Abstract: Certain aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for channel state information (CSI) reference signal (RS) resource aggregation.

Abstract: An improved data mapping method for roadside LiDAR sensor data which is accurate, inexpensive to implement and that provides data which is easy to use and/or interpret. In an embodiment a computer processor running Geographic Information System (GIS)-based software obtains geographic coordinates data for a roadway section with objects within a detection range of a roadside LiDAR sensor system. Next, the computer processor receives roadside LiDAR sensor data expressed as LiDAR cartesian coordinates data for the roadway section, receives selection by a user of a plurality of reference objects defined by the geographic coordinates data and by the LiDAR cartesian coordinates data, calculates transition matrixes for transforming the LiDAR cartesian coordinates data into geographic coordinates data, and converts the LiDAR cartesian coordinates data into LiDAR geographic coordinates data using the transition matrixes.

Abstract: Methods, systems, and devices for wireless communications are described. A receiving device may receive, from a transmitting device, a configuration indicating a set of orbital angular momentum (OAM) modes for joint reporting, where at least one of the set of OAM modes is associated with transmission via two or more of a plurality of sets of antennas arranged in a set of concentric circular arrays. The receiving device may transmit, to the transmitting device, a report indicating precoding information for each of at least a subset of the set of OAM modes, where the precoding information includes one or more first parameters common to the set of OAM modes and one or more second parameters for respective ones of the at least the subset of the set of OAM modes.

Abstract: A virtual computer system includes virtualization software, and one or more physical network interfaces for connecting to one or more computer networks. The virtualization software supports one or more virtual machines (VMs), and exports one or more virtual network interfaces to the VM(s) to enable the VM(s) to access the computer network(s) through the physical network interface(s). The virtualization software modifies and filters network data frames from the VM(s) and from the physical network interface(s) to restrict one or more VMs to one or more virtual local area networks (VLANs) that are implemented within a VLAN topology. Restricting a VM to a VLAN limits the broadcast domain to which the VM belongs, which may reduce security risks facing the VM. Implementing the VLAN functionality within the virtualization software provides the functionality to every VM in the computer system, without requiring every VM to provide the functionality.

Abstract: This disclosure is directed to filtering in a transceiver of an electronic device. In some instances, active analog filters may be deployed in the transceiver of the electronic device to achieve greater linearity and/or reduce noise in the transceiver. However, as signal bandwidth grows increasingly larger, an active analog filter may consume excessive power. To remedy the excessive power consumption, a passive ladder LC filter may be used. Some LC ladder filters may include a limited quality factor (Q), which may lead to undesirable effects in the transceiver (e.g., voltage droop). To address these undesirable effects, certain components in the LC ladder filter may be relocated from an input port to a feedback chain of an amplifier coupled to the LC ladder filter. The new structure may enable components in the LC ladder filter to be tuned without causing additional voltage droop across the LC ladder filter.

Abstract: Disclosed are a protective starch-based film and its preparation method and application, belonging to the field of food packaging. According to the method for preparing the protective starch-based film, surfaces of zinc oxide nanoparticles are enabled to adsorb tannic acid and iron ions under the action of metal coordination by controlling the pH to obtain metallic polyphenol network coated zinc oxide nanoparticles, dispersion of the obtained nanoparticles is added to a starch gelatinization solution, and a melanin-like precursor is simultaneously added to form mixed liquid; and by controlling the pH of the mixed solution, ?-? stacking, self-polymerization and metal coordination are induced, so that a stable protective starch-based film with a nano-reinforced interpenetrating network structure is formed.

Abstract: Methods, systems, and devices for wireless communications are described. The method includes transmitting, to a base station, a capability parameter indicating one or more predictive retransmission feedback capabilities of the UE, receiving, from the base station, an activation indicator that indicates a predictive retransmission feedback procedure is enabled, receiving data from the base station, and transmitting a predictive retransmission feedback associated with the data to the base station, the predictive retransmission feedback being computed, in accordance with the activation indicator, prior to completing a decoding of the data.

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 occupancy time (COT) duration indication that indicates a first COT duration associated with a first channel occupancy initiated by the base station. The UE may initiate, during a time duration that is outside of the first COT duration and based at least in part on performing a listen-before-talk procedure, a second channel occupancy having a second COT duration. Numerous other aspects are described.

Abstract: Wireless communications systems and methods related to routing communications in a multiple-link environment are provided. A wireless communication device transmits, via a first link of a plurality of links, a first data packet of a plurality of data packets associated with a survival time. The device transmits, based on a first time period associated with the survival time elapsing, a second data packet via a second link of the plurality of links, where the second link is associated with the survival time.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may determine a duplexing configuration (e.g., frequency division duplexing (FDD) or time division duplexing (TDD)) of a carrier based on one or more synchronization signals. The UE may then receive a master information block (MIB) on the carrier, and may interpret one or more fields of the MIB based on the duplexing configuration of the carrier. The configuration dependent fields may include a special subframe field, a system information location field, or both. In some cases, such as in a TDD configuration, the UE may postulate a special subframe configuration of the carrier in order to receive the MIB, and may update the postulated special subframe configuration after receiving the MIB.

