Abstract: A wireless device receives one or more messages indicating transmission resource pools of a sidelink, where the transmission resource pools comprise a first transmission resource pool and a second transmission resource pool. In some cases, the wireless device is allowed to use the second transmission resource pool based on one or more thresholds associated with sidelink transport blocks. Based on a transport block meeting the one or more thresholds, the wireless device selects one or more sidelink resources from the second transmission resource pool. The wireless device transmits the transport block via the one or more sidelink resources.

Abstract: A wireless device transmits assistance information including first configuration parameters indicating that each cell group of cell groups is associated with a maximum number of multiple-input multiple-output (MIMO) layers for a power saving operation of the wireless device with each of the cell groups operating in a different frequency range. Second configuration parameters, for the power saving operation, are received including: a first maximum number of MIMO layers for a first bandwidth part (BWP) of a first cell group of the cell groups, and a second maximum number of MIMO layers for a second BWP of the first cell. Based on the first cell belonging to the first cell group, the first maximum number and the second maximum number are each less than or equal to the maximum number corresponding to the first cell group.

Abstract: A wireless device receives a sidelink control information (SCI) that may schedule a transport block and may also indicate a first repetition value. The wireless device may also receive a transport block via a physical sidelink shared channel (PSSCH). Based on a comparison of the first repetition value received via the SCI and a repetition threshold, the wireless device may determine to transmit an acknowledgment for the received transport block. The wireless device may then transmit the acknowledgment for the received transport block.

Abstract: The present specification provides a method for transmitting a grant related to sidelink transmission of a remote UE, through a UE-to-network relay in a wireless communication system. A method performed by a relay UE comprises the steps of: receiving a first control message related to a grant from a serving base station, wherein the first control message includes an identifier for identifying a remote UE, first control information related to a time point of monitoring the grant, and second control information related to a time point at which the relay UE relays the grant to the remote UE; receiving the grant from the serving base station on the basis of the first control information; and transmitting the grant to the remote UE on the basis of the identifier and the second control information.

Abstract: Provided are a method for transmitting a signal by a terminal for vehicle-to-everything (V2X) communication in a wireless communication system, and a terminal using the method. The method comprises: performing first group transmission including first transmission and first retransmission; and performing second group transmission including second transmission and second retransmission, wherein the first group transmission and the second group transmission are performed to transmit data, and a resource reservation period for the first group transmission and the second group transmission is a half of a resource reservation period of another terminal which retransmits the data a maximum of only two times.

Abstract: Provided is a method for transmitting a sidelink message by a terminal in a wireless communication system. The method comprises: selecting at least one sidelink message among a plurality of sidelink messages, on the basis of the importance of each of the sidelink messages; selecting at least one carrier among a plurality of predetermined carriers, on the basis of the priority of each of the carriers and the importance of the selected at least one sidelink message; and transmitting the selected at least one sidelink message through the selected at least one carrier, wherein a sidelink message having relatively high importance among the selected at least one sidelink message is preferentially transmitted through a carrier having relatively high priority among the selected at least one carrier.

Abstract: Provided are a method for performing sidelink transmission by a first device (100) in a wireless communication system, and a device for supporting same. The method comprises the steps of: determining a transport block size (TBS) on the basis of whether at least one of an automatic gain control (AGC) symbol and a guard period (GP) symbol is used for sidelink transmission; and performing the sidelink transmission with respect to a second device (200) on the basis of the determined TBS, wherein the AGC symbol may be a symbol which a first device (100) uses for AGC, and the GP symbol may be a symbol which the first device (100) uses for TX/RX switching.

Abstract: A first base station central unit (BS-CU) communicates, with one or more wireless devices, packets via a first cell operating in an unlicensed spectrum. The BS-CU receives, from a first base station distributed unit (BS-DU), a channel occupancy ratio (CR) of the first cell, wherein the CR is for a plurality of time intervals and indicates utilization of unlicensed channel resources that have been utilized for transmissions by the first cell. The BS-CU transmits, to a second base station, the CR.

Abstract: The present invention relates to a method and an apparatus which enable a terminal to transmit a signal for device-to-device (D2D) communication in a wireless communication system. Specifically, the present invention transmits a synchronization signal for D2D communication and a demodulation reference signal (DM-RS) for demodulation of the synchronization signal, wherein the base sequence of the demodulation reference signal is generated using a synchronization reference ID.

