Abstract: Provided are a method by which a first device performs wireless communication and an apparatus supporting same. The method may comprise the steps of: acquiring information related to a first channel on a shared spectrum; acquiring information related to a second channel on the shared spectrum; acquiring first data to be transmitted on the first channel and second data to be transmitted on the second channel; selecting a representative sidelink (SL) channel access priority class (CAPC); and during a first channel sensing duration that is on the basis of the representative SL CAPC, performing first type channel access to the first channel and the second channel.

Abstract: A method and apparatus for Sidelink (SL) Discontinuous Reception (DRX) operation based on multiple DRX configurations and prioritization is provided. A third wireless device receives, from a first wireless device, first Sidelink (SL) Discontinuous Reception (DRX) information, and receives, from a second wireless device, second SL DRX information. The third wireless device informs a network about the first and second SL DRX information, each of which is constructed for each pair of source and destination.

Abstract: Proposed is an operating method of a first apparatus (100) in a wireless communication system. The method may comprise the steps of: receiving a COT share request from a second apparatus (200); initiating a timer at a time when the COT share request is received; generating COT before the timer expires, on the basis of the reception of the COT share request; and transmitting information related to the COT to the second apparatus (200) before the timer expires.

Abstract: Provided are a method for performing wireless communication by a first device, and an apparatus for supporting same. The method may comprise: obtaining information related to a time duration which a type 2 listen before talk (LBT)-based transmission is performed; triggering a resource selection; determining a selection window based on the resource selection being triggered; and determining a set of sidelink (SL) candidate resources within the selection window based on sensing. For example, a first SL transmission resource among the set of SL candidate resources may selected within the time duration within the selection window.

Abstract: According to one embodiment of the present disclosure, provided is a method by which a first apparatus performs sidelink communication. In one example, provided is a method by which the first device saves power for sidelink communication in NR V2X.

Abstract: A method for operating first user equipment (UE) associated with UE-to-UE relay in a wireless communication system according to an embodiment comprises the steps in which the first UE: establishes a PC5 RRC connection with a second UE through a relay UE; receives split Quality of Service (QOS)-related information from the relay UE; reports the split QoS-related information to a base station; receives, from a base station, resource allocation information determined on the basis of the split QoS-related information; and transmits data, to be received by the second UE, to the relay UE through a resource corresponding to the resource allocation information.

Abstract: In the present disclosure, a UE may configure a first radio path directly connected to a network and a second radio path indirectly connected to the network through a relay UE, perform a first measurement on the first radio path and a second measurement on the second radio path, and report measurement information about the first measurement and the second measurement to the network based on the first measurement and the second measurement satisfying a specific event. Here, the specific event is satisfied based on one of the first measurement and the second measurement being below a first threshold and the other measurement exceeding a second threshold.

Abstract: In the present disclosure, as device may perform a procedure for configuring a direct path connected to a network, receive, in a radio resource control (RRC) connected state in which the direct path is configured, configuration information regarding an indirect path between the device and the network, and receive a sidelink message from another device configured as a relay device for the indirect path, wherein, based on failure information being included in the sidelink message from the another device, the device may perform bearer suspension for a first bearer related to the indirect path.

Abstract: A method by which a first device performs wireless communication, and a device supporting same are provided. The method may comprise the steps of: transmitting, to a second device, through a physical sidelink control channel (PSCCH), first sidelink control information (SCI) for scheduling a physical sidelink shared channel (PSSCH) and second SCI; transmitting, to the second device, through the PSSCH, the second SCI or a first medium access control (MAC) control element (CE); receiving, from the second device, information related to a channel occupancy time (COT) in response to auxiliary information for generating the COT; and performing, within the COT, sidelink (SL) communication on the basis of type 2 channel access.

Abstract: Provided are a method for a first device to perform wireless communication and a device for supporting same. The method may comprise the steps of: acquiring information related to a first resource set in which an access procedure is performed in a shared spectrum; performing channel sensing on the first resource set; detecting consistent listen-before-talk (LBT) failures on the basis that the number of times the channel sensing on the first resource set fails reaches a threshold value; and changing the first resource set to a second resource set on the basis of detecting the consistent LBT failures.

Abstract: Provided are a method for performing wireless communication by a first device, and an apparatus for supporting same. The method may comprise: obtaining sidelink (SL) discontinuous reception (DRX) configuration; obtaining channel occupancy time (COT), based on a type 1 listen before talk (LBT); receiving first sidelink control information (SCI) for scheduling second SCI and physical sidelink shared channel (PSSCH) through physical sidelink control channel (PSCCH) within active time; and receiving the second SCI and data through the PSSCH within the active time. For example, the SL DRX configuration may include SL DRX onduration timer, time when the SL DRX onduration timer runs may be included in the active time of the first device, and the COT may be included in the active time of the first device.

