Abstract: A wireless device may receive one or more messages comprising configuration parameters of a bandwidth part (BWP) of a cell, indicating a subcarrier spacing of the BWP and a hopping pattern indicating frequency regions of the cell across time slots. In an embodiment, the frequency regions may be based on the subcarrier spacing of the BWP. The wireless device may further determine, during a time slot, frequency resources of the BWP based on a frequency region indicated in the hopping pattern. The wireless device may communicate with a base station, during the time slot, using resource blocks of the frequency resources.

Abstract: A wireless device receives discontinuous reception configuration parameters indicating a duration associated with a round trip time. The wireless device receives, via a control channel, first control information indicating a resource for a transport block. The wireless device successfully decodes the transport block based on the first control information. The wireless device starts monitoring the control channel after the duration from a time resource that is assigned for an acknowledgment for the transport block. Based on the monitoring, the wireless device receives second control information.

Abstract: A wireless device determines an active duration of a sidelink discontinuous reception (DRX) configuration of a second wireless device to transmit coordination information for inter user equipment (UE) coordination, where the coordination information indicates at least one of a set of resources for one or more sidelink transmissions; or a resource collision occurs between a first resource and a second resource. The wireless device transmits the coordination information to the second wireless device during the determined active duration.

Abstract: The present invention relates to a method, performed by a terminal supporting bundling of a plurality of transmission time intervals (TTIs), for transmitting vehicle-to-X (V2X) data in a wireless communication system, the method comprising: transmitting scheduling information related to transmission of the V2X data; and transmitting the V2X data through bundling of the plurality of the TTIs, wherein, when there is a change in the plurality of bundled TTIs, the terminal transmits the scheduling information which further includes information related to the change.

Abstract: Disclosed are a V2X (vehicle-to-everything) transmission resource selecting method implemented by a terminal in a wireless communication system and a terminal using the method. The method is characterized by: receiving type information for indicating the type of a resource pool; and executing a resource selection, on the basis of partial sensing, and/or a random selection from the resource pool on the basis of the type information.

Abstract: A wireless device may select, based on a first sensing procedure, a first candidate resource set for one or more sidelink transmissions, trigger a second sensing procedure, for the one or more sidelink transmissions, based on one or more first resources of the first selected candidate resource set, and exclude one or more second resources from the one or more first resources based on the second sensing procedure and a reference signal received power (RSRP) of the one or more second resources. The wireless device selects, from the one or more first resources and based on the excluding, a second remaining candidate resource set for the one or more sidelink transmissions and transmit the one or more sidelink transmissions via one or more third resources of the second remaining candidate resource set.

Abstract: Wireless devices may communicate with each other via a sidelink. Sidelink capability information may be sent and/or used to determine configuration parameters for sidelink communications between wireless devices.

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 wireless device triggers transmission of a sidelink transport block and a sidelink discovery signal. The first wireless device prioritizes the sidelink discovery signal over the sidelink transport block. The first wireless device transmits, to a second wireless device, the sidelink discovery signal. The prioritizing may be based on a value of a priority level of the sidelink transport block being greater than or equal to a threshold.

Abstract: A wireless device receives one or more radio resource control (RRC) messages. The RRC messages comprise: one or more first feedback parameters for selecting first feedback radio resources of a sidelink; and one or more second feedback parameters for selecting second feedback radio resources of the sidelink. A sidelink transmission comprising sidelink control information (SCI) indicating a priority level of the sidelink transmission is received. Based on the priority level, one or more radio resources are selected from one of: the first feedback radio resources based on the one or more first feedback parameters; and the second feedback radio resources based on the one or more second feedback parameters. A hybrid automatic repeat request (HARQ) feedback for the sidelink transmission is transmitted via the selected one or more radio resources.

Abstract: One embodiment of the present invention is a method by which a D2D terminal transmits a synchronization signal in a wireless communication system, the synchronization signal transmission method comprising: generating a primary sidelink synchronization signal (PSSS); and transmitting the PSSS, wherein the transmission power of the PSSS is the same as the transmission power of a channel in which system and synchronization-related information is transmitted.

