Abstract: Certain aspects of the present disclosure provide techniques for communicating using sidelink resources allocated in an unlicensed spectrum. A method that may be performed by a first UE includes receiving one or more transmissions from a second UE on one or more sidelink sub-channels spanning one or more resource block (RB) sets of an unlicensed spectrum occupied by the second UE for a channel occupancy time (COT) and transmitting, to the second UE, feedback information corresponding to the one or more received transmissions on a feedback channel based on a mapping between the one or more sidelink sub-channels and the feedback channel that confines the feedback channel to at least the one or more RB sets and one or more guard bands between the one or more RB sets of the unlicensed spectrum occupied by the second UE for the COT.

Abstract: Various aspects provide a method for radio resource allocation to support multicast services from a 5G-NR base station. In some aspects, the method may be performed by a processor of the base station. Various aspects include determining a multicast bandwidth part (BWP) within a carrier bandwidth, sending an indication of the multicast BWP to one or more user equipment (UE) computing devices in communication with the base station, and scheduling transmission of multicast data in the multicast BWP.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first base station may sense a channel based at least in part on a sensing time period. The first base station may receive, from a user equipment (UE), a dynamic frequency selection (DFS) signal on the channel during the sensing time period. The first base station may determine to refrain from communicating on one or more of a beam associated with the DFS-assisted signal or the channel on which the DFS-assisted signal is received for a defined duration of time, based at least in part on an indication of the one or more of the beam or the channel being added to a non-occupancy list. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive information indicating a quantity of repetitions for a physical uplink shared channel transmission that are to be transmitted in at least one time interval that includes time resources configured for downlink communication. The UE may transmit the quantity of repetitions, in respective time intervals that do not include time resources configured for downlink communication, using frequency hopping that is based at least in part on an indexing of the respective time intervals. Numerous other aspects are provided.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a downlink communication including a priority indicator indicating that a first priority for a received transmission is to trigger hybrid automatic repeat request (HARQ) feedback of a first type of HARQ feedback or indicating that a second priority for the received transmission is to trigger HARQ feedback of a second type of HARQ feedback, the first type of HARQ feedback including information associated with link adaptation, the information not included in the second type of HARQ feedback. The UE may transmit the HARQ feedback, as a response to the received transmission, based at least in part on receiving the downlink communication and in accordance with whether the first type of HARQ feedback or the second type of HARQ feedback is triggered. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communications are described. Aspects include configuring a user equipment (UE) to receive control signals from a first transmission reception point (TRP) and a second TRP. A first TRP may transmit a control signal to the UE indicating resources for receiving a medium access control element (MAC-CE), where the control signal includes an indication that associates the MAC-CE with the first TRP. The first TRP may transmit the MAC-CE to the UE which may include a beam update indication for the first TRP. The UE may transmit an acknowledgement to the first TRP based on receiving the MAC-CE. The UE may also transmit an acknowledgment to the second TRP indicating that it has received a beam update indication from the first TRP. In some cases, the first TRP may send a MAC-CE signal to the UE including beam update information for the second TRP.

Abstract: Methods, systems, and devices for wireless communications are described to support resource block (RB) grid alignment at user equipments (UE) in sidelink communications. In a first example, communicating UEs may support different RB grids and a receiving UE may attempt multiple decoding hypotheses for receiving a sidelink control channel from a transmitting UE, where each hypothesis may correspond to a different RB grid. In a second example, an RB grid for a sidelink control channel may be common, or aligned, for a transmitting UE and a receiving UE, such that the receiving UE may receive the sidelink control channel using the common RB grid. In a third example, demodulation reference signals (DMRSs) and resource element (RE) rate matching for a sidelink control channel may be common, or aligned, for a transmitting UE and a receiving UE, such that the receiving UE may receive the control channel using the aligned DMRSs.

Abstract: Some aspects described herein relate transmitting a first stage sidelink control information (SCI) that schedules multiple transport blocks (TBs) of shared channel communications in multiple time divisions, wherein each of the multiple TBs is for a different receiving UE of multiple receiving UEs, transmitting, to a first receiving UE of the multiple receiving UEs and based on the first stage SCI, at least a first TB of the multiple TBs of shared channel communications in a first time division of the multiple time divisions, and transmitting, to a second receiving UE of the multiple receiving UEs and based on the first stage SCI, at least a second TB of the multiple TBs of shared channel communications in a second time division of the multiple time divisions. Other aspects relate to receiving the first stage SCI and at least one TB.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network entity, a configuration of at least one sounding reference signal (SRS) resource, wherein the configuration indicates a pseudo-random sequence for muting an SRS associated with the at least one SRS resource. The UE may transmit the SRS using the at least one SRS resource based at least in part on the pseudo-random sequence. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described in which network nodes may configure linked search space (SS) sets that provide multiple instances of control channel communications. A beam configuration, or transmission configuration indicator (TCI) state, for a downlink transmission scheduled by instances of the control channel communications may be determined based on a control resource set (CORESET) of one or more of the different SS sets. A first network node may decode a first control channel communication from one or more instances of the control channel communications, the first control channel communication indicating a resource allocation for a first downlink communication. The first network node may determine whether one or more TCI states are applied to the first downlink communication based on one or more CORESETs associated with the first control channel communication, and receive the first downlink communication based on the determined one or more TCI states.

