Abstract: Mechanisms for cross-carrier scheduling from a first cell to a second cell in a wireless networking scheme are provided. In one aspect, a method includes receiving, from a base station (BS), a first configuration for scheduling in a first cell having a first subcarrier spacing (SCS), wherein the first configuration is associated with a first search space in the first cell. The method further includes receiving, from the BS, a second configuration for scheduling in the first cell, wherein the second configuration is associated with a second search space in a second cell, and wherein the second cell is associated with a different second SCS. The method further includes determining a number of blind detections (BDs) based on at least one of the first SCS or the second SCS, and monitoring, based on the number of BDs, for downlink control information (DCI) in the first and second search spaces.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, information indicating a beam switching pattern that indicates beams that are to be used by the UE on a per communication basis in a time domain. The UE may communicate with the base station based at least in part on receiving the information indicating the beam switching pattern. Numerous other aspects are provided.

Abstract: Example implementations include a method, apparatus and computer-readable medium of wireless communication, including receiving a configuration of one or more downlink control information (DCI) formats to include a single bit for a redundancy version field. The implementations further include receiving a radio resource control (RRC) message indicating selectable redundancy versions. Additionally, the implementations further include detecting a DCI based on the one or more DCI formats including the single bit for the redundancy version field, the DCI scheduling a transmission. Additionally, the implementations further include selecting a redundancy version from the selectable redundancy versions based on the single bit. Additionally, the implementations further include encoding or decoding the transmission based on the redundancy version.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit an indication that the UE is capable of supporting one or more channels of a first priority and one or more channels of a second priority, where the first priority is higher than the second. The UE may receive signaling indicating a search space set in a control-resource set (CORESET) that corresponds to grant candidates for scheduling the one or more channels of the first priority. The UE may determine a second search space set in the CORESET that corresponds to grant candidates for scheduling the one or more channels of the second priority. The UE may decode, within a search space of the first search space set, a grant for scheduling the one or more channels of the first priority.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a message indicating that the UE is to execute a make-before-break handover procedure. The UE may transmit, during the make-before-break handover procedure and based at least in part on a prioritization rule, a first uplink communication to a target base station. The prioritization rule may indicate a relative priority for different uplink communications included in a group of uplink communications. The group of uplink communications may include at least the first uplink communication to be transmitted by the UE to the target base station and a second uplink communication to be transmitted by the UE to a source base station during the make-before-break handover procedure. Numerous other aspects are described.

Abstract: A method for wireless communication performed by a user equipment (UE) includes receiving, from a base station, a first indication to disable hybrid automatic repeat request (HARQ) feedback for a number of instances of a multicast transport block (TB). The method also includes receiving, from the base station, a second indication identifying a value of the number of instances of the multicast TB. The method further includes receiving, from the base station, one or more instances of the multicast TB. The method still further includes determining, based on the one or more received instances, whether the multicast TB is recoverable. The method further includes selectively transmitting, to the base station, HARQ feedback after all instances of the multicast TB have been transmitted by the base station based on the determination of whether the multicast TB is recoverable.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit a capability message indicating that the UE supports operation in an enhanced uplink carrier aggregation mode for transmission of a first uplink message on a first component carrier overlapping in time with transmission of a second uplink message on a second component carrier. The transmission of the second uplink message may be associated with one or more interruption time gaps on the first component carrier. The UE may transmit the first uplink message on the first component carrier and the second uplink message on the second component carrier in accordance with the enhanced uplink carrier aggregation mode.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) and a network entity may pseudo-randomly generate frequency hopping indexes to support secure communication of sounding reference signals (SRSs). For example, the UE may securely obtain a key associated with communication a set of SRSs via respective portions of system bandwidth for communicating with the network entity. The UE and the network entity may generate a set of frequency hopping indexes using the key. The set of frequency hopping indexes may correspond to the set of SRSs, and each frequency hopping index may indicate a respective portion of the system bandwidth for communication of a corresponding SRS. The UE and the network entity may communicate the set of SRSs in accordance with the set of frequency hopping indexes.

Abstract: The present disclosure relates to methods and devices for wireless communication including an apparatus, e.g., a UE and/or base station. The apparatus may determine an UL Tx switching procedure including a plurality of switching cases, the UL Tx switching procedure associated with one or more Tx chains and/or one or more antenna ports, at least one of the one or more Tx chains or the one or more antenna ports corresponding to one or more CCs. The apparatus may also configure at least one of the one or more Tx chains or the one or more antenna ports associated with a target switching case of the plurality of switching cases. Further, the apparatus may transmit at least one UL transmission based on the configured at least one of the one or more Tx chains or the one or more antenna ports associated with the target switching case.

Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for allowing for the coexistence of legacy and non-legacy PUCCH formats. An example method generally includes generating a first orthogonal sequence for a first payload for a physical uplink control channel (PUCCH) to be transmitted; generating a second orthogonal sequence for a second payload for the PUCCH to be transmitted; mapping the first orthogonal sequence to a first set of virtual resources and the second orthogonal sequence to a second set of virtual resources; mapping the first set of virtual resources to a first set of physical resources and the second set of virtual resources to a second set of physical resources; and transmitting the first and second payloads for the PUCCH on the first and second sets of physical resources.

Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may receive, from a base station, control signaling indicating a set of resources of a sidelink channel available for sidelink communication with a second UE. The first UE may receive a sidelink preemption indication indicating that at least a first resource from the set of resources is preempted. The first UE may communicate a sidelink transmission over the sidelink channel with the second UE based on the sidelink preemption indication. In some cases, the first UE may determine whether the SPI satisfies one or more thresholds and the first UE may communicate the sidelink transmission, or refrain from communicating the sidelink transmission, based on determining whether the SPI satisfies the one or more thresholds.

Abstract: Methods, systems, and devices for wireless communications are described that provide for sidelink preemption. In some examples, a base station may transmit a preemption indication to instruct a user equipment (UE) to refrain from transmitting on a set of resources. In some examples, the preemption indication may be transmitted to a UE through a relay UE, which may adjust timing or resources of the preemption indication, include receipt or generation info of the preemption indication, or refrain from transmitting the preemption indication. Additionally, or alternatively, one or more sidelink UEs may infer a preemption indication from an uplink cancellation indication, and may refrain from performing sidelink communications based on the preemption indication.

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit downlink control information (DCI) to a user equipment (UE) indicating a joint field for at least a first component carrier (CC) and a second CC of a carrier aggregation configuration. For example, the joint field may include a rate matching (RM) indication for the first CC and the second CC, a zero power channel state information reference signal (ZP-CSI-RS) indication for the first CC and the second CC, or both. In some cases, the RM indication may include a common RM resource (RMR) configuration applicable for both the first CC and the second CC or per-CC RMR configurations that indicate separate RMRs for each of the CCs. Additionally, the ZP-CSI-RS indication may include a set identifier that indicates a resource set for ZP-CSI-RS resources for both the first CC and the second CC.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, information that identifies an association between a first cell of a first radio access technology (RAT) and a second cell of a second RAT. The UE may perform a measurement for the first cell. The UE may determine that the measurement for the first cell satisfies a threshold value. The UE may perform an interference canceling operation for a reference signal of the second cell, or a de-weighting operation for one or more resource elements in which the reference signal interferes, based at least in part on the determination that the measurement for the first cell satisfies the threshold value and the association between the first cell and the second cell. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communication are described. In some wireless communications systems, a user equipment (UE) may support two or more uplink switching periods for transmit chain switching. The UE may transmit a UE capability message indicating the UE capability to support a first uplink switching period and a second uplink switching period for transmit chain switching. The first uplink switching period and the second uplink switching period may each correspond to different switching periods associated with configuration switches between different transmit chain configurations of the UE. The UE and a base station may select an uplink switching period from among the first uplink switching period and the second uplink switching period. The UE may transmit an uplink data message to the base station after a preparation time that is based on the uplink switching period.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a beam failure recovery (BFR) message regarding a failed link, wherein the failed link is one of an indirect link with a network node via a relay node or a direct link with the network node, wherein the BFR message is transmitted on one of the indirect link or the direct link that is not the failed link. The UE may receive an updated beam configuration for the failed link on a selected beam indicated by the BFR message. 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, 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: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, a configuration of a control resource set (CORESET), wherein the configuration includes an indication that the CORESET is a single frequency network (SFN) CORESET. The UE may determine one or more transmission configuration indicator (TCI) states for monitoring the SFN CORESET based at least in part on a determination that the UE has not received an activation command that indicates multiple TCI states to be activated. The UE may receive a physical downlink control channel (PDCCH) communication using the one or more TCI states determined for monitoring the SFN CORESET. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may be configured with periodic uplink grants that provide a number of repetitions and a redundancy version (RV) sequence for the repetitions. Prior to the start of an uplink grant period, the UE may determine a set of slots that are available for uplink transmissions in the uplink grant period. Based on the set of slots, the UE may determine a corresponding RV for repetitions of the uplink communication associated with each slot. The slots with uplink transmissions within the uplink grant period may be non-contiguous. Repetitions of an uplink communication may be configured to be transmitted across multiple uplink grant periods, which may be triggered based on a threshold value associated with the repetitions.

Abstract: Methods, systems, and devices for wireless communications are described. A method for wireless communication at a user equipment (UE) may include: receiving a multicast bandwidth part configuration for multicast communications between a base station and the UE, where the multicast bandwidth part configuration includes a maximum number of multiple-input, multiple-output layers to be used for the multicast communications; establishing a multicast link with the base station for multicast communications; determining to use a reduced number of antennas for multicast reception than the number of antennas used for unicast reception, or determining that the UE is able to decode the multicast communications prior to a remaining portion of the multicast communications; and receiving the multicast communications via the reduced number of antennas, or reducing the radio frequency power prior to completion of a number of repetitions or retransmissions of the multicast communications.