# US 11,115,790 B2 · Method for performing V2X communication in wireless communication system and apparatus therefor

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- Number: US 11,115,790 B2
- Document ID: US11115790B2
- Status: Granted
- Kind: B2
- Application number: 16/611,408
- Filed: 2018-05-08
- Published: 2020-05-07
- Granted: 2021-09-07
- Earliest claimed: 2017-05-08
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Taehun Kim; Jaewook Lee
- Web page: https://patentgrep.com/patent/US11115790B2

## CPC

- H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH}
- H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information}
- H04W 48/16: Discovering, processing access restriction or access information
- H04W 72/02: Selection of wireless resources by user or terminal
- H04W 76/14: Direct-mode setup
- H04W 4/44: for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
- H04W 4/46: for vehicle-to-vehicle communication [V2V]
- H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC]
- H04W 4/90: Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
- H04W 48/12: using downlink control channel
- 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)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A method for performing a V2X communication in a wireless communication system and a device therefor are disclosed. A method for performing, by a user equipment (UE), a vehicle-to-everything (V2X) communication in a wireless communication system includes receiving a transmission request of a V2X message from an upper layer, when receiving the transmission request of the V2X message, selecting a resource for the V2X communication over a PC5 interface if the UE is ‘Not served by evolved universal terrestrial radio access network (E-UTRAN) for V2X communication’, and performing a transmission for the V2X communication over the PC5 interface. If the UE is camped on a cell supporting the V2X communication, and a carrier frequency provided by the cell on which the UE is camped does not belong to a pre-configured carrier frequency the UE intends to use, the UE is considered as ‘Not served by E-UTRAN for V2X communication’.

## Claims

### Claim 1

A method for performing, by a user equipment (UE), a vehicle-to-everything (V2X) communication in a wireless communication system, the method comprising:
receiving, from an upper layer, a request to send a V2X message;
based on the received request to send the V2X message, selecting radio resources for V2X communication over PC5,
wherein the UE is ‘Not served by evolved universal terrestrial radio access network (E-UTRAN) for V2X communication’; and
sending the V2X message over PC5,
wherein the UE is considered as ‘Not served by E-UTRAN for V2X communication’, based on the UE being camped on a cell indicating that V2X communication over PC5 is supported, and carrier frequencies provided by the cell on which the UE is camped not belonging to a provisioned carrier frequency that UE intends to use.

### Claim 2 (depends on 1)

The method of claim 1, wherein the cell on which the UE is camped operates on the carrier frequency, or the carrier frequency is indicated in a system information block (SIB) 21 broadcasted by the cell on which the UE is camped.

### Claim 3 (depends on 1)

The method of claim 1, wherein the cell on which the UE is camped operates in a Mode 4 in which a resource to be used by the UE for the V2X communication is selected in a resource pool configured by the base station.

### Claim 4

A user equipment (UE) performing a vehicle-to-everything (V2X) communication in a wireless communication system, the UE comprising:
a transceiver configured to transmit and receive a radio signal; and
a processor configured to control transceiver,
wherein the processor is configured to:
receive, via transceiver from an upper layer, a request to send a V2X message;
based on the received via transceiver the request to send the V2X message, select radio resources for V2X communication over PC5,
wherein the UE is ‘Not served by evolved universal terrestrial radio access network (E-UTRAN) for V2X communication’; and
sending the V2X message over PC5,
wherein the UE is considered as ‘Not served by E-UTRAN for V2X communication’, based on the UE being camped on a cell indicating that V2X communication over PC5 is supported, and carrier frequencies provided by the cell on which the UE is camped does not belonging to a provisioned carrier frequency that UE intends to use.

### Claim 5 (depends on 4)

The user equipment of claim 4, wherein the cell on which the UE is camped operates on the carrier frequency, or the carrier frequency is indicated in a system information block (SIB) 21 broadcasted by the cell on which the UE is camped.

### Claim 6 (depends on 4)

The user equipment of claim 4, wherein the cell on which the UE is camped operates in a Mode 4 in which a resource to be used by the UE for the V2X communication is selected in a resource pool configured by a base station.