Abstract: Some disclosed methods involve controlling an apparatus that includes an ultrasonic receiver system. Some such methods involve receiving ultrasonic sensor data from the ultrasonic receiver system and detecting, based at least in part on the ultrasonic sensor data, one or more imperfections in, on or proximate an adhesive ultrasonic coupling layer on an outer surface of the apparatus. Some such methods involve controlling a user interface system to provide a prompt to adjust or replace the adhesive ultrasonic coupling layer responsive to detecting the one or more imperfections in, on or proximate the adhesive ultrasonic coupling layer.

Abstract: Certain aspects of the present disclosure provide techniques for inter-user equipment (UE) coordination. A method, performed by a second UE, includes transmitting, to a first UE, a request for inter-UE coordination information, receiving a first indication from the first UE indicating a first set of resources for one or more transmissions by the second UE based on the request for inter-UE coordination information, and transmitting, based on the received first indication of the first set of resources, the one or more transmissions using a second set of resources.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may transmit, to a reconfigurable intelligent surface (RIS) controller associated with an RIS, a configuration for applying an RIS pattern. The network node may receive, from a network element, a measurement report indicating received observations of pilot signals reflected by the RIS in accordance with the RIS pattern. The network node may transmit, to the RIS controller and based at least in part on the measurement report, an indication of one or more of an updated codebook or a phase drift associated with a calibration of the RIS. Numerous other aspects are described.

Abstract: Aspects described herein relate to transmitting, for a receiving node, a multi-port reference signal (RS) with no restriction on wideband digital precoding, and transmitting, for the receiving node, an indication of an analog precoder used for transmitting the multi-port RS. Other aspects relate to receiving the multi-port RS and indication of analog precoder.

Abstract: Methods, systems, and devices for wireless communications are described. A network node may determine channel state information (CSI) for a link with an energy harvesting (EH)-capable device based on measurements of backscattered signals reflected from the EH-capable device. The network node may include multiple antennas and may indicate, to the EH-capable device, a frequency shift to be applied by the EH-capable device to backscattering. The network node may transmit reference signals from each antenna of the network node. The EH-capable device may backscatter the received reference signals in accordance with the indicated frequency shift, and the network node may measure the frequency-shifted backscattered responses to the reference signals to determine CSI between the different antennas and the EH-capable device.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may obtain a machine learning (ML) model trained to provide one or more predicted channel interference (CI) indicators informative of channel interference between cells of a cellular network. The network node may calculate, using the ML model, the one or more predicted CI indicators using data characterizing a given cell and one or more neighbor cells of the given cell. The network node may provide the one or more predicted CI indicators. Numerous other aspects are described.

Abstract: Wireless communications systems and methods related to wireless communications are provided. A first wireless communication device may communicate with a second wireless communication device, a first power mode configuration including a first transmit power parameter and a first communication signal based on the first power mode configuration. The first wireless communication device may communicate with a second wireless communication device, a second power mode configuration including a second transmit power parameter different from the first transmit power parameter and a second communication signal based on the second power mode configuration.

Abstract: Disclosed are systems, methods, and non-transitory media for improving user equipment (UE) positioning. In some aspects, UE positioning improvements are facilitated by a location server, such as a Location Management Function (LMF) that receives location measurements from the UE and transmits back a feedback messaging, that can be used to modify transmission of subsequent location measurements to the location server.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured with a plurality of resources corresponding to a plurality of antenna elements of the network entity. The UE may measure signaling received via the antenna elements and over the resources to estimate a wireless channel for the plurality of antenna elements of the network entity. In some examples, the UE may determine the per-element wireless channel using the received signal and may report the per-element wireless channel. Additionally, after acquiring the per-element wireless channel, the UE may use joint optimization to calculate analog beams and corresponding digital beams for each antenna element of the network entity. For example, the UE may calculate an analog precoding matrix and a digital precoding matrix. The UE may transmit a report indicating the analog precoding matrix, the digital precoding matrix, channel quality information, or any combination thereof.

Abstract: Disclosed are techniques for integrated sensing and communication (ISAC). In some aspects, a network node may receive, from a road side unit (RSU), a plurality of basic safety messages (BSMs) transmitted by a plurality of vehicles. The network node may receive, from a first vehicle of the plurality of vehicles, a scheduling request to perform one or more sensing operations, one or more communication operations, or a combination of the one or more sensing operations and the one or more communication operations. The network node may transmit, to the first vehicle, a first configuration to perform the one or more sensing operations, the one or more communication operations, or the combination based on the plurality of BSMs and one or more scheduling requests from one or more other vehicles of the plurality of vehicles.