Abstract: An anti-biofouling shape-memory composite aerogel includes a unidirectional chitosan aerogel channel, a plant polyphenol coating, and a polyphenol/iron ion chelate. The plant polyphenol coating is evenly distributed on an inner wall of the unidirectional chitosan aerogel channel, and the polyphenol/iron ion chelate is located at a top end of the unidirectional chitosan aerogel channel. The anti-biofouling chitosan-based composite aerogel has an evaporation rate of 1.96 kg·m?2·h?1 at an illumination intensity of 1 kW/m2. The composite aerogel has shape-memory properties, and can quickly restore its original shape in water after extrusion, thereby accelerating the diffusion of substances to complete the modification of inner channels. In this way, desirable anti-biofouling ability is achieved, and excellent structural stability as well as continuous and efficient photothermal water evaporation are guaranteed in a complex water environment.

Abstract: Methods, systems, and devices for wireless communications are described. Techniques are described for a user equipment (UE) to trigger a sidelink channel state information (CSI) procedure without an associated data grant. In some cases, a CSI procedure may be triggered by sending a sequence on a specific resource. In some cases, a CSI procedure may be triggered by a sidelink control information (SCI) message which does not include a sidelink data grant. Techniques are described which avoid CSI reference signal (CSI-RS) resource collision. For example, CSI-RS resources may be selected based on channel sensing, UE identifiers, or a combination thereof. In some cases, UEs may be configured subsets of a CSI-RS resource pool for sending CSI-RS.

Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may transmit a trigger message to a second UE, where the trigger message triggers a channel state information (CSI) report that includes a first CSI reporting mode of a set of CSI reporting modes and a reporting quantity for the first CSI reporting mode. For a first reporting quantity, the first UE may trigger the second UE to transmit a CSI reference signal (RS), and the first UE may then receive the CSI-RS to determine CSI based on the CSI-RS. Additionally or alternatively, for other reporting quantities, the first UE may transmit the CSI-RS to the second UE, and the second UE may transmit channel state feedback to the first UE based on measuring CSI for the received CSI-RS, where the first UE determines the CSI based on the channel state feedback.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless communication device may transmit, in a time-frequency resource occasion to a second wireless communication device, a first orbital angular momentum (OAM) signal in a first OAM mode. The first wireless communication device may receive, in the time-frequency resource occasion from the second wireless communication device, a second OAM signal, in a second OAM mode, that is orthogonal to the first OAM signal. Numerous other aspects are described.

Abstract: Techniques for signaling dynamic region for PRACH transmission are described. In an aspect, the disclosure describes a method for receiving, at a user equipment (UE), an indication of a number of symbols that the UE is to use when transmitting via a physical random access channel (PRACH), and transmitting, by the UE, via the PRACH over one or more slots based on the number of symbols. In another aspect, the disclosure describes a method for generating, at a network device, an indication of a number of symbols that a UE is to use when transmitting PRACH, transmitting, by the network device, the indication to the UE. A UE and network device configuration as well as apparatuses and computer-readable medium related to these methods are also described.

Abstract: A user equipment (UE) may perform a random access procedure to synchronize with a network for uplink and/or downlink communication. The UE may transmit a first type of random access transmission that includes transmitting a preamble or a second type of random access transmission that includes transmitting a preamble and a random access message. The second type may result in reduced delay but may have lesser SNR tolerance than the first type. In some aspects, the UE may determine whether to transmit the first type or the second type, and may transmit the first type or the second type in a random access channel portion of a slot. The random access channel portion of the slot may be occupied by portions of either the first type of random access transmission or the second type of random access transmission, thereby enabling flexible utilization of multiple types of random access procedure.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, encoded packets that are encoded using network coding. The encoded packets may be associated with source packets that represent a data set. The UE may attempt to recover the source packets from the encoded packets received from the base station. Upon failing to recover the source packets, the UE may transmit, over a sidelink channel, a message requesting sidelink assistance in recovering the source packets.

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a base station and multiple user equipment (UEs) may participate in a federated learning operation in which each UE may transmit an unencoded uplink signal to the base station indicating one or more parameters associated with updating a local model at the UE. The base station may aggregate and average the received parameters to update a global model at the base station. Additionally, each UE that transmits an unencoded uplink signal may transmit reporting information associated with the unencoded uplink signal indicating that the unencoded uplink signal is transmitted or that a downlink control information was received. The base station may use the reporting information to determine an averaging value with which to average the aggregation of the received parameters.

Abstract: Techniques are described for wireless communication. An orthogonal frequency-division multiple access (OFDMA) configuration of an uplink channel is identified for communications in an unlicensed radio frequency spectrum band. An OFDMA waveform is generated based on the identified OFDMA configuration. The OFDMA waveform is communicated in a signal in the unlicensed radio frequency spectrum band. A virtual cell identifier of a first base station may be associated with transmissions between the first base station and a first user equipment (UE). A set of common resource blocks may be identified for transmission of a demodulation reference signal (DM-RS) between the first base station and the first UE. A configuration of an uplink channel may be dynamically selected for uplink communications in an unlicensed radio frequency spectrum band. A waveform may be generated based on the selected configuration. The waveform may be communicated in a signal in the unlicensed radio frequency spectrum band.

Abstract: A processing method that is performed by one or more processor is provided. The processing method includes determining a target video frame in a currently captured video; determining an object area in the target video frame based on a box selection model; determining a category of a target object in the object area based on a classification model used to classify an object in the object area; obtaining augmented reality scene information associated with the category of the target object; and performing augmented reality processing on the object area in the target video frame and the augmented reality scene information, to obtain the augmented reality scene.