Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive information identifying a shared channel occupancy for a packet transmission resource and a hop counter value associated with the shared channel occupancy. The user equipment may determine whether to transmit one or more packets in the shared channel occupancy based at least in part on the hop counter value associated with the shared channel occupancy. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, via a first component carrier, control information that triggers transmission of an aperiodic reference signal in a second component carrier. The UE may identify a quasi co-location (QCL) assumption for reception of the aperiodic reference signal in the second component carrier based at least in part on a control resource set not being configured for the second component carrier. The UE may then monitor for the aperiodic reference signal of the second component carrier based on the QCL assumption. In some cases, the UE may transmit a measurement report to a base station based on a measurement of the reference signal.

Abstract: Certain aspects of the present disclosure provide techniques for resource allocation with collision indication for sidelink communication. A method that may be performed by a first user equipment (UE) includes receiving a first sidelink transmission from a second UE indicating a first resource reservation; receiving a second sidelink transmission from a third UE indicating a second resource reservation; and transmitting, to at least the second UE, feedback comprising: hybrid automatic retransmission request (HARQ) feedback regarding the first sidelink transmission; and an indication of whether a collision is detected by the first UE between the first resource reservation and the second resource reservation.

Abstract: A user equipment (UE) communicates on a shared channel using sidelink transmissions. The UE determines a channel access priority for the sidelink transmission based on a channel access priority for the UE, a channel access priority associated with a packet priority of the sidelink transmission, a congestion level for the channel, or a remaining time in a packet delay budget of the sidelink transmission. The UE performs a channel access procedure based on the channel access priority for the sidelink transmission to assess that the channel is clear prior to transmitting the sidelink transmission, and transmits the sidelink transmission on the channel.

Abstract: Certain aspects of the present disclosure provide techniques for enhanced feedback transmission for sidelink communication in unlicensed spectrum.

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for dynamic updates to beam failure detection (BFD) reference signals (RSs) and path loss RS using medium access control-control element (MAC-CE) or downlink control information (DCI). For example, the quasi co-location (QCL) of periodic CSI-RS may be dynamically updated by the MAC-CE or DCI when the periodic CSI-RS is for BFD RS. Also, a semi-persistent CSI-RS or aperiodic CSI-RS may act as a BFD RS. An enhanced update procedure may be used to update the path loss RS dynamically using MAC-CE or DCI. In some cases, the path loss RS parameters updated via MAC-CE or DCI may overwrite the previously RRC configured path loss RS parameters. In another example, if the path loss RS is not configured, then the path loss RS by default may be the spatial relation reference signal of the corresponding uplink beam.

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for dynamic updates to beam failure detection (BFD) reference signals (RSs) and path loss RS using medium access control-control element (MAC-CE) or downlink control information (DCI). For example, the quasi co-location (QCL) of periodic CSI-RS may be dynamically updated by the MAC-CE or DCI when the periodic CSI-RS is for BFD RS. Also, a semi-persistent CSI-RS or aperiodic CSI-RS may act as a BFD RS. An enhanced update procedure may be used to update the path loss RS dynamically using MAC-CE or DCI. In some cases, the path loss RS parameters updated via MAC-CE or DCI may overwrite the previously RRC configured path loss RS parameters. In another example, if the path loss RS is not configured, then the path loss RS by default may be the spatial relation reference signal of the corresponding uplink beam.

Abstract: Certain aspects of the present disclosure provide techniques for channel state information (CSI) processing occupation determination that can be used even in multiple transmission reception point (mTRP) scenarios. A method that may be performed by a user equipment (UE) includes receiving a channel state information (CSI) reporting configuration configuring the UE with a plurality of CSI reference signal (CSI-RS) resources for channel measurement (CMRs). The method includes determining a number of occupied CSI processing units, a number of occupied active CSI resources, and/or a number of occupied active CSI-RS ports based on an actual number of CSI measurements. The method includes performing CSI measurement based on the determination.

Abstract: Disclosed are techniques for wireless communication. In an aspect, a vehicle communications system of a vehicle comprises a vehicle controller with a wireless communications interface capable of providing wireless coverage in a plurality of vehicle regions, and a set of relay devices that are each communicatively coupled to the vehicle controller and are each capable of providing wireless coverage in at least one of the plurality of vehicle regions. In a further aspect, the vehicle controller transitions between first and second modes of communication based in part upon a traffic condition.

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for dynamic updates to beam failure detection (BFD) reference signals (RSs) and path loss RS using medium access control-control element (MAC-CE) or downlink control information (DCI). For example, the quasi co-location (QCL) of periodic CSI-RS may be dynamically updated by the MAC-CE or DCI when the periodic CSI-RS is for BFD RS. Also, a semi-persistent CSI-RS or aperiodic CSI-RS may act as a BFD RS. An enhanced update procedure may be used to update the path loss RS dynamically using MAC-CE or DCI. In some cases, the path loss RS parameters updated via MAC-CE or DCI may overwrite the previously RRC configured path loss RS parameters. In another example, if the path loss RS is not configured, then the path loss RS by default may be the spatial relation reference signal of the corresponding uplink beam.

