# US 10,772,075 B2 · Method for transmitting V2X signal of terminal having limited transmission capability and terminal using the method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,772,075 B2 - Document ID: US10772075B2 - Status: Granted - Kind: B2 - Application number: 15/976,385 - Filed: 2018-05-10 - Published: 2018-11-15 - Granted: 2020-09-08 - Earliest claimed: 2017-05-13 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Seungmin Lee; Hanbyul Seo; Hyukjin Chae - Web page: https://patentgrep.com/patent/US10772075B2 ## CPC - H04W 72/02: Selection of wireless resources by user or terminal - H04L 67/12: specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks - H04L 69/14: Multichannel or multilink protocols - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 72/30: Resource management for broadcast services - H04W 72/51: based on terminal or device properties - H04W 8/005: {Discovery of network devices, e.g. terminals} - 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 Provided are a method for transmitting a vehicle-to-everything (V2X) signal performed by a user equipment (UE) having a limited transmission capability in a multi-carrier system and a UE using the method. The method includes selecting a first resource in a first carrier, if using a specific subframe in a second carrier exceeds a transmission capability of the UE considering the first resource, selecting a second resource randomly among the remaining subframes except the specific subframe in the second carrier and transmitting the V2X signal using the first resource and the second resource. ## Claims ### Claim 1 A method for transmitting a vehicle-to-everything (V2X) signal performed by a user equipment (UE) having a limited transmission capability in a multi-carrier system, the method comprising: selecting a first resource in a first carrier; based on the use of a specific subframe in a second carrier exceeding a transmission capability of the UE considering the first resource, randomly selecting a second resource that includes one or more subframes, excluding the specific subframe, in the second carrier; and transmitting the V2X signal using the first resource and the second resource, wherein the selection of the first resource in the first carrier prior to the selection of the second resource in the second carrier is based on an ordering of the first carrier and the second carrier, and wherein the ordering of the first carrier and the second carrier is determined based on a ProSe priority per packet (PPPP) of the V2X signal and a channel busy ratio (CBR). ### Claim 2 (depends on 1) The method of claim 1, wherein a number of transmission carriers that the UE supports is smaller than a number of configured transmission carriers in the specific subframe. ### Claim 3 (depends on 1) The method of claim 1, wherein the UE does not support a frequency band combination including the first resource of the first carrier and the second resource of the second carrier. ### Claim 4 (depends on 1) The method of claim 1, wherein the specific subframe corresponds to a transmission chain switching time of the UE. ### Claim 5 (depends on 1) The method of claim 1, further comprising: receiving V2X configuration information, wherein the V2X configuration information indicates that a transmission resource is selected in an order of the first carrier and the second carrier. ### Claim 6 (depends on 1) The method of claim 1, wherein the first carrier and the second carrier are configured to the UE by carrier aggregation. ### Claim 7 (depends on 1) The method of claim 1, wherein the ordering of the first carrier and the second carrier is based on a ProSe Per Packet Priority (PPPP) value of the V2X signal transmitted on the first carrier and the second carrier. ### Claim 8 (depends on 1) The method of claim 1, wherein the ordering of the first carrier and the second carrier is based on a carrier priority. ### Claim 9 (depends on 1) The method of claim 1, wherein the ordering of the first carrier and the second carrier is based on a carrier index. ### Claim 10 (depends on 1) The method of claim 1, wherein the ordering of the first carrier and the second carrier is based on a carrier bit rate (CBR) measurement. ### Claim 11 A user equipment (UE) comprising: a transceiver configured to transmit and receive a radio signal; and a processor operated in connection with the transceiver, wherein the processor is configured to: select a first resource in a first carrier; based on the use of a specific subframe in a second carrier exceeding a transmission capability of the UE considering the first resource, randomly select a second resource that includes one or more subframes, excluding the specific subframe, in the second carrier; and transmit the V2X signal using the first resource and the second resource, wherein the selection of the first resource in the first carrier prior to the selection of the second resource in the second carrier is based on an ordering of the first carrier and the second carrier, and wherein the ordering of the first carrier and the second carrier is determined based on a ProSe priority per packet (PPPP) of the V2X signal and a channel busy ratio (CBR). ### Claim 12 (depends on 11) The UE of claim 11, wherein a number of transmission carriers that the UE supports is smaller than a number of configured transmission carriers in the specific subframe. ### Claim 13 (depends on 11) The UE of claim 11, wherein the UE does not support a frequency band combination including the first resource of the first carrier and the second resource of the second carrier. ### Claim 14 (depends on 11) The UE of claim 11, wherein the specific subframe corresponds to a transmission chain switching time of the UE. ### Claim 15 (depends on 11) The UE of claim 11, wherein the UE receives V2X configuration information, and wherein the V2X configuration information indicates that a transmission resource is selected in an order of the first carrier and the second carrier. ### Claim 16 (depends on 11) The UE of claim 11, wherein the first carrier and the second carrier are configured to the UE by carrier aggregation. ### Claim 17 (depends on 11) The UE of claim 11, wherein the ordering of the first carrier and the second carrier is based on a ProSe Per Packet Priority (PPPP) value of the V2X signal transmitted on the first carrier and the second carrier. ### Claim 18 (depends on 11) The UE of claim 11, wherein the ordering of the first carrier and the second carrier is based on a carrier priority. ### Claim 19 (depends on 11) The UE of claim 11, wherein the ordering of the first carrier and the second carrier is based on a carrier index. ### Claim 20 (depends on 11) The UE of claim 11, wherein the ordering of the first carrier and the second carrier is based on a carrier bit rate (CBR) measurement.