Abstract: A first wireless device receives one or more first messages indicating downlink (DL) discontinuous reception (DRX) parameters indicating a DL DRX on-duration start offset. The first wireless devices determines a starting time of an active time of a sidelink DRX (SL DRX) based on the DL DRX on-duration start offset and a simultaneous reception capability. The wireless device receives, from a second wireless device, one or more sidelink transport blocks during the active time.

Abstract: A wireless device receives radio resource control (RRC) messages comprising configuration parameters of a multicast and broadcast service (MBS). The configuration parameters indicate: a first feedback operation with hybrid automatic repeat request (HARQ) feedback being enabled; and a second feedback operation with the HARQ feedback being disabled. A group common downlink control information (DCI) comprises a field indicating one of the HARQ feedback being enabled or the HARQ feedback being disabled. The wireless device receives a first group common DCI: scheduling a first transport block (TB) of the MBS; and comprising the field indicating the HARQ feedback being enabled. The wireless device transmits, based on the field indicating the HARQ feedback being enabled, a first HARQ feedback for the first TB.

Abstract: Wireless communications may comprise transmissions using a beam. A message may comprise one or more indications of a beam and/or type(s) of signals for downlink and/or uplink transmission using the beam. An acknowledgement may be used to indicate reception of the one or more indications and/or a time offset may be used for applying the beam for the downlink and/or uplink transmission.

Abstract: A wireless device receives one or more radio resource control (RRC) messages comprising one or more configuration parameters of a bandwidth part, wherein the one or more configuration parameters comprise: a first physical uplink control channel (PUCCH) configuration, for reporting uplink feedback, indicating a first PUCCH and a first PUCCH format; and, a second PUCCH configuration, for reporting sidelink feedback, indicating a second PUCCH and a second PUCCH format. The wireless device transmits, via the first PUCCH format and a first PUCCH resource of the first PUCCH configuration, an uplink feedback report of a downlink transport block. The wireless device transmits, via the second PUCCH format and a second PUCCH resource of the second PUCCH configuration, a sidelink feedback report of a sidelink transport block.

Abstract: A method can include receiving, by a wireless device from a base station, one or more radio resource control (RRC) messages that include: a first radio network temporary identifier (RNTI) for a multicast and broadcast service (MBS) session; a second RNTI for unicast transmissions; a first scrambling identity for the MBS session; and a second scrambling identity for the unicast transmissions. The method can also include receiving, based on the first RNTI, a group common downlink control information (DCI) scheduling a first transport block (TB) of the MBS session. The method can further include receiving the first TB being scrambled with a first scrambling sequence initialized by: the first scrambling identity; and the first RNTI. The method can additionally include receiving, based on a second RNTI, a unicast DCI scheduling a second TB of the unicast transmissions and receiving the second TB being scrambled with a second scrambling sequence.

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: A first wireless device receives, from a second wireless device, a first medium access control (MAC) control element (CE) requesting for an inter-UE coordination between the first wireless device and the second wireless device, wherein the first MAC CE indicates a start time and an end time of a selection window for a resource selection procedure of the second wireless device to select resources for one or more sidelink transmissions by the second wireless device. The first wireless device selects a preferred resource set or a non-preferred resource set during the selection window. The first wireless device transmits, to the second wireless device, a second MAC CE indicating the preferred resource set or the non-preferred resource set for the second wireless device to select resources for the one or more sidelink transmissions. The first wireless device receives the one or more sidelink transmissions.

Abstract: A base station may transmit, to a wireless device, one or more radio resource control (RRC) messages comprising configuration parameters of a multicast and broadcast service (MBS). The configuration parameters may comprise parameters of a semi-persistent scheduling (SPS) and at least one indicator, for the SPS, indicating a feedback type from a plurality of feedback types. The plurality of feedback types may comprise acknowledgement-negative acknowledgement (ACK-NACK) feedback, negative acknowledgement only (NACK-only) feedback, and disabled feedback. The base station may transmit, to the wireless device, a downlink control information (DCI) indicating an activation of the SPS. The base station may transmit, to the wireless device via downlink assignments of the SPS, one or more transport blocks (TBs) of the MBS. The base station may receive, from the wireless device based on the feedback type indicated by the at least one indicator, feedback information for the one or more TBs.

Abstract: A first wireless device may receive, from a base station, one or more configuration parameters. The one or more configuration parameters may indicate a first search space of a first cell for scheduling resources of a sidelink carrier and a second search space of a second cell for scheduling resources of the sidelink carrier. The first wireless device may monitor the first search space and the second search space. The first wireless device may receive, based on the monitoring, sidelink downlink control information (DCI) scheduling a sidelink resource of the sidelink carrier. The first wireless device may transmit, to a second wireless device, a sidelink transmission via the sidelink resource.

Abstract: A wireless device receives one or more downlink control information (DCI) indicating a sidelink preemption, first radio resources for sidelink control information (SCI), second radio resources for a sidelink transmission, and wireless device ID. The wireless device transmits the SCI, via first radio resources, in response to the sidelink preemption and based on the wireless device ID being the same as an ID for the wireless device.

Abstract: A wireless device may receive configuration parameters of a bandwidth part (BWP) of a cell. The BWP may comprise resource block (RB) sets having respective RB indexes. The wireless device may receive, during a downlink control channel occasion, downlink control information (DCI) via a RB set of the RB sets of the BWP of the cell. The wireless device may transmit a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook comprising HARQ-ACK information bits corresponding to a plurality of DCIs, comprising the DCI. Each HARQ-ACK information bit, of the HARQ-ACK information bits, may correspond to a respective DCI of the plurality of DCIs, and the HARQ-ACK information bits may be in order of the RB indexes of the RB sets via which the plurality of DCIs are received.