Abstract: Certain aspects of the present disclosure provide techniques for reducing inter-vehicle interference. In certain aspects, a method performed by a first vehicle may include detecting a second vehicle is in proximity of the first vehicle, determining that the second vehicle includes an intra-vehicle, obtaining resource allocation information associated with the intra-vehicle network of the second vehicle, the resource allocation information indicating a first set of resources allocated to one or more first sensors of the second vehicle located at least in a first portion of the second vehicle, determining that the first set of resources conflict with a second set of resources allocated to one or more first sensors of the first vehicle located in at least a first portion of the first vehicle, and performing one or more actions to resolve the determined conflict between the first set of resources and the second set of resources.

Abstract: A video stream scheduling unit may schedule resource allocations for each video frame of a plurality of video frames of video streams from a plurality of video sources based on a compressed frame type of the video frame, determine that a total frequency bandwidth of scheduled resource allocations for the frames concurrently due for transmission is greater than or equal to a threshold bandwidth, and receive the video streams from the plurality of video sources based on the scheduled resource allocations. The scheduling unit may delay or cancel a video frame with low priority or may instruct a video source to increase the compression rate of the video stream.

Abstract: Apparatus, methods, and computer-readable media for facilitating dual stage CSI selection for CSI feedback are disclosed herein. An example method of wireless communication at a UE includes, after detecting a CSI report triggering event, selecting a subset of CSI-RS resources from a set of CSI-RS resources configured for the UE by applying at least one of an RSRP threshold or an SINR threshold to each CSI-RS resource of the set of CSI-RS resources. The example method also includes selecting a CSI-RS resource from the subset of CSI-RS resources based on an efficiency metric associated with each of the CSI-RS resources of the subset of CSI-RS resources. The example method also includes transmitting a CSI report to a base station, the CSI report including a CQI associated with the selected CSI-RS and at least one of a PMI, an RI, or a wideband component of the PMI.

Abstract: Methods, systems, and devices for wireless communications are described that identify a minimum gap between a control channel transmission on a first component carrier (CC) that triggers a measurement report and an associated reference signal transmission on a second CC. The minimum gap may be based on a resource associated with a control channel transmission and a resource associated with the reference signal transmission. The first CC and the second CC have different numerologies and the minimum gap may be identified in terms of a number of OFDM symbols of the second CC that carries the reference signal transmission. The minimum gap also may be identified based on a location of the control channel transmission within a slot of the first CC. In cases where beam switching is used, the minimum gap may be further based at least in part on a beam switch time for performing the beam switching.

Abstract: Methods, systems, and devices for wireless communications are described that provide for channel-bandwidth-attributed per-band user equipment capability reporting. A user equipment (UE) may determine a first and second set of physical layer capabilities associated with a first and second channel bandwidth, respectively. The UE may transmit a first and second UE capability report to the base station, where the capability reports may indicate the corresponding channel bandwidth and may include the UE physical layer capabilities. The UE may receive control information indicating a channel bandwidth from the base station and the UE may communicate with the base station according to the received control information.

Abstract: A user equipment (UE) may utilize frequency domain (FD) compression for reporting channel state information (CSI) including a precoding matrix indicator (PMI). The UE may receive a CSI configuration specifying a first set of configured FD units to be reported. The UE may determine a first number of FD units based on the first set of configured FD units. The UE may select a second number of FD units that is greater than or equal to the first number of FD units. The UE may calculate, for one or more layers, a PMI for a second set of FD units including a number of FD units equal to the second number of FD units. The UE may allocate, according to a mapping rule, a number of PMIs for the first set of FD units to a subset of the PMIs for the second set of FD units.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may utilize synchronization signal block (SSB) and channel state information reference signal (CSI-RS) based beam management to select beams for communicating with a base station. For example, a UE may receive, from a base station, control signaling that configures the UE to monitor a set of SSBs and a set of reference signals. The UE may select a subset of the set of SSBs based on measuring a first signal metric for each SSB of the set of SSBs. In some examples, the UE may select a reference signal subset of the set of reference signals that correspond to the subset of the set SSBs, and may communicate a data transmission with the base station using a first beam selected based on measuring a second signal metric for each reference signal in the reference signal subset.

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 channel state information reference signal that includes a plurality of resource blocks. The UE may sub-sample one or more portions of the plurality of resource blocks prior to performing one or more channel state feedback computations. Accordingly, the UE may perform the one or more channel state feedback computations based at least in part on the one or more sub-sampled portions of the plurality of resource blocks and transmit, to the base station, a channel state feedback report based at least in part on the one or more channel state feedback computations that are performed using the one or more sub-sampled portions of the plurality of resource blocks. Numerous other aspects are provided.

Abstract: Wireless devices are adapted to facilitate beamforming communications in wireless networks. A wireless device may identify a first beam group with a number of beams equal to a maximum number of allowed beams, and a second beam group with a number of beams less than the maximum number of allowed beams. Channel statistics may be estimated for each of the first beam group and the second beam group, and the second beam group may be selected for communications when the second beam group is determined to have at least substantially equal or greater channel statistics compared to the first beam group. Other aspects, embodiments, and features are also included.

Abstract: Disclosed are techniques for wireless communication. In an aspect, a vehicle communications system of a vehicle comprises a vehicle controller with a wireless communications interface capable of providing wireless coverage in a plurality of vehicle regions, and a set of relay devices that are each communicatively coupled to the vehicle controller and are each capable of providing wireless coverage in at least one of the plurality of vehicle regions. In a further aspect, the vehicle controller transitions between first and second modes of communication based in part upon a traffic condition.