Abstract: According to an embodiment, an operating method of a first user equipment (UE) related to sidelink discontinuous reception (SL DRX) in a wireless communication system, the method comprises: the first UE establishing a PC5 connection with a second UE; the first UE transmitting SL DRX configuration-related information to the second UE; and the first UE performing transmission on the basis of the SL DRX configuration after an SL DRX configuration application time of the second UE, wherein the SL DRX configuration application time of the second UE is a time related to hybrid automatic repeat request acknowledgement (HARQ ACK) information transmission for a physical sidelink shared channel (PSSCH) including the SL DRX configuration.

Abstract: Proposed are a method for a first device to perform wireless communication and a device for supporting same. For example, the first device may acquire information related to a channel within a shared spectrum. For example, the first device may access a first channel within the shared spectrum within a first duration based on a CAPC. For example, the first device may determine the first channel to be idle on the basis that the power detected within the first duration is smaller than a threshold value. For example, the first device may perform transmission on the first channel on the basis of successfully accessing the channel. For example, the CAPC may be set in advance in order to allow the first device to access a channel within the shared spectrum while out-of-coverage.

Abstract: A sidelink communication method considering height information and an apparatus therefor are provided. A method of transmitting data by a first user equipment (UE) to a second UE in a wireless communication system includes transmitting a physical sidelink control channel (PSCCH) including first sidelink control information (SCI) to the second UE, transmitting a physical sidelink shared channel (PSSCH) including second SCI related to the first SCI to the second UE, and receiving a physical sidelink feedback channel (PSFCH) for the PSSCH from the second UE. The second SCI includes control information about a hybrid automatic repeat request (HARQ) operation, and the control information about the HARQ operation includes control information about a height.

Abstract: According to an embodiment, an operation method of a remote UE in a wireless communication system comprises: transmitting uplink data to a base station by the remote UE; receiving a discovery message from one or more candidate relay UEs by the remote UE; reporting a result of measurement for the one or more candidate relay UEs to the base station by the remote UE; and receiving an RRCReconfiguration message related to a relay UE selected from among the one or more candidate relays from the base station by the remote UE, wherein the remote UE performs RRC re-establishment related to handover failure on the basis of reception of information notifying of cell change from the relay UE.

Abstract: An embodiment relates to a method for a sidelink discontinuous reception (DRX)-related operation of a second user equipment (UE) in a wireless communication system, the method comprising: a step in which a second UE enters a sleep state; and a step in which the second UE switches to an awake state in a predetermined interval and receives a broadcast signal from a first UE, wherein the broadcast signal is received on a resource pool configured only for a sidelink broadcast.

Abstract: A first device receives information related to an absolute location of a positioning reference from the positioning reference; obtains a first PRS reception timing based on a positioning reference signal (PRS) received from the positioning reference; obtains a second PRS reception timing at which a second device receives the PRS from the positioning reference, based on a phase difference value between first RSs received on first subcarriers from the second device; obtains a third PRS reception timing at which a third device receives the PRS from the positioning reference, based on a phase difference value between second RSs received on second subcarriers from the third device; estimates a relative location of the positioning reference, based on the first PRS reception timing, the second PRS reception timing, and the third PRS reception timing; and obtains location information of the first device based on the absolute location and the relative location.

Abstract: One embodiment relates to a method for operating a transmitting user equipment (TX UE) related to sidelink discontinuous reception (SL DRX) in a wireless communication system, the method comprising: a step in which the TX UE establishes a PC5 connection with a receiving user equipment (RX UE); a step in which the TX UE receives information requesting sidelink capability from the RX UE; a step in which the TX UE transmits information related to sidelink capability to the RX UE, wherein the information related to the sidelink capability informs the RX UE of whether the TX UE supports the SL DRX, and on the basis of a serving base station of the TX UE not supporting the SL DRX, the information related to the sidelink capability informs the RX UE that the TX UE does not support the SL DRX.

Abstract: An embodiment relates to an operation method related to sidelink of a relay user equipment (UE) in a wireless communication system, including establishing PC5 RRC connection with a remote UE by the relay UE, transmitting a message related to RRC connection to a base station (BS) by the relay UE, and receiving an RRCReject message from the BS by the relay UE, wherein, based on reception of the RRCReject message, the relay UE transmits a message informing Uu RRC connection failure to the remote UE.

Abstract: A method of a second user equipment (UE) for receiving sidelink data in a wireless communication system comprises receiving configuration information related to a resource pool for sidelink communication from a base station, receiving sidelink control information (SCI) from a first UE, and receiving the sidelink data from the first UE based on the SCI. The SCI is received based on a monitoring related to the SCI. Based on a slot in which the SCI is received, an active time related to sidelink (SL) discontinuous reception (DRX) is determined. Based on a resource pool including the slot in which the SCI is received, whether to perform an operation related to the SL DRX is determined.