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: Methods, systems, and devices for wireless communications are described. In some examples, a wireless communications system may support group channel quality indicator (CQI) reporting. For example, a user equipment (UE) may receive, from a base station, signaling indicating a group of component carriers (CCs) and one or more subbands within the group of CCs. The UE may receive one or more reference signals within the one or more subbands and determine a group CQI index corresponding to the group of CCs based at least in part on the one or more reference signals. The UE may then transmit a report to the base station indicating the group CQI index and the base station may determine a CQI index for each of the one or more subbands based on the group CQI index.

Abstract: Methods, systems, and devices for wireless communications are described. The method includes receiving a transmission parameter of a second wireless network, scanning, based on the transmission parameter, for transmission activity of the second wireless network using a set of beams generated in accordance with a beamforming codebook, and opportunistically communicating with a second wireless device of the first wireless network using the beamforming codebook based on the scanning.

Abstract: Methods, systems, and devices for wireless communication are described. A network device, such as a base station, may transmit a request message to a user equipment (UE). The request message may include a request for the UE to transmit a set of sounding reference signals (SRSs). The set of SRSs may include two (or more) beamformed signals. The network device may receive the set of SRSs according to the request message. The network device may identify, based on a co-phasing parameter associated with the two (or more) beamformed signals, an antenna port precoder configuration to use for communicating with the UE.

Abstract: A base station may perform online calibration of antenna elements at two or more transmission reception points (TRPs) based on measurements by one or more user equipment (UEs). The base station may transmit a request for the one or more UEs to perform antenna calibration measurements, for the two or more TRPs, during measurement gaps. The base station may coordinate, among the two or more TRPs, transmission of reference signals during the measurement gaps. The base station may receive a report based on the antenna calibration measurements from the one or more UEs. The base station may calibrate one or more antenna elements of the two or more TRPs based on the antenna calibration measurements.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless node may receive, from a control node or a second wireless node, an indication of an assisting node to be used to establish a communication connection between the first wireless node and the second wireless node, the indication including identifying information associated with the assisting node. The first wireless node may establish the communication connection with the second wireless node using the assisting node. Numerous other aspects are described.

Abstract: Techniques are provided for enabling user equipment (UE) positioning based on angle estimation in millimeter wave (mmW) bands. An example method for determining a location of a mobile device includes transmitting array gain information to a network entity, the array gain information including beam pattern information based at least in part on a sub-band and a state of the mobile device, receiving one or more reference signals in one or more sub-bands, wherein a receive beam for each of the one or more reference signals is based at least in part on the sub-band the one or more reference signals are being received in, and on a current state of the mobile device, determining measurement values based on the one or more reference signals, and determining the location of the mobile device based at least in part on the measurement values.

Abstract: Methods, systems, and devices for wireless communications that support coordinated beamforming in millimeter wave (mmW) systems. A user equipment (UE) may indicate a number of supported antennas for signal reception. A plurality of transmission-reception points (TRxPs) may coordinate a beam training with the supported antennas, in determining a beam estimation for coordinated reception at the UE. The coordinated beam training may be carried over combined beams of the associated TRxPs, and may be based on co-phasing factors within a single antenna panel for each of the TRxPs. Based on the coordinated beam training, the UE may determine a matched filtering beam estimate for reception and receive coordinated beamformed transmissions from the plurality of TRxPs as part of coordinated multipoint (CoMP) transmissions.

Abstract: Methods, systems, and devices for wireless communications are described. In some cases, a first user equipment (UE) within a coverage area of a base station may determine a power control configuration. The first UE may transmit an indication of the power control configuration to a second UE, which may adjust one or more power control parameters based on the indication. The one or more power control parameters may include a target received power, a compensation factor, a downlink path loss between the base station and the first UE, or a combination thereof. The second UE may use the adjusted one or more power control parameters to determine a transmit power and may transmit a message to the first UE with the determined transmit power. In some cases, the second UE may be outside of the coverage area of the base station.

Abstract: A network device is provided that uses power measurements to measure a relative phase between a received signal from a reference antenna in a plurality of antennas and a received signal from each antenna in the plurality of antennas except the reference antenna. The network device may use a direct phase measurement to measure the phase of other received signals from additional antennas.

