Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may dynamically select subsets of antenna elements within an array based on power consumption and link performance and/or a configuration of components at the wireless device. For example, a wireless device may identify an antenna array having multiple antenna elements, and the wireless device may select respective subsets of antenna elements (e.g., subarrays) for uplink and downlink transmissions. In such cases, the selection may be based on a tradeoff of power consumption at the device and link performance. Additionally or alternatively, the selection may be based on a configuration and/or constraints on a number of radio frequency (RF) components of the wireless device. The wireless device may communicate based on the dynamic selection of different subsets of antenna elements of an array for uplink and downlink communications.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a measurement report indicating a plurality of candidate beam pairs for multiple-input multiple-output (MIMO) communication with a network node, wherein the plurality of candidate beam pairs includes a first beam pair and a second beam pair, wherein each beam of the plurality of candidate beam pairs has a spatial characteristic and a polarization characteristic. The UE may receive a MIMO configuration for the first beam pair and the second beam pair, wherein a beam of the second beam pair is outside a beam avoidance region, wherein the beam avoidance region is defined based at least in part on the spatial characteristic of a beam of the first beam pair. 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 transmit, to a network node, a polarization performance loss indication that is indicative of a loss in polarization performance based on transitioning from a first operating state associated with a first frequency range to a second operating state associated with a second frequency range, wherein the first operating state corresponds to a first antenna configuration and the second operating state corresponds to a second antenna configuration, wherein the first antenna configuration corresponds to a first antenna orientation and the second antenna configuration corresponds to a second antenna orientation. The UE may receive, from the network node, configuration information indicative of at least one communication parameter associated with the at least one antenna array and based on the polarization performance loss indication. 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 determine a set of bandwidth part (BWP) combinations for an inter-band carrier aggregation configuration in a frequency range above 24 GHz. The UE may transmit an indication of the set of BWP combinations to initiate a reconfiguration of a BWP combination for the UE. Numerous other aspects are provided.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless node may transmit, to another wireless node, information related to one or more properties of a first antenna array associated with the wireless node. The wireless node may receive, from the other wireless node, information related to one or more properties of a second antenna array associated with the other wireless node. The wireless node may communicate with the other wireless node over a wireless link using one or more beams associated with an operating frequency, wherein the operating frequency is based at least in part on the one or more properties of the first antenna array and the one or more properties of the second antenna array. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may receive control signaling indicating a channel state information reference signal-resource indicator (CRI) for beam reporting, and receive a set of channel state information reference signals (CSI-RSs) in accordance with the CRI. The first wireless device may transmit a beam report indicating a first and second beamforming configurations associated with the CRI, where the first beamforming configuration is associated with an antenna module at the first wireless device, and where the second beamforming configuration is associated with the antenna module and one or more passive devices configured to reflect signal energy to or from the antenna module. The first wireless device may then communicate one or more messages with the second wireless device in accordance with the first beamforming configuration, the second beamforming configuration, or both.

Abstract: Methods, systems, and devices for wireless communication are described. A communication device may receive control signaling indicating a configuration for reporting a set of beam angle measurement values between at least two beams relative to a respective beam of a set of beams and a phase difference measurement value between post-beamformed channel phases using the at least two beams of the set of beams. In some examples, the communication device may determine a set of reference signal received power (RSRP) measurement values associated with the at least two beams of the set of beams. The communication device may transmit a report including the set of beam angle measurement values and the phase difference measurement value based on receiving the control signaling indicating the configuration. For example, the communication device may report the RSRP measurement values associated with the at least two beams of the set of beams.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first signal from a base station indicating a set of available control channel monitoring sets to be used for control information. The UE may receive, over a default control channel monitoring set of the available control channel monitoring sets configured for the UE, a second signal from the base station activating at least one additional control channel monitoring set from the set of available control channel monitoring sets, the default control channel monitoring set comprising a subset of the set of available control channel monitoring sets. The UE may receive control information over the default control channel monitoring set and the at least one additional control channel monitoring set at least partially in response to receiving the second signal.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a capability message that indicates an antenna module configuration, the antenna module configuration indicating an antenna module format of the UE. The UE may perform a beam management procedure according to a beam management mode associated with a frequency range and corresponding to the antenna module format and may receive, based on the beam management procedure, an indication of a set of parameters for communications using the frequency range. The UE may communicate, based on the set of parameters, one or more messages using the frequency range and one or more antenna modules. Additionally, or alternatively, the UE may receive an indication of a resource allocation for a beam weighting procedure, the resource allocation corresponding to the antenna module format of the UE and may perform the beam weighting procedure using the resource allocation.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a restriction on a combination of frequency components permitted to be used by the UE for carrier aggregation or frequency hopping, wherein the restriction indicates at least two frequency components that are not permitted to be combined for carrier aggregation or frequency hopping. The UE may communicate based at least in part on the restriction. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may transmit, to a second wireless device, capability control signaling indicating a first quantity of beam switches is supported within a first time period for a first antenna subarray, a first antenna module, or both, of the first wireless device. The first wireless device may receive from the second wireless device in accordance with the capability control signaling, a grant scheduling one or more messages and indicating a set of beams of the first wireless device over which to communicate the one or more messages in respective transmission time intervals (TTIs) of the first time period. The first wireless device may then transmit or receive, over the first time period using the first antenna subarray, the first antenna module, or both, the one or more messages using the set of beams.

