Lg Electronics Inc.

Giwon Park

Jongyoul Lee

Kiseon Ryu

Hanbyul Seo

Seungmin Lee

Youngdae Lee

Jeongki Kim

Hangyu Cho

Seoyoung Back

Suhwook Kim

Byungjoo Lee

Dongcheol Kim

Jongwoo Hong

Jinsam Kwak

Hyunhee Park

Taesung Lim

Youngsoo Yuk

Youngjun Jo

Jinsoo Choi

Yongho Kim

Jinyoung Chun

Eunjong Lee

Yongho Seok

Jin Soo Lee

Laeyoung Kim

Wookbong Lee

Jiwon Kang

Daesung Hwang

Jaehoon Chung

Heejeong Cho

KiTae Kim

Hyeyoung Choi

Inuk Jung

Jaehyung Song

Woosuk Ko

Jingu Choi

Genebeck Hahn

Jin Ho Lee

Jayeong Kim

Hyunsik Yang

Mingi Kim

Jeonghwan Yoon

Jeongyun Jeong

Young-soo Yuk

Yongsoo Yuk

Jongyoul; Lee

An operating method of a first device () in a wireless communication system is presented. The method may comprise the steps of: transmitting, to a base station (), information on a group associated with the first device (); receiving, from the base station (), information related to a HARQ feedback option determined on the basis of the information on the group; receiving a PSCCH from a second device (); receiving, from the second device (), a PSSCH associated with the PSCCH; and transmitting, to the second device (), a PSFCH in response to the PSSCH on the basis of the HARQ feedback option.

Method and device for determining HARQ feedback option in NR V2X

Provided are a method by which a first apparatus communicates wirelessly, and an apparatus supporting same. The method comprises the steps of: obtaining a discontinuous reception (DRX) configuration containing information related to a hybrid automatic repeat request (HARQ) round trip time (RTT) timer; receiving, from a base station, downlink control information (DCI) including information related to at least one sidelink (SL) resource and information related to a physical uplink control channel (PUCCH) resource, on the basis of a physical downlink control channel (PDCCH) resource; and starting the HARQ RTT timer after the time domain of the PDCCH resource, on the basis that the PUCCH resource is not configured for the first apparatus, wherein the HARQ RTT timer may indicate the minimum duration before a retransmission grant is expected by the first apparatus.

Method and apparatus for starting SL DRX timer on basis of DCI in NR V2X

A method for a first user equipment (UE) to perform sidelink communication in a wireless communication system according to an embodiment of the present disclosure, the method comprises creating a sidelink grant related to resource allocation mode 2, transmitting, to a second UE, the PSCCH and transmitting, to the second UE, the PSSCH. Based on 1) the second UE behaving based on a SideLink Discontinuous Reception (SL DRX) configuration, and 2) the at least one duration related to the PSCCH and a second stage SCI related to the PSSCH, for transmission of a Medium Access Control Protocol Data Unit (MAC PDU) which is based on the sidelink grant, not being in a SL DRX active time of the second UE: a reselection of the resource based on the resource allocation mode 2 is triggered.

Method and apparatus for transmitting and receiving sidelink data in a wireless communication system

The present disclosure relates to connection establishment in a wireless communication system. According to one embodiment of the present disclosure, a method performed by a first wireless device in a wireless communication system comprises the steps of: receiving, from a serving base station, a mobility command including a dedicated random access channel (RACH) configuration for a contention-free random access of a target base station; establishing a connection with a second wireless device in response to the reception of the mobility command; transmitting the dedicated RACH configuration through the connection to the second wireless device; and receiving, from the second wireless device, information for notifying that the dedicated RACH configuration-based mobility has been completed.

Method and device for connection establishment in wireless communication system

An operating method of a first device () in a wireless communication system is presented. The method may comprise the steps of: acquiring an SL DRX configuration, including an SL DRX HARQ RTT timer value, related to a second device; determining a selection window for selecting a plurality of resources; and selecting a plurality of resources on the basis of sensing related to the selection window, wherein the time between the plurality of resources is larger than the SL DRX HARQ RTT timer value.

Method and device for selecting transmission resource on basis of SL DRX HARQ RTT timer operation of reception device in NR V2X

An embodiment relates to a method for selecting a sidelink relay in a wireless communication system. The method comprises: selecting, by remote UE, at least one candidate relay UE; and selecting, by the remote UE, relay UE from among the at least one candidate relay UE, wherein the selection of the at least one candidate relay UE is on the basis of sidelink signal strength of each of the at least one candidate relay UE, and the selection of the relay UE is on the basis of comparison between a cell ID of each of the at least one candidate relay UE and a cell ID selected according to Uu link signal strength.

