# US 2020/0404684 A1 · Method for v2x communication performed by means of terminal in wireless communication system and terminal using same

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- Number: US 2020/0404684 A1
- Document ID: US20200404684A1
- Status: Published application
- Kind: A1
- Application number: 16/090,571
- Filed: 2017-04-03
- Published: 2020-12-24
- Earliest claimed: 2016-04-01
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Seungmin LEE; Suckchel YANG; Hanbyul SEO; Daesung HWANG; Youngdae LEE
- Web page: https://patentgrep.com/patent/US20200404684A1

## CPC

- H04W 72/535: {based on resource usage policies}
- H04L 1/1664: {the supervisory signal being transmitted together with payload signals; piggybacking}
- H04L 1/1854: {Scheduling and prioritising arrangements}
- H04L 1/1896: {ARQ related signaling}
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04L 5/0058: {Allocation criteria}
- H04L 5/0078: {Timing of allocation}
- H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W 72/566: of the information or information source or recipient
- H04L 5/0012: {Hopping in multicarrier systems}
- H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH}
- H04L 5/1469: {using time-sharing}
- H04W 4/44: for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
- 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

The present invention relates to a method for V2X (vehicle-to-everything) communication performed by means of a terminal in a wireless communication system, the method characterized by: determining whether or not the transmission points of feedback information for sidelink semi-persistent scheduling (SPS) information and feedback information for a wide area network (WAN) physical downlink shared channel (PDSCH) overlap; and transmitting the feedback information for the sidelink SPS information and the feedback information for the WAN PDSCH on the basis of the determination, wherein, if the transmission points of the feedback information for the sidelink SPS information and the feedback information for the WAN PDSCH overlap, the feedback information for the sidelink SPS information and the feedback information for the WAN PDSCH are transmitted by means of multiplexing or transmitted on the basis of priority.

## Claims

### Claim 1

A method for Vehicle-To-Everything (V2X) communication in a wireless communication system, the method performed by a user equipment (UE) and comprising:
determining whether or not a transmission time of feedback information on sidelink Semi Persistent Scheduling (SPS) information and a transmission time of feedback information on a Wide Area Network (WAN) Physical Downlink Shared Channel (PDSCH) overlap; and
transmitting the feedback information on the sidelink SPS information and the feedback information on the WAN PDSCH based on the determination,
wherein, when the transmission time of the feedback information on the sidelink SPS information and the transmission time of the feedback information on the WAN PDSCH overlap, the feedback information on the sidelink SPS information and the feedback information on the WAN PDSCH are transmitted by means of multiplexing or on the basis of a priority order.

### Claim 2 (depends on 1)

The method of claim 1, wherein the feedback information on the sidelink SPS information is acknowledgement (ACK)/negative acknowledgement (NACK) information on a sidelink SPS message, or a transmission indicator indicative of intention to transmit data.

### Claim 3 (depends on 1)

The method of claim 1, wherein the feedback information on the WAN PDSCH is acknowledgement (ACK)/negative acknowledgement (NACK) information on the WAN PDSCH.

### Claim 4 (depends on 1)

The method of claim 1, wherein, when the feedback information on the sidelink SPS information and the feedback information on the WAN PDSCH are transmitted by means of multiplexing, an amount of the feedback information on the WAN PDSCH is transmitted compared to an amount of the feedback information on the sidelink SPS information.

### Claim 5 (depends on 4)

The method of claim 4, wherein one PUCCH resource of the feedback information on the sidelink SPS information is allocated, and two PUCCH resources of the feedback information on the WAN PDSCH are allocated.

### Claim 6 (depends on 1)

The method of claim 1, wherein, when the feedback information on the sidelink SPS information and the feedback information on the WAN PDSCH are transmitted by means of multiplexing, the feedback information on the sidelink SPS information and the feedback information on the WAN PDSCH are multiplexed based on a acknowledgement (ACK)/negative acknowledgement (NACK) channel selection table.

### Claim 7 (depends on 1)

The method of claim 1, when, when the feedback information on the sidelink SPS information and the feedback information on the WAN PDSCH are transmitted by means of multiplexing:
the feedback information on the sidelink SPS information and the feedback information on the WAN PDSCH are multiplexed based on an acknowledgement (ACK)/negative acknowledgement (NACK) channel selection table in a case where a Downlink Assignment Index (DAI) value received by the UE is equal to or smaller than a preset value, and
the feedback information on the sidelink SPS information and the feedback information on the WAN PDSCH are multiplexed based on Physical Uplink Control Channel (PUCCH) format 3 in a case where the DAI value received by the UE is greater than the preset value.

### Claim 8 (depends on 1)

The method of claim 1,
wherein the feedback information on the sidelink SPS information and the feedback information on the WAN PDSCH are prioritized, and
wherein, when the feedback information on the sidelink SPS information and the feedback information on the WAN PDSCH are transmitted on the basis of a priority order, transmission of feedback information of a relatively low priority level is omitted.

### Claim 9 (depends on 8)

The method of claim 8, wherein, when a priority level for the feedback information on the sidelink SPS information is lower than a priority level for the feedback information on the WAN PDSCH, transmission of the feedback information on the sidelink SPS information is omitted.

### Claim 10 (depends on 8)

The method of claim 8, wherein, when a priority level for the feedback information on the WAN PDSCH is lower than a priority level for the feedback information on the sidelink SPS information, transmission of the feedback information on the the WAN PDSCH is omitted.

### Claim 11

A user equipment (UE) comprising:
a Radio Frequency (RF) unit configured to transmit and receive a radio signal; and
a processor configured to operate in conjunction with the RF unit, wherein the processor is further configured:
determine whether or not a transmission time of feedback information on sidelink Semi Persistent Scheduling (SPS) information and a transmission time of feedback information on a Wide Area Network (WAN) Physical Downlink Shared Channel (PDSCH) overlap; and
based on the determination, transmit the feedback information on the sidelink SPS information and the feedback information on the WAN PDSCH,
wherein, when the transmission time of the feedback information on the sidelink SPS information and the transmission time of the feedback information on the WAN PDSCH overlap, the feedback information on the sidelink SPS information and the feedback information on the WAN PDSCH are transmitted by means of multiplexing or on the basis of a priority order.