Abstract: A wireless device receives configuration parameters indicating that a first subcarrier spacing (SCS) of a first sidelink bandwidth part (BWP) of a first sidelink carrier is same as a second SCS of a second sidelink BWP of a second sidelink carrier. The configuration parameters further indicate that a first physical sidelink shared channel (PSSCH) starting symbol, within a slot of the first sidelink carrier, is same as a second PSSCH starting symbol, within the slot of the second sidelink carrier. The wireless device transmits, via a first sidelink slot of the first sidelink BWP of the first sidelink carrier and based on the first SCS and the first PSSCH starting symbol, a first sidelink signal. The wireless device transmits, via a second sidelink slot of the second sidelink BWP of the second sidelink carrier and based on the second PSSCH starting symbol, a second sidelink signal.

Abstract: A method can include transmitting, by a first wireless device to a second wireless device using a transmission power, at least one of: a first sidelink (SL) transmission of a first carrier; and multiple second SL transmissions, of a second carrier, overlapping in time with the first SL transmission. The transmission power can be based on a comparison between a first priority value associated with the first SL transmission and a second priority value associated with the plurality of SL transmissions.

Abstract: A first wireless device receives first sidelink control information (SCI): scheduling a reception of a first PSSCH, and indicating that the first wireless device transmits a first physical sidelink feedback channel (PSFCH) via a first PSFCH resource. The first wireless device transmits a second SCI: scheduling a transmission of a second PSSCH, and indicating that the first wireless device receives a second PSFCH via the first PSFCH resource. Based on a result of a listen-before-talk (LBT) procedure on a PSFCH transmission associated with the first PSSCH, the first wireless device does not transmit, via the first PSFCH resource, the first PSFCH associated with a first priority value. The first wireless device receives, via the first PSFCH resource, the second PSFCH associated with a second priority value, wherein the second priority value is higher than the first priority value.

Abstract: A first wireless device determines a number of sidelink slots configured in a sidelink resource pool. The first wireless device determines a second reservation period in units of slots based on a first reservation period in milli-second (ms) and the number of sidelink slots. The first wireless device transmits a transport block via one or more transmission resources selected based on the second reservation period.

Abstract: A wireless device transmits one or more maximum numbers of multiple-input multiple-output (MIMO) layers for reception of a physical downlink shared channel (PDSCH), of a cell, scheduled by downlink control information (DCI) from each transmit/receive point (TRP) of a plurality of TRPs of the cell. The wireless device receives one or more parameters indicating a first number of MIMO layers, for a first TRP of the plurality of TRPs of the cell, wherein the first number of MIMO layers is equal to or less than a first maximum number of MIMO layers, of the one or more maximum numbers of MIMO layers, corresponding to the first TRP. The wireless device receives one or more transport blocks with a second number of MIMO layers, wherein the second number is equal to or less than the first number.

Abstract: A wireless device receives one or more parameters indicating a plurality of sidelink carriers, a discontinuous transmission (DTX) threshold value, and a channel busy ratio (CBR) threshold value for a sidelink carrier selection procedure. The wireless device selects one or more first sidelink carriers from the plurality of sidelink carriers. The wireless device determines that the number DTXs on at least one sidelink carrier is equal to the DTX threshold value. Based on the determining, the wireless device triggers the sidelink carrier selection procedure and transmits a message indicating the at least one sidelink carrier. The wireless device selects, during the triggered sidelink carrier selection procedure and based on a CBR being below the CBR threshold value, a third sidelink carrier from the plurality of sidelink carriers. The wireless device transmits, to the second wireless device, a sidelink transport block (TB) via the third sidelink carrier.

Abstract: Provided are a method for performing sidelink transmission by a first apparatus (100) and an apparatus for supporting same. The method may comprise steps of: determining to perform first sidelink transmission related to LTE and second sidelink transmission related to NR; and performing any one of the first sidelink transmission or the second sidelink transmission on the basis of a priority order of the first sidelink transmission and a priority order of the second sidelink transmission.

Abstract: One embodiment of the present invention relates to a method for transmitting, by a terminal, feedback on a signal from another terminal in a wireless communication system. The method for transmitting feedback information comprises the steps of: receiving signals transmitted by a plurality of terminals; and transmitting feedback information on each of at least parts of the received signals, wherein the feedback information is transmitted together with data of the terminal transmitting the feedback information, and the feedback information includes time information that allows the terminals that transmitted each of the parts of signals that are subject to the feedback to recognize that the feedback information is feedback on the signals transmitted by the same terminals. The UE is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, the BS or a network.

Abstract: A wireless device receives a radio resource control (RRC) message indicating a first resource pool of a sidelink (SL) communication. The wireless device determines, from a candidate resource set in the first resource pool, a SL grant indicating resources for one or more SL transmissions of the SL communication. The wireless device receives, by a medium access control (MAC) layer from a physical layer of the wireless device, an indication of SL listen before talk (LBT) failure of a first resource of the resources indicated in the SL grant. Based on the indication, the wireless device selects, for the first resource, a second resource from the first resource pool excluding resources associated with SL LBT failure. The wireless device transmits, via the second resource, the one or more SL transmissions of the SL communication.