Operating method related to selection of relay UE in wireless communication system

An embodiment provides an operation method of a relay UE related to a sidelink relay in a wireless communication system, the method comprising: receiving, by a relay UE, a relay request from a first remote UE; and determining, by the relay UE, whether to accept the relay request of the first remote UE, wherein the relay request includes first quality of service (QOS)-related information, and the relay UE accepts the relay request on the basis that resource allocation satisfying the first QoS-related information to the first remote UE is possible.

Operation method of relay UE related to relay establishment request in wireless communication system

Provided are a method for performing wireless communication by a first device relaying communication between a second device and a base station, and an apparatus for supporting same. The method may comprise the steps of: establishing a first radio resource control (RRC) connection to the base station; establishing a PC5 connection to the second device; on the basis that there is no data transmission and reception between the first device and the base station, initiating a Uu data inactivity timer; on the basis that there is no data transmission and reception between the first device and the second device, initiating a sidelink (SL) data inactivity timer; and on the basis that the Uu data inactivity timer and the SL data inactivity timer are expired, releasing the first RRC connection between the first device and the base station.

Method and apparatus for performing relaying on basis of data inactivity timer

The present disclosure relates to sidelink retransmission in wireless communications. According to an embodiment of the present disclosure, a method performed by a first wireless device in a wireless communication system comprises: receiving, from a network, sidelink (SL) resources configured with a hybrid automatic repeat request (HARQ) feedback; selecting one or more logical channels only configured with the HARQ feedback; generating a data unit based on the one or more logical channels only configured with the HARQ feedback; and transmitting, to a second wireless device, the data unit based on the SL resources.

Method and apparatus for sidelink retransmission in wireless communication system

An embodiment of the present disclosure provides a method for performing sidelink communication by a first device. The method may comprise the steps of: determining a first resource pool among a plurality of resource pools on the basis of QoS information of first data; and transmitting the first data to a second device in the first resource pool.

Determination of resource pool in NR V2X

A method for performing wireless communication by a first device and an apparatus supporting the same are proposed. For example, the first device may obtain an SL DRX configuration including information related to an SL DRX cycle and information related to a timer for active time. For example, the timer for active time may include at least one of an SL DRX on-duration timer or an SL DRX inactivity timer. For example, the first device may trigger SL DRX command MAC CE reporting related to the PC5-RRC connection. For example, the first device may cancel the triggered SL DRX command MAC CE reporting, based on an MAC reset for the PC5-RRC connection being requested.

Method and apparatus for performing radio communication related to mac reset in NR V2X

A first UE of the present disclosure identifies a first resource for first data and a second resource for second data, transmits, to a second UE, the first data on the basis of control information for allocating the first resource and the first resource, the control information not including reservation information about the second resource notifying of the location of the second resource on the basis of the time interval between the first resource and the second resource being larger than the time interval permitted for the resource reservation, identifies a third resource for the second data in the activation section of a DRX cycle of the second UE, and transmits, to the second UE, the second data on the basis of control information for allocating the third resource and the third resource.

Method and device for resource allocation in wireless communication system

Provided are a method for performing wireless communication by a first device and a device supporting same. The method may comprise the steps of: receiving, from a second device, a first physical sidelink control channel (PSCCH) and a first physical sidelink shared channel (PSSCH) associated with the first PSCCH; receiving, from a third device, a second PSCCH and a second PSSCH associated with the second PSCCH; storing data received over the first PSSCH in a first buffer; storing data received over the second PSSCH in a second buffer; transmitting, to a base station, a scheduling request (SR) and/or a buffer status report (BSR) associated with the first buffer, on the basis that available data is in the first buffer; receiving information associated with a first resource from the base station as a response to the SR and/or BSR associated with the first buffer; and transmitting the data on the first buffer to a fourth device by means of the first resource.

Method and device for requesting transmission resource for relay in NR V2X

Provided are a method for performing wireless communication by a first device, and a device supporting same. The method may comprise the steps of: establishing a radio resource control (RRC) connection with a base station; establishing a PC5 connection with a second device that relays communication between the first device and the base station; setting, on the basis of establishment of the PC5 connection with the second device, a power saving mode for saving power related to Uu communication between the base station and the first device; and performing communication with the base station on the basis of the power saving mode.

Method and device for performing communication on basis of power saving mode

According to an embodiment of the present disclosure, provided is a method by which a first apparatus performs sidelink communication. The method includes the steps of: reserving a plurality of first sidelink transmission resources for transmitting a PSCCH and a PSSCH to a second apparatus; transmitting the PSCCH and the PSSCH to the second apparatus through at least one of the plurality of first sidelink transmission resources; on the basis of a failure of the second apparatus to decode sidelink data included in the PSSCH, reselecting a plurality of second sidelink transmission resources for transmitting the sidelink data; and transmitting the sidelink data to the second apparatus on the basis of the plurality of second sidelink transmission resources.

Method and apparatus for reselecting sidelink transmission resource in NR V2X

Growing community of inventors

Seoul, South Korea

Giwon Park