Abstract: A wireless device receives configuration parameters of a primary cell and a secondary cell. In response to the secondary cell cross-carrier scheduling the primary cell, the wireless device determines radio link monitoring reference signals based on: one or more first control resource sets (coresets) of the primary cell and one or more second coresets of the secondary cell. The wireless device measures the radio link monitoring reference signals for radio link monitoring of the primary cell.

Abstract: A wireless device may receive a message indicating a priority threshold. The wireless device may receive, from a first wireless device, sidelink control information indicating a first resource of a first sidelink transport block and a priority of the first sidelink transport block. The wireless device may determine a resource, for a sidelink transmission of the wireless device, overlaps with the first resource. The wireless device may release, based on the priority and the priority threshold, the resource for the sidelink transmission.

Abstract: A first wireless device transmits a first sidelink transmission via a first resource, where the first sidelink transmission includes a field indicating resource reservation of a second resource for a second sidelink transmission by the first wireless device. Based on an absence of an acknowledgement (ACK) corresponding to the first sidelink transmission, the first wireless device determines to use the second resource to receive inter user equipment (inter-UE) coordination information from a second wireless device. The first wireless device receives, from the second wireless device and based on the determining, the inter-UE coordination information indicating a set of third resources for one or more third sidelink transmissions by the first wireless device.

Abstract: The present invention provides a vehicle-to-X (V2X) operation method performed by a V2X terminal in a wireless communication system, the method comprising: selecting, in a selection period, a subframe excluding a subframe relating to a subframe in which transmission has been performed during a sensing period; and performing a V2X communication on the basis of the selected subframe.

Abstract: A session management function receives, from a wireless device, a first message comprising delay information for offloaded processing of data for an application. The session management function sends, to the wireless device, based on the delay information, a second message comprising offloading information.

Abstract: According to an embodiment of the present disclosure, a method for performing wireless communication by a UE in a first cell is provided. The method may include: obtaining first N streams based on precoding of a transmit symbol vector obtained based on N data symbols, and transmitting the first N streams to an AP based on first M antennas, wherein the first N streams are received by the AP included in the first cell based on second M antennas, wherein the precoding is performed based on a cross-channel from the UE to a second cell which is different from the first cell, and wherein the N is equal to half of the M, and the M and the N are positive integers.

Abstract: A wireless device transmits, one or more radio resource control (RRC) messages indicating assistance information for a sidelink operation. The assistance information indicates: an identifier indicating a logical channel associated with a sidelink traffic; and one or more periodicities associated with the logical channel. In response to the assistance information, one or more second RRC messages indicating one or more configured grant configurations determined based on the one or more of periodicities of the logical channel is received. The wireless device triggers, a transmission of a buffer status report in response to sidelink data of the logical channel becoming available. A scheduling request (SR) is transmitted. In response to the SR: the transmission of the buffer status report is cancelled; and one or more activation commands indicating activation of the one or more configured grant configurations is received.

Abstract: A wireless device receives one or more configuration parameters including a plurality of sidelink feedback resources, where at least two sidelink feedback resources, of the plurality of sidelink feedback resources, are associated with different values for received signal power, and each of the at least two sidelink feedback resources are at least one of a time resource or a frequency resource. The wireless device selects, based on a received signal power of the different values for the received signal power, a sidelink feedback resource from the at least two sidelink feedback resources. The wireless device transmits a sidelink feedback signal, to a second wireless device, via the sidelink feedback resource.

Abstract: A wireless device initializes a candidate resource set. The candidate resource set comprises candidate resources in a selection window. The wireless device receives a second sidelink transmission. The second sidelink transmission comprises sidelink control information (SCI). The SCI indicates first resources during the selection window. The SCI indicates a priority of the second sidelink transmission. The priority is used for excluding the first resources from the candidate resource set. The wireless device excludes the first resources from the candidate resource set based on the priority being higher than a first priority threshold. The wireless device selects second resources from the candidate resource set based on the excluding of the first resources from the candidate resource set. The wireless device transmits a first sidelink transmission via the second resources.

Abstract: A method by which a first device (100) performs sidelink transmission is provided. The method can comprise the steps of: determining a priority of a first carrier including a plurality of BWPs; allocating transmission power for the first carrier on the basis of the priority; and performing sidelink transmission through the plurality of BWPs on the basis of the transmission power.

Abstract: Wireless communications are described for sidelink congestion control. Sidelink congestion control may be performed based on a processing capability of a wireless device and/or sidelink subcarrier spacing.