Abstract: Method and apparatus for sharing dynamic capability levels of calibration to other devices in a network. The apparatus transmits, to a second UE, a first calibration capability message indicating a first set of one or more levels of calibration capabilities. The apparatus performs an online calibration procedure with the second UE based at least on the first calibration capability message indicating the first set of one or more levels of the calibration capabilities. The apparatus may receive, from the second UE, a second calibration capability message associated with the second UE indicating a second set of one or more levels of the calibration capabilities for the second UE. The apparatus may transmit a beamforming loss indication indicating a loss in beamforming array gain with use of an uncalibrated amplitude or phase settings corresponding to at least one of an operating frequency, a temperature level, or a gain stage level.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiving device may receive an indication of at least one factor associated with an antenna array thinning operation at a transmitting device. Accordingly, the receiving device may adjust at least one reception parameter at the receiving device based at least in part on the at least one factor. Similarly, a transmitting device may transmit an indication of at least one factor associated with antenna array thinning operation. Accordingly, the transmitting device may perform the antenna array thinning operation based at least in part on the at least one factor. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communication are described. In some systems, a user equipment (UE) may receive a control message indicating a reference signal configuration for beam calibration by the UE based on a beamforming characterization status. The UE may receive a set of beam calibration reference signals based on the reference signal configuration. The UE may measure the set of beam calibration reference signals and generate a set of beamforming weights for use in communications by the UE based on the measuring and the beamforming characterization status. In some cases, the UE may transmit or forward a beamforming codebook based on the beamforming weights to a network entity. The network entity or the UE may forward the beamforming codebook to other UEs of a same design class as the UE.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiving device may receive an indication of at least one factor associated with an antenna array thinning operation at a transmitting device. Accordingly, the receiving device may adjust at least one reception parameter at the receiving device based at least in part on the at least one factor. Similarly, a transmitting device may transmit an indication of at least one factor associated with antenna array thinning operation. Accordingly, the transmitting device may perform the antenna array thinning operation based at least in part on the at least one factor. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. To support a reliable array response for wideband communications, a base station may configure a set of transmission instances for a set of signals distributed across a wideband carrier bandwidth. At least one transmission instance of the set of transmission instances may be configured in each sub-band of the carrier bandwidth. The base station may transmit the set of signals in the configured transmission instances to a user equipment (UE). The UE may receive the set of signals distributed across the carrier bandwidth and may measure, for the signals, a set of signal measurements corresponding to the set of sub-bands. Based on the signal measurements, the UE may determine a set of communication beams for the set of sub-bands. Using one or more of the determined communication beams, the UE may communicate with the base station in the carrier bandwidth.

Abstract: Disclosed are techniques for wireless communication. In an aspect, a network node receives first perception information from at least one user equipment (UE), and transmits first perception-assistance information to the at least one UE, the first perception-assistance information determined based at least in part on the first perception information.

Abstract: Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) determines that a perception-based approach to adaptive beam weight learning would provide improved performance of wireless communication with a base station over a wireless communication medium relative to non-perception-based approaches to adaptive beam weight learning, and transmits, to a network node, an indication for the base station to perform perception-based adaptive beam weight learning procedures for the wireless communication with the base station over the wireless communication medium.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may indicate timing alignment factors in support of timing alignment adjustments by a base station or one or more transmission reception points (TRPs). Such timing adjustments may be in the context of cooperative beamforming and may relate to the timing with which the TRPs transmit respective instances of downlink transmissions to the UE. In some cases, the UE may report absolute timing alignment factors to support such timing alignment adjustments. Additionally or alternatively, the UE may report relative timing alignment factors, for example compared to signals received from a reference TRP, to support such timing alignment adjustments.

Abstract: This disclosure provides systems, methods and apparatuses for a selection of one or more transmission and reception points (TRPs) within a multi-TRP system. In one aspect, a user equipment (UE) may transmit an indication of the selected TRPs and an indication of one or more beams that the selected TRPs may use to communicate with the UE based on a mismatch between a default operating frequency (DOF) of each TRP within the multi-TRP system and a DOF of the UE. For example, the UE may receive an indication of a DOF of each antenna port of the TRPs within the multi-TRP system and the UE may compare the indicated DOFs with a DOF of each antenna module of the UE. The UE may select to communicate with TRPs and select one or more ports that the selected TRPs may use to communicate with the UE based on the comparison.