Abstract: Backscatter Device (BKD) placement and placement calibration may be provided. A plurality of ambient energy sources of a Three-Dimensional (3D) space may be caused to transmit charging frames for Backscatter Devices (BKDs). Each of the charging frames may include a payload having a Media Access Control (MAC) address of transmitting ambient energy source. An amount of ambient energy received from the charging frames of the plurality of ambient energy sources and each contributing source may be received from survey devices placed at positions along a sub-space of the 3D space. The amount of ambient energy available from each contributing source at each positions along the sub-space per predetermined time period may be predicted based on the amount of ambient energy received from the plurality of ambient energy sources.

Abstract: An antenna switching method and a terminal antenna are disclosed, and relate to the field of antenna technologies. A specific solution involves: receiving, by the electronic device, a target signal with a target polarization characteristic, controlling the terminal antenna to operate in a first state when an attitude of the electronic device is the first attitude, where the terminal antenna in the first state has a first polarization characteristic, and the first polarization characteristic corresponds to a target polarization characteristic of a target signal received in the first attitude; and controlling the terminal antenna to operate in a second state when the attitude of the electronic device is the second attitude, where the terminal antenna in the second state has a second polarization characteristic, and the second polarization characteristic corresponds to a target polarization characteristic of a target signal received in the second attitude.

Abstract: A method, apparatus, and a computer-readable storage medium are provided for a machine learning (ML) model based radio resource management. In one example embodiment, the method may include a network node defining a validity area and a measurement group for at least a ML model for one or more user equipments and transmitting the validity area and the measurement group of the at least one ML model to the user equipment.

Abstract: The present invention relates to methods and apparatus for testing and mitigating problems with Spectrum Access System (SAS) service provider systems. An exemplary method includes performing, by an SAS switch and availability function (SSAF), one or more tests on a first SAS service provider system, the first SAS service provider system providing SAS services to one or more wireless base stations (e.g., CBSDs) of a first wireless network (e.g., a first CBRS network); and determining whether or not the first SAS service provider system is experiencing problems providing SAS services to the first wireless network based on results of the one or more tests performed on the first SAS service provider system. In response to determining that there are problems with the first SAS service provider system switching the one or more wireless base stations to a second SAS service provider system.

Abstract: Methods and wireless communication devices for notifying a peer device about duty cycle transmission budget exhaustion. An embodiment transmits a first data frame carrying a power management bit to a peer device when a transmission budget is about to be exhausted, updates the transmission budget over time, and transmits a second data frame carrying a power management bit to the peer device to resume communication according to the updated transmission budget. Another embodiment inserts a Restricted access window Parameter Set (RPS) Information Element (IE) into a beacon frame to reserve a time slice when a transmission budget is about to be exhausted and transmits the beacon frame on a wireless channel to notify peer devices transmission on the wireless channel in the time slice is prohibited.

Abstract: A radio frequency integrated circuit (RFIC), including a power amplifier (PA) connected to an antenna through a first electromagnetic (EM) element, the PA configured to receive a transmit signal from a second EM element, a low noise amplifier (LNA) connected to the first EM element and the second EM element, the power amplifier and the LNA comprising separate amplifier cores, and wherein the first EM element comprises a first plurality of interwound windings occupying a first common area and the second EM element comprises a second plurality of interwound windings occupying a second common area.

Abstract: An apparatus for near field communication (NFC) reading includes an outer body and a power source disposed within the outer body, wherein the power source is configured to provide electric power. The apparatus also includes a processing circuit connected to the power source to provide power to the processing circuit, wherein the processing circuit is configured to receive identification data from an external device, transmit the identification data to a remote server communicatively connected to the apparatus, and generate an external response for the external device based on the identification data. Further, the apparatus includes a display communicatively connected to the processing circuit, wherein the display is configured to information from processing circuit.

Abstract: A bicycle-implemented transmission method is applied in a transmitter component of a bicycle electronic system. Each component of the system has zero or more pieces of information attributable thereto and is candidate to communication within the system. Each of the attributable pieces of information includes an identifier which is unique in the bicycle electronic system. According to the method: a payload is formed, including an attributable piece of information and an identifier of an instruction executable by an addressee component; a value of a characteristic of a Bluetooth Low Energy (BLE) service of a Generic Attribute Profile (GATT) server of a BLE network architecture is set to the payload; and the characteristic is transmitted to the addressee component or to a receiver component to which the addressee component is directly or indirectly connected.

Abstract: A method is disclosed which is for controlling antenna calibration of an antenna system residing in a wireless communication network. The antenna calibration is for compensation of impairments associated with operation of the antenna system. The method comprises performing over-the-air measurements of the antenna calibration during unused symbols defined by a predetermined pattern of unused symbols, wherein the predetermined pattern of unused symbols comprises unused symbols directly preceding synchronization symbols and/or unused symbols directly following synchronization symbols. In some embodiments, the predetermined pattern comprises sequences of consecutive unused symbols. Each sequence of consecutive unused symbols which has a length exceeding a measurement length threshold may comprise one or more measurement opportunities, and each measurement may be performed during a respective measurement opportunity.

