Abstract: Certain aspects of the present disclosure provide techniques for determining transport block sizes for sidelink communications. In one example, a method for wireless communications by a user equipment includes determining, based on an initial allocation of physical resource blocks (PRBs) in one or more sub-channels that are non-overlapping with a guard band within a resource pool for a sidelink communication, that an occupied channel bandwidth (OCB) threshold is not met for the sidelink communication; allocating one or more additional PRBs from the resource pool to the sidelink communication in order to meet the OCB threshold, wherein the one or more additional PRBs comprise at least one of: all partial sub-channel PRBs in a sub-channel of the resource pool partially overlapped by the guard band; or all boundary PRBs within the resource pool, but not allocated to a sub-channel of the resource pool.

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may generate a set of shaping bits based on performing a constellation shaping operation on a set of information bits. Further, the wireless device may perform a first error correction encoding operation based on the set of shaping bits and a second error correction encoding operation based on the set of information bits to generate a first set of coded bits and a second set of coded bits, respectively. Moreover, the wireless device may transmit a control message that indicates an offset that identifies a first resource mapping for the first set of coded bits and a second resource mapping for the second set of coded bits and transmit the first set of coded bits in accordance with the first resource mapping and the second set of coded bits in accordance with the second resource mapping.

Abstract: Certain aspects of the present disclosure provide techniques for scheduling and relaying enhancements for new radio (NR) downlink-based backscatter communications. An example method includes receiving control information from a network entity, the control information including: scheduling information for one or more data channel transmissions and configuration information for one or more backscatter transmissions, by a second wireless communication device, corresponding to the one or more data channel transmissions. The method also includes receiving the one or more data channel transmissions from the network entity based on the scheduling information and receiving the one or more backscatter transmissions from the second wireless communication device.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an interlace configuration for a sidelink resource pool. The UE may transmit a physical sidelink control channel (PSCCH) communication scheduling a physical sidelink shared channel (PSSCH) communication for transmission in the sidelink resource pool, wherein the PSCCH communication is mapped to a set of resources based on a mapping rule in accordance with the interlace configuration. Numerous other aspects are described.

Abstract: A method for wireless communication includes receiving, from a first network node of a group of network nodes, a first message configuring a group of channel state information (CSI) reference signals (RSS) (CSI-RSs). Each CSI-RS may be associated with a reconfigurable intelligent surface (RIS)-based channel of a group of RIS-based channels, where each RIS-based channel may be associated with a respective communication link between a respective network node and the UE via a RIS. The method also includes receiving, from each network node, via the RIS, the respective CSI-RS. The method further includes estimating, for each RIS-based channel, one or more respective channel conditions in accordance with measuring the respective CSI-RS of the group of CSI-RS. The method also includes transmitting, to the first network node, a second message indicating a RIS allocation ratio associated with the estimated one or more respective channel conditions associated with each RIS-based channel.

Abstract: Disclosed are techniques for communication. In an aspect, a reference device (e.g., gNB or BS) and a BS obtain a configuration of a TDOA procedure including respective PRSs to be transmitted by the reference device and the BS. In an aspect, the reference device and the BS each mute their own transmission while the other device is transmitting its respective PRS. Other aspects are directed to DL-TDOA, UL-TDOA and elliptical positioning techniques.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a wireless communication device, an aggregated signal including a plurality of frequency division multiplexed (FDM) signals corresponding to a plurality of beams, each of the plurality of signals comprising a discrete Fourier transform (DFT)—spread-orthogonal frequency division multiplexing (DFT-s-OFDM) waveform associated with a unique pre-DFT-spreading sequence of a plurality of pre-DFT-spreading sequences. The UE may decode the plurality of FDM signals based at least in part on the plurality of pre-DFT-spreading sequences. Numerous other aspects are described.

Abstract: The apparatus of wireless communication includes a UE and a base station. The base station may transmit, to the UE, a configuration for a plurality of PDCCH monitoring groups for monitoring different sets of search spaces. The plurality of PDCCH monitoring groups may include a first PDCCH monitoring group with a first number of PDCCH monitoring occasions and a second PDCCH monitoring group with a second number of PDCCH monitoring occasions different from the first number. The base station may determine which PDCCH monitoring group to send a PHCCH, and transmit the PDCCH to the UE. The UE may determine to monitor search spaces of the PDCCH monitoring group, and monitor search spaces corresponding to the PDCCH monitoring group. The UE may switch between the first and second PDCCH monitoring groups based on a condition or an indication from the base station.

Abstract: Disclosed are techniques for radio frequency (RF) sensing. In an aspect, a network entity (e.g., base station or road-side unit) may perform RF sensing in a first mode for sensing a horizontal angle using horizontal multiple input, multiple output (MIMO) radar with vertical beamforming, in which a two-dimensional MIMO antenna array is configured into a plurality of vertical columns, each column comprising a plurality of antenna elements configured to transmit as a phased array, each column transmitting a different orthogonal signal from the other columns. The network entity may perform RF sensing in a second mode for sensing a vertical angle using vertical MIMO radar with horizontal beamforming, in which the MIMO antenna array is configured into a plurality of horizontal rows, each row comprising a plurality of antenna elements configured to transmit as a phased array, each row transmitting a different orthogonal signal from the other rows.

Abstract: Disclosed are techniques for communication. In an aspect, a position estimation entity determines a sidelink positioning reference signal (SL-PRS) resource configuration associated with a positioning measurement procedure. The position estimation entity transmits an indication of the SL-PRS resource configuration (e.g., to first and/or second UEs). The UE(s) obtain the SL-PRS resource configuration, and perform the positioning measurement procedure in accordance with the SL-PRS resource configuration.