Abstract: Some examples of the techniques described herein may provide schemes to organize shaped payload bits, non-shaped payload bits, and parity bits to allow an increased quantity of bits to be shaped for enhanced performance. Interleaving may be utilized in some aspects to enhance robustness to burst errors. For instance, interleaving schemes for enhancing bit orderings and interleaving are provided. In some approaches, permutation and row-column interleaving may be performed with a quantity of rows. Some approaches may utilize circular rotation and row-column interleaving with a quantity of rows. In some examples, permutation with alphabet-based row-column interleaving with fixed rows may be performed. Some aspects may include permutation and row-column interleaving with a quantity of rows when punctured columns are shaped. In some approaches for modulation mapping, each set of bits may be mapped to a quadrature amplitude modulation (QAM) symbol.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may receive a transmission associated with one or more bits. The wireless communication device may decode the transmission using an average of one or more confidence level values, associated with the one or more bits, over a quantity of the one or more confidence level values and an offset that is based at least in part on the quantity of the one or more confidence level values. Numerous other aspects are described.

Abstract: Apparatuses and methods for cell DRX impact reference signals for positioning and sensing are described. An apparatus is configured to receive, from a network entity, an UL reference signal configuration indication. The UL reference signal configuration associates a UL reference signal transmission occasions set with active/inactive DRX modes of a cell(s) associated with a UE. The apparatus is configured to provide, for a TRP(s) associated with the cell(s), and at the set of UL reference signal transmission occasions, an UL reference signal(s) during a portion of the active DRX mode based on the UL reference signal configuration. Another apparatus is configured to configure, for a UE, an UL reference signal configuration that associates UL reference signal transmission occasions with active/inactive DRX modes of a cell(s) associated with the UE. The apparatus is configured to provide, for the UE, the UL reference signal configuration.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter device may modulate a first set of bits into a first modulation symbol, selected from a first set of modulation points. The transmitter device may modulate a second set of bits into a second modulation symbol, selected from a second set of modulation points, where the first set of modulation points are a subset of the second set of modulation points. The transmitter device may transmit the first modulation symbol and the second modulation symbol to a receiver device. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may include an L shaped antenna module, which may include a first array of antenna elements in one dimension and a second array of antenna elements in a second dimension. In an L shaped antenna module, antenna element configurations may be used that combine antenna elements across the two sides of the “L”. In some aspects, a UE may dynamically select a configuration of antenna elements of an L shaped antenna module to enhance performance and power consumption. In some aspects, the UE may select whether to use a cross-polarization configuration or a co-polar configuration for the L shaped antenna module.

Abstract: Aspects disclosed herein include a die interconnect structure with embedded inductor(s) including coupled coils formed in redistribution layer (RDL) and adjacent bump-level distribution layer (BDL) for improved Q factor. The die interconnect structure includes a metal pad and a first coil formed in the RDL. The die interconnect structure also includes the BDL which includes a secondary metal pad and a second coil. The die interconnect structure also includes a seed layer between the first coil and the second coil. The die interconnect structure includes an inductor comprising the first coil, the second coil, and a via coupling the first and second coils. In this manner, the additional second coil formed in the BDL has higher conductance, less resistance than a coil formed in metallization layers within the die and, thus, advantageously improving the Q factor of the inductor.

Abstract: A method of calibrating a first threshold voltage of a first pulse amplitude modulation (PAM) slicer and a second threshold voltage of a second PAM slicer. The method includes: calibrating the first threshold voltage of the first PAM slicer based on a non-return-to-zero (NRZ) signal and a PAM signal; and calibrating the second threshold voltage of the second PAM slicer based on the PAM signal and the calibrated first threshold voltage.

Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for techniques for signaling control information in wireless communication systems based on orbital angular momentum (OAM) modes. One aspect provides a method for wireless communication by a transmitter. The method generally includes transmitting to a receiver, with a first orbital angular momentum (OAM) mode, a first control channel on a first time-frequency resource and transmitting to the receiver, with a second OAM mode, at least one of a data channel or a second control channel on a second time-frequency resource that at least partially overlap with the first time-frequency resource in at least one of time or frequency.

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques at a network provide for efficiently considering parameters of a network slice when determining whether to provide access to the network slice, allow the establishment of a session via the network slice, or grant access to resources for communications via the network slice. Further, the described techniques at a user equipment (UE) provide for efficiently determining when or whether to retry to access a network slice, retry to establish a session via the network slice, or retry to access resources for communicating via the network slice.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a primary cell (PCell), a radio resource control (RRC) message that indicates an inter-cell mobility cell set and a measurement configuration. The UE may transmit, to the PCell, a measurement report that indicates one or more measurements of one or more cells indicated in the inter-cell mobility cell set, wherein the one or more measurements are derived based at least in part on the measurement configuration. The UE may receive, from the PCell, a joint cell activation and timing advance command medium access control control element (MAC-CE), wherein the joint cell activation and timing advance command MAC-CE indicates an activation of a new cell, of the one or more cells, and timing advance information associated with the new cell. Numerous other aspects are described.