on the previous first platooning group, which is sub-group information, and second platooning information on the merged first and second platooning groups. ### Claim 2 (depends on 1) The method of claim 1, wherein a platooning level different from a platooning level of the second platooning information is set in the first platooning information. ### Claim 3 (depends on 2) The method of claim 2, wherein the first device notifies platooning members included in the first platooning group of the merging or change of a platooning leader by using platooning levels set in the first platooning information and the second platooning information. ### Claim 4 (depends on 1) The method of claim 1, wherein the merge request message is transmitted using a platooning message set to a predefined PlatooningMessageType. ### Claim 5 (depends on 1) The method of claim 1, wherein the first device receives a merge response message for the merge request message from the second device and determines a platooning member to follow from among platooning members belonging to the second platooning group on the basis of mergePosition defined in the merge response message. ### Claim 6 (depends on 5) The method of claim 5, wherein, when a plurality of values is set in the mergePosition, the first device determines a platooning member to follow from among the platooning members belonging to the second platooning group on the basis of a communication range of the second device. ### Claim 7 (depends on 2) The method of claim 2, wherein the first device separates the first platooning group from the second platooning group by sending a separation request message to the second device when preset separation conditions are satisfied. ### Claim 8 (depends on 7) The method of claim 7, wherein the first device notifies platooning members included in the first platooning group of separation from the second platooning by changing the platooning level of the first platooning information. ### Claim 9 (depends on 7) The method of claim 7, wherein the preset separation conditions include at least one of a case where a movement route related to the second platooning group does not match a movement route related to the first platooning group, a case where the first platooning group deviates from a communication range of the second device, a case where the second device executes a platooning function that is not supported by the first device, and a case where the second device travels at a speed out of a threshold speed set in the first platooning group. ### Claim 10 (depends on 1) The method of claim 1, wherein the merge request message is transmitted through a platooning message including an ITS PDU (Intelligent Transportation System protocol data unit) header, a platooning management field, a location field, and an application field. ### Claim 11 (depends on 1) The method of claim 1, wherein the merge request message is transmitted through an extension field of CAM (Cooperative Awareness Messages) or DENM (Decentralized Environmental Notification Message). ### Claim 12 (depends on 1) The method of claim 1, wherein the first device is determined to serve as a leader of the first platooning group on the basis of a platooning leader recruit message from a platooning management center. ### Claim 13 A method for performing platooning by a third device that is a platooning member of a first platooning group in a wireless communication system supporting sidelink, the method comprising: transmitting platooning information on the first platooning group; receiving a notification message for notification of merging with a second platooning group from a first device serving as a leader of the first platooning group; and updating the platooning information on the basis of the notification message and transmitting the updated platooning information, wherein the updated platooning information includes first platooning information on the previous first platooning group, which is sub-group information, and second platooning information on the merged first and second platooning groups, and a platooning level different from a platooning level of the second platooning group is set in the first platooning information. ### Claim 14 A first device controlling platooning of a first platooning group in a wireless communication system supporting sidelink, the first device comprising: a radio frequency (RF) transceiver; and a processor connected to the RF transceiver, wherein the processor is configured to control the RF transceiver to receive information on a second platooning group controlled by a second device from the second device, to transmit a merge request message for merging with the second platooning group on the basis of the information on the second platooning group, and to update platooning information related to the platooning on the basis of merging of the first platooning group and the second platooning group, wherein the updated platooning information includes first platooning information on the previous first platooning group, which is sub-group information, and second platooning information on the merged first and second platooning groups. ### Claim at position 15 15-17. (canceled)