Abstract: An embodiment of the present invention relates to a signal transmission method for transmitting a signal by a sidelink terminal in a wireless communication system, the method comprising the steps of: transmitting a physical sidelink control channel (PSCCH) by using a plurality of symbols in a slot; and transmitting a physical sidelink shared channel (PSSCH) related to the PSCCH, wherein the number of symbols used for the PSCCH transmission is changed according to a change in the number of symbols included in the slot.

Abstract: A wireless device receives one or more radio resource control (RRC) messages comprising configuration parameters of a cell that indicate: a bandwidth part (BWP) inactivity timer; a plurality of downlink BWPs comprising a first downlink BWP and a second downlink BWP; and a sidelink BWP. The wireless device performs sidelink communication on the sidelink BWP. The wireless device determines whether to switch from the first downlink BWP to the second downlink BWP, based on: expiry of the BWP inactivity timer; and a priority of the sidelink communication.

Abstract: A wireless device determines sidelink configurations for sidelink communications that indicate: zone configurations for sidelink transmissions; and communication range thresholds each corresponding to a respective zone configuration of the zone configurations. The wireless device transmits, to one or more second wireless devices, sidelink control information, SCI, that indicates: a zone, of a first zone configuration of the zone configurations, indicating a geographic location of the first wireless device; and a first communication range threshold, of the first zone configuration, indicating a communication range of the sidelink transmissions.

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: 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 a resource to be used for performing a V2X communication within a range satisfying a latency requirement; and performing a V2X communication on the basis of the selected resource.

Abstract: An aspect of the present invention provides a method for receiving a channel state information-reference signal (CSI-RS) by a terminal in a wireless communication system, the method comprising the steps of: receiving, from a base station, CSI-RS configuration information indicating a CSI-RS configuration about mapping of the CSI-RS; and receiving, from the base station, the CSI-RS which is transmitted through multiple antenna ports, on the basis of the received CSI-RS configuration information, wherein, when the CSI-RS configuration is a 32-port CSI-RS configuration into which four 8-port CSI-RS configurations are aggregated, a code division multiplexing (CDM)-8 pattern, in which the number of orthogonal weight vectors is 8, is applied to the 32-port CSI-RS configuration, wherein the CDM-8 pattern may be applied to one resource element (RE)-pair selected for each of the aggregated 8-port CSI-RS configurations.

Abstract: A wireless device transmits one or more radio resource control (RRC) messages indicating assistance information, where the assistant information indicates: an identifier indicating a logical channel; and one or more periodicities associated with the logical channel. The wireless device receives, in response to the assistance information, one or more second RRC messages indicating one or more configured grant configurations. The wireless device triggers a buffer status report in response to data of the logical channel becoming available. In response to receiving one or more activation commands indicating activation of the one or more configured grant configurations, the wireless device cancels the buffer status report.

Abstract: Provided are a sidelink synchronization signal (SLSS) transmission method performed by a terminal in a wireless communication system and a terminal using the same. The method comprises: performing synchronization with one source among a plurality of sources; generating an SLSS; and transmitting the generated SLSS using one resource among a plurality of resources, wherein the one resource is determined according to whether the one source and the terminal are within cell coverage.

Abstract: Described are embodiments for transmitting hybrid automatic repeat request (HARQ) feedback information. In one embodiment, a wireless device receives a first downlink control information (DCI) indicating a first slot for transmission of uplink control information (UCI) comprising the HARQ feedback information. The wireless device receives a second DCI scheduling a plurality of physical uplink channels (PUSCHs) in a plurality of consecutive slots comprising the first slot. The wireless device multiplexes the UCI in a first PUSCH, of the plurality of PUSCHs, in the first slot. In response to a failed listen-before-talk (LBT) procedure for the first slot, the wireless device determines a second slot associated with a second PUSCH of the plurality of PUSCHs, and transmits, in response to a successful LBT procedure for the second slot, the UCI via the second PUSCH.