Abstract: A composite enclosure component for an electronic device is disclosed. The composite enclosure component may include metallic nanoparticles, non-metallic nanoparticles, or a combination of these. The nanoparticles of the composite enclosure component may provide a hue, enhanced mechanical properties, or both.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may use the techniques described herein to reattempt a video telephony (VT) call after receiving a rejection message indicating that a prior attempt at the VT call failed. In some cases, the UE may have a first configuration indicating that the UE is to redial VT calls exclusively using packet-switched (PS) networks. In other cases, the UE may have a second configuration indicating that the UE is to switch to a circuit-switched (CS) network after one or more failed attempts at the VT call using PS networks. In any case, once the UE receives a rejection message in response to a prior attempt at a VT call, the UE may reattempt the VT call based on a rejection cause in the rejection message and whether the UE has the first configuration or the second configuration.

Abstract: Provided is an antenna apparatus mounted on a movable object, the antenna apparatus including an antenna array including: a plurality of first antennas which are arranged by being shifted by a distance equivalent to an odd multiple of a half period of a maximum fluctuation period of a radio wave having a longest fluctuation period among a plurality of radio waves received from an antenna of a communication partner; and a plurality of second antennas which are respectively arranged by being shifted with respect to the plurality of first antennas by a distance equivalent to an odd multiple of a half period of a minimum fluctuation period of a radio wave having a shortest fluctuation period among the plurality of radio waves.

Abstract: This application discloses a message push method and an apparatus. The method includes: receiving, by a first terminal, a first notification message and pushing the first notification message to a second terminal, when the first terminal and the second terminal are having a communication connection successfully established; receiving, by the first terminal, a second notification message and storing the second notification message into a storage area, when the first terminal and the second terminal are communicatively disconnected; and pushing, by the first terminal to the second terminal, a notification message stored in a storage area, when the first terminal and the second terminal recover from being communicatively disconnected to having a communication connection successfully established.

Abstract: Mechanisms for performing a channel information estimation procedure. A method is performed by a network node. The network node serves a user equipment via a meta-surface over a radio propagation channel. The method includes performing the channel information estimation procedure. The channel information estimation procedure involves compensation for configurations used by the meta-surface. The compensation pertains to estimation of channel quality of the radio propagation channel between the user equipment and the network node via the meta-surface. The method includes performing a data transmission over the radio propagation channel. The data transmission is performed with transmission settings as determined by the channel information estimation procedure.

Abstract: In response to receiving instructions from a Spectrum Access System (SAS) to modify (e.g., reduce and/or cease) network transmissions in one or more Citizens Broadband Radio Service (CBRS) sub-bands following the SAS's detection of incumbent activity, the network's Operation Support System (OSS) predicts or measures received signal strength (RSS) levels based on the SAS's original instructions, estimates RSS levels based on modified versions of the SAS's instructions that prioritize higher-NPV (net present value) CBRS base stations (CBSDs) over lower-NPV CBSDs, selects a modified version whose RSS levels are approximately the same as or less than the RSS levels of the SAS's original instructions, and transmits to the SAS requests for the selected modified version. In this way, the OSS can achieves more-efficient allocation of the CBRS spectrum and therefore more-desirable network communications without interfering with the incumbent's communications.

Abstract: A method (1700) for antenna power scaling in a fronthaul lower-layer split, LLS, is provided. The method is performed by a baseband unit, BBU (102, 202, 302), for assisting a Radio Unit, RU (104, 204, 304), in scaling a transmit power of one or more antennas when performing beamforming. The method includes transmitting (1702) at least one antenna power scaling factor to the RU for scaling the transmit power of the one or more antennas.

Abstract: Methods and systems for power supply unit (PSU) control. A method includes measuring one or more properties of the PSU to obtain property measurements, and initiating transmission of the property measurements to a machine learning (ML) agent hosting a trained ML model. The method further includes receiving the property measurements at the ML agent, and processing the received property measurements using the trained ML model to generate suggested actions to be taken by the PSU. The method further includes predicting the effect of each of the suggested actions on the measured PSU properties, and selecting a subset of the suggested actions predicted to have a significant impact on the measured PSU properties. The method further includes initiating transmission of the selected subset of suggested actions to the PSU, and performing, at the PSU, the selected subset of suggested actions.

Abstract: When discontinuous reception is used with positioning and reference signals for positioning are received in a plurality of frequency bins, it may be that a frequency bin is missed. That may decrease an accuracy of the positioning. Hence, an apparatus receiving the reference signals, when determining that one or more frequency bins are missed, may use, when one or more conditions are met, earlier values per a missed frequency bin, when estimating at least one characteristic for positioning.

Abstract: Certain aspects of the present disclosure provide techniques and apparatus for duty cycle determination for radio frequency (RF) exposure evaluation. A method of wireless communication by a wireless device includes determining a duty cycle associated with a transmission scenario based at least in part on a past duty cycle associated with the transmission scenario; and transmitting a signal at a transmit power determined based at least in part on the duty cycle and an RF exposure limit.

Abstract: A method and a device for transmitting audio data based on Bluetooth low energy are disclosed. The method comprising: obtaining a plurality of audio data frames to be transmitted; dividing a quantized spectrum of each audio data frame into M groups of spectrum respectively, wherein M is a positive integer greater than 1; dividing each audio data frame into N groups of data based on the M groups of spectrum, wherein N is a positive integer greater than 1, and the N groups of data have different transmission priorities; and transmitting the N groups of data according to their respective transmission priorities within a preset transmission times range based on a predetermined Bluetooth low energy transmission protocol, wherein the group of data with a lower transmission priority is transmitted only after the group of data with a higher transmission priority is received correctly.