Abstract: Certain aspects of the present disclosure provide a method of wireless communications by a user equipment (UE), generally including receiving signaling, from a network entity, indicating at least a first channel state information (CSI) reference signal (CSI-RS) pattern indicating CSI-RS resources, wherein the first CSI-RS pattern indicates a lower density of CSI-RS resources in a channel frequency range, than a second CSI-RS pattern; updating a machine learning (ML) model based on the first CSI-RS pattern; generating, using the updated ML model, CSI for the channel frequency range based on measurements taken by the UE according to the first CSI-RS pattern; and transmitting a report to the network entity indicating the CSI for the channel frequency range.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may receive, from a second UE via a sidelink, channel occupancy time (COT) sharing information (COT-SI) associated with a first portion of a COT. The UE may identify, based at least in part on the COT-SI, that the first UE is an eligible repeater UE of the COT-SI. The UE may transmit, based at least in part on the first UE being the eligible repeater UE of the COT-SI, a communication using the first portion of the COT, the communication including a repeated COT-SI. Numerous other aspects are described.

Abstract: Aspects presented herein may improve the performance of ISAC systems by enabling a receiving entity to constrain its Rx beam sweeping in certain beam direction(s) and/or gain(s) during bi-static/multi-static RF sensing. In one aspect, an apparatus configures the receiving entity to perform Rx beam sweeping constrained based on at least one of a Tx beam direction, a Tx power, a Tx beam gain, or a Tx beam pathloss of Tx beams from a transmitting entity or based on a predicted position of a target. The apparatus performs the Rx beam sweeping in at least one of a set of Rx beam directions or a set of Rx beam gains constrained by the at least one of the Tx beam direction, the Tx power, the Tx beam gain, or the Tx beam pathloss of the Tx beams from the transmitting entity or constrained by the predicted position of the target.

Abstract: Certain aspects of the present disclosure provide a method for wireless communications at a network entity, generally including transmitting signaling configuring at least one reconfigurable intelligent surface (RIS) with a time-domain rotation factor to apply time variant reflection coefficient rotation, wherein the time-domain rotation factor is based on a Doppler frequency corresponding to a reflection link between the network entity and a user equipment (UE) via the at least one RIS and communicating with the UE, via the RIS, after transmitting the signaling.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may map a physical sidelink shared channel (PSSCH) transmission to a carrier of a shared radio frequency spectrum band for performing wideband operations, the carrier including a quantity of listen-before-talk (LBT) sub-bands, where the wideband operations are associated with sidelink communications using bandwidth that exceeds a threshold bandwidth. The UE may perform respective LBT procedures for the quantity of LBT sub-bands, and may determine whether to transmit a portion of the PSSCH transmission via a subset of the LBT sub-bands based on at least one LBT procedure of the respective LBT procedures failing.

Abstract: A configuration for transmission control for multi-relay based communication. The apparatus determines a priority of data transmission at each relay of a plurality of relays between the base station and at least one UE. The apparatus transmits a PDSCH comprising control information for the at least one UE and a priority indication instructing each relay of the plurality of relays which data is contained in the PDSCH. The PDSCH may include an indication indicating whether data corresponding to the at least one UE is contained in the PDSCH. The PDSCH may include a field that identifies data and a corresponding UE of the at least one UE that is contained in the PDSCH. The apparatus may transmit, to each relay of the plurality of relays, the priority of data transmission, wherein the priority of data transmission includes a priority for uplink and downlink transmissions.

Abstract: A UE may identify a first set of preserved resources of one or more sets of preserved resources. An aircraft-borne device may identify a first set of preserved resources of one or more sets of preserved resources. The first set of preserved resources may be associated with a time domain starting point, a time domain duration, and a frequency domain resource allocation. The UE may transmit, to an aircraft-borne device and the aircraft-borne device may, receive from the UE, over at least part of the first set of preserved resources, a synchronization signal and a first payload message. The first payload message may include a first emergency message and may be transmitted and received via one of a first PUSCH, a first PSSCH, or a PSCCH. The aircraft-borne device may forward, to a base station or another aircraft-borne device, at least the first emergency message.

Abstract: The present disclosure relates to the technical field of electrode materials and provides a titanium-based platinum-nickel electrode material, a preparation method, and an application thereof. The method includes: performing a first anodic oxidation and a second anodic oxidation sequentially on a titanium sheet in an ammonium fluoride solution to obtain an oxidized titanium sheet; performing calcination on the oxidized titanium sheet to obtain a titanium sheet containing a titanium dioxide layer; and performing electrodeposition on the titanium sheet containing the titanium dioxide layer in a platinum-based electrolyte to obtain the titanium-based platinum-nickel electrode material. The prepared titanium-based platinum-nickel electrode material effectively reduces the usage amount of Pt-based precious metals and can maintain high activity and stability to generate hydrogen peroxide on-line under the neutral condition; its cathode current density efficiency reaches 76.

Abstract: A unified method and systems for hand-object pose estimation based on monocular RGB images are provided.

Abstract: Disclosed are techniques for environment sensing by an electronic device, such as a user equipment (UE) or base station. In an aspect, the electronic device uses a radio frequency (RF) signal configured to transmit information on orthogonal frequency division multiplexing (OFDM) symbols in accordance with a wireless communication standard, such as Fifth Generation (5G) New Radio (NR), for environment sensing. The electronic device configures one or more transmission parameters for the RF signal based on one or more factors related to a resolution to be provided by the RF signal, a type of application for which the environment sensing RF signal is being transmitted, capabilities of the UE, and the like. The electronic device then transmits the environment sensing RF signal, over an uplink, downlink, or sidelink, as appropriate to the type of electronic device, in accordance with the one or more transmission parameters.