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. A user equipment (UE) may receive, via a control channel in a primary cell, one or more downlink control information (DCI) messages that include a secondary cell (SCell) dormancy indication and a request for hybrid automatic repeat request (HARQ) feedback. The DCI messages may have a format associated with downlink scheduling, and fields used to carry the SCell dormancy indication and the request for HARQ feedback may have a configuration that depends on whether the DCI messages are used to schedule a downlink data transmission. Furthermore, in some aspects, a DCI message may include a field that has a value to indicate whether the DCI message does or does not schedule a downlink data transmission, to enable the UE to correctly receive and decode the SCell dormancy indication and the request for HARQ feedback.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling identifying a configuration for a reference signal comprising a single carrier waveform and associated with single carrier signals for a plurality of symbol periods, the configuration indicating a plurality of channels associated with the reference signal and a set of functions associated with the reference signal. The UE may receive, according to the configuration, the reference signal in a first one or more symbol periods of the plurality of symbol periods and the single carrier signals on the plurality of channels in a second one or more symbol periods of the plurality of symbol periods. The UE may perform the set of functions on the received single carrier signals based at least in part on the received reference signal.

Abstract: Certain aspects of the present disclosure provide a method for wireless communications by a transmitter user equipment (UE). The method may include receiving (e.g., from a network entity) a configuration of a first resource pool associated with a second resource pool. The first resource pool includes physical sidelink feedback channel (PSFCH) resources for hybrid automatic repeat request (HARQ) responses for physical sidelink shared channel (PSSCH) transmissions in the second resource pool. The method further includes transmitting (e.g., to a receiver UE) a PSSCH on a resource in the second resource pool and a request for a HARQ response for the PSSCH from a PSFCH resource in the first resource pool. The method further includes receiving (e.g., from the receiver UE) the HARQ response over the PSFCH resource (e.g., in response to the PSSCH).

Abstract: In the context of a slot of a sidelink (SL) communication frame of a user equipment (UE), the slot is configured with a resource element allocation comprising an SL synchronization signal block (S-SSB) occupying a plurality of less than all symbols of the slot, and a plurality of less than all subcarriers of a channel of the slot. The UE determines that an occupied channel bandwidth (OCB) constraint for the slot across the channel will not be met with the resource element allocation. The UE then multiplexes, in response to the determining, a reference signal (RS) across the symbols occupied by the S-SSB in a plurality of resource blocks of the channel not occupied by the S-SSB to meet the OCB constraint. The UE then transmits the slot with the S-SSB and the multiplexed RS.

Abstract: A method of wireless communication, by a user equipment (UE) includes receiving downlink semi-persistent scheduling (SPS) configurations. The method also includes receiving a physical downlink shared channel (PDSCH) transmission for each of the plurality of SPS configurations. Each PDSCH transmission has no associated physical downlink control channel (PDCCH). The method further includes determining whether successful decoding of each of the PDSCH transmissions occurred. The method further includes generating a hybrid automatic repeat request (HARQ) codebook for the PDSCH transmissions based on the determining. The method also includes transmitting the HARQ codebook in a physical uplink control channel (PUCCH) only when at least one ACK is present in the HARQ codebook.

Abstract: Aspects presented herein relate to methods and devices for wireless communication including an apparatus, e.g., a UE and/or a base station. The apparatus may receive, from a base station, a radio resource control (RRC) message including an indication of a number of physical uplink control channel (PUCCH) repetitions. The apparatus may also receive, from the base station, downlink control information (DCI) indicating a codepoint associated with the number of PUCCH repetitions, the codepoint including at least one PUCCH resource indicator (PRI) associated with a PUCCH resource of one or more PUCCH resource sets, the at least one PRI corresponding to the number of PUCCH repetitions. The apparatus may also transmit, to the base station, a PUCCH via the PUCCH resource of the one or more PUCCH resource sets, the transmitted PUCCH corresponding to the number of PUCCH repetitions.

Abstract: Wireless communications systems and methods related to communicating information are provided. A method of wireless communication performed by a user equipment (UE). The method of wireless communication also includes receiving a configuration from a network for uplink transmission using a first plurality of subcarriers, receiving an instruction from the network for interference cancellation with respect to the first plurality of subcarriers; calculating a plurality of symbols and modulating the plurality of symbols on a second plurality of subcarriers in accordance with the instruction from the network for interference cancellation; and transmitting a waveform to the network, the waveform including the first plurality of subcarriers and the second plurality of subcarriers.

Abstract: Aspects described herein relate to indicating search spaces and/or control information formats for receiving multicast/broadcast service (MBS) downlink control information (DCI). A device can receive a search space configuration defining one or more search spaces for detecting communications intended for a group of one or more user equipment (UEs), determine a priority for detecting control information transmitted over a control channel based on the one or more search spaces, and perform, based on the priority, detection for the control information over the control channel based on the one or more search spaces and/or the other defined search spaces.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a power allocation for a first uplink transmission in a component carrier that at least partially overlaps in time with a second uplink transmission in the component carrier, wherein the power allocation is determined based at least in part on a priority order that includes a priority for index values associated with time-domain overlapping uplink transmissions in a same component carrier. The UE may transmit the first uplink transmission in the component carrier based at least in part on the power allocation. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration that indicates one or more cyclic shift parameters or one or more comb offset parameters per sounding reference signal (SRS) port. The UE may transmit one or more SRSs based at least in part on the one or more cyclic shift parameters per SRS port. Numerous other aspects are described.