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.

Abstract: A device and method for communicating identifying information to a nearby portable electronic device is disclosed. A low energy electronic device comprises a transceiver operable to transmit and receive signals and a processing unit in communication with the transceiver. The processing unit, in response to being activated by user input, switches the transceiver into a one-way communication mode, wherein the transceiver transmits a generic wake-up signal comprising a generic wake-up identifier for a first time period, and transmits a user identifier signal comprising a user identifier for a second time period after the first time period as elapsed. The processing unit then switches the transceiver into a two-way communication mode after the second time period has elapsed to facilitate receipt of an incoming confirmation signal.

Abstract: In accordance with an embodiment, a method includes receiving, on a first Bluetooth link between a first gateway and a first Bluetooth device, a first Bluetooth message sent by the first Bluetooth device; encapsulating, using a transport protocol adapted to a non-Bluetooth link between the first gateway and a second gateway, the first Bluetooth message to obtain a second Bluetooth message; and sending the second Bluetooth message to the second gateway on the non-Bluetooth link, wherein the second gateway decapsulates the second Bluetooth message using the transport protocol to obtain the first Bluetooth message, and sends the first Bluetooth message to a second Bluetooth device on a second Bluetooth link with the second Bluetooth device, wherein the non-Bluetooth link is a wireless local area network link or a wired link.

Abstract: An example may include verifying a call number to be used by an enterprise entity by selecting an enterprise number to verify from a database of one or more enterprise numbers assigned to a particular enterprise entity, initiating an outbound call destined to the enterprise number from an origination number known to an enterprise platform, receiving a return call to the origination number from the enterprise number, determining whether the return call was received within a defined time interval, and updating the enterprise number status in memory as a verified enterprise number when the return call was received within the defined time interval.

Abstract: A method includes acquiring multiple pieces of first received signal quality information at a receiver, where the multiple pieces of first received signal quality information represent qualities of signals received at the receiver, generating first conditional sample statistical values based on the multiple pieces of first received signal quality information and phase shift arrays corresponding to the signals, determining the first phase shift array that meets a communication requirement according to the first conditional sample statistical values, where the first phase shift array includes the phase shift value for at least one reflective element of an IRS, and configuring the IRS based on the first phase shift array.

Abstract: Execution of at least one script and at least one application on at least one wireless test device is facilitated. The at least one script includes device-executable code configured to simulate user interaction with the at least one application on the at least one wireless test device. The at least one script is executed to simulate the user interaction, while the at least one wireless test device is connected to a wireless network. Results of the execution of the at least one script and the at least one application are logged using a test platform. The results include application layer metrics and at least one of data link layer metrics and network layer metrics. The application layer metrics and the at least one of data link layer metrics and network layer metrics are correlated by timestamp.

Abstract: A multiplexer includes a common terminal, first and second input/output terminals, a filter connected between the common terminal and the first input/output terminals and having a pass band including a first frequency band, a filter that is connected between the common terminal and the second input/output terminal and having a pass band including a second frequency band lower than the first frequency band, and an additional circuit including a first end connected to the common terminal and a second end connected to portion of a path connecting the common terminal and the first input/output terminal, the portion excluding the common terminal. The additional circuit includes a resonator including IDT electrodes on a piezoelectric substrate, and the IDT electrode with a widest electrode finger pitch is connected to the common terminal.

Abstract: A near field communication controller integrated circuit includes a power management circuit configured to retransmit an external supply voltage from at least one power supply input node to at least one power supply output node in a bypass power supply mode. The power management circuit is hardware configured to automatically enable the bypass power supply mode in response to the external supply voltage being present at the at least one power supply input node.

Abstract: An electronic device includes: a frame including a coupling surface; a circuit board assembly coupled to the coupling surface of the frame, the circuit board assembly including a circuit board and a fixing hole provided in a surface of the circuit board and penetrating the circuit board in a thickness direction; a connecting member electrically connected to the circuit board assembly; and a circuit board fixing member provided on the coupling surface of the frame and passing through the fixing hole in the circuit board to fix the circuit board assembly to the frame, wherein the circuit board fixing member includes: a snap-fitting portion configured to be elastically deformed when passing through the fixing hole to couple the circuit board assembly to the coupling surface, and configured to prevent the circuit board assembly coupled to the coupling surface from moving; a guide groove in which the connecting member is accommodated; and a body portion fixed on the coupling surface and configured to support the s

Abstract: In a first balun of a radio-frequency circuit, a first end of a first coil is connected to an amplifier, and a second end of the first coil is connected to a ground. In the first balun, a first end of a second coil is connected to a first switch, and a second end of the second coil is connected to a second switch. In a second balun, a first end of a third coil is connected to the first end of the second coil via the first switch, and a second end of the third coil is connected to the second end of the second coil via the second switch. In the second balun, a first end of a fourth coil is connected to a filter