Abstract: Systems, methods, and devices for wireless communication that support mechanisms for signaling metrics associated with antenna modules of a UE in a wireless communication system. A user equipment (UE) determines one or more metrics associated with at least one antenna module of the UE. The UE transmits a message including the one or more metrics associated with at least one antenna module of the UE (e.g., to a base station or to another sidelink UE). In certain aspects, the message including the one or more metrics is transmitted to the base station during an initial establishment of a communication session between the UE and the base station. In some aspects, the UE transmits the message including the one or more metrics as a broadcast message, in a radio resource control (RRC) message, and/or in a medium access control (MAC)-control element (CE) message.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may monitor a wake-up signal (WUS) occasion based at least in part on a discontinuous reception cycle activation duration timer; and receive a reference signal (RS) during the WUS occasion, wherein the RS is to facilitate a UE-assisted calibration of at least one antenna element on at least one panel associated with a base station or a base station-assisted calibration of at least one antenna element on at least one panel associated with the UE. Numerous other aspects are provided.

Abstract: Certain aspects of the present disclosure provide techniques for communicating information associated with one or more phase shift parameters for a beamforming circuit, wherein the beamforming circuit includes a Butler matrix having one or more sets of configurable phase shifters; and communicating in accordance with the one or more phase shift parameters. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communications are described. Some wireless communications systems may support dynamic beamforming and beam reporting. In some cases, a base station may transmit an indication to a user equipment (UE) that a channel state information reference signal (CSI-RS) resource indicator (CRI) used to report a selected beam is associated with two or more beams. The UE may then monitor a downlink burst from the bases station, the downlink burst having one or more CSI-RSs for measurement by the UE in accordance with the CRI. Based on performing measurements on the CSI-RSs, the UE may generate and transmit one or more CSI reports to the base station, and the UE may receive a downlink transmission from the base station over a weighted combination of the two or more beams.

Abstract: Methods, systems, and devices for wireless communications are described. One method may include a UE determining a priority of a UE quality of service over UE thermal efficiency constraints, generating a priority indicator based at least in part on the determined UE quality of service priority, and transmitting to a base station via physical layer signaling, the priority indicator. Another method may include a UE determining a priority of a UE quality of service over UE energy constraints, generating a priority indicator based at least in part on the determined UE quality of service priority, and transmitting to a base station via physical layer signaling, the priority indicator. Yet another method may include a base station receiving a UE priority indicator specifying a UE quality of service priority over thermal efficiency constraints and temporarily prioritizing the UE QoS over UE thermal efficiency constraints based on the received priority indicator.

Abstract: Methods, systems, and devices for wireless communications are described. In some examples, a wireless communications system may support group channel quality indicator (CQI) reporting. For example, a user equipment (UE) may receive, from a base station, signaling indicating a group of component carriers (CCs) and one or more subbands within the group of CCs. The UE may receive one or more reference signals within the one or more subbands and determine a group CQI index corresponding to the group of CCs based at least in part on the one or more reference signals. The UE may then transmit a report to the base station indicating the group CQI index and the base station may determine a CQI index for each of the one or more subbands based on the group CQI index.

Abstract: Methods, systems, and devices for wireless communications are described. Generally, a user equipment (UE) may transmit an indication to a base station that a total received power for the UE exceeds an overload threshold. In some cases, the indication may be an explicit request for a decrease in transmit power by a specific amount of reduction. The UE may transmit indications that the overload threshold is exceeded to multiple transmit/receive points. The indications may request specific transmit power reduction amounts that are specific to the TRPs, or may be generic indications that the overload threshold is exceeded, and the TRPs may coordinate to reduce their respective transmit powers to satisfy the overload threshold at the UE. The base station may allocate a first set of resources for near field UEs and a second set of resources for far field UEs.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless communication device may receive, from a second wireless communication device, beam type information associated with at least one beam used by the second wireless communication device for a hierarchical beamforming process, wherein the beam type information includes an indication of a number of beam types used in the hierarchical beamforming process and an indication of a number of beams of each of the beam types used in the hierarchical beamforming process. The first wireless communication device may perform a wireless communication action based at least in part on the beam type information. Numerous other aspects are described.

Abstract: Certain aspects of the present disclosure provide techniques for interference mitigation. An exemplary method performed by a base station generally includes determining, based on a location of another base station and information regarding the other base station, that the other base station is likely to experience interference while receiving an uplink transmission due to a downlink transmission by the base station and forming a null in a beam of the downlink transmission in a direction matching the location of the other base station.

Abstract: The present disclosure provides for beam selection by a mobile device based on a sensor state of the mobile in order to mitigate hand blockage. The mobile device detects, during operation of the mobile device, a sensor state caused by a hand of an operator on the mobile device. The mobile device selects for communication, while operating in the sensor state, a refined beam set corresponding to the sensor state based on reference signals. The mobile device trains a machine learning model based on a set of training data including pairs of the sensor state and the refined beam set to select a first set of beam weights from a second set of beam weights based on a detected sensor state. The mobile device selects for communication a hand blockage state including the first set of beam weights for a current detected sensor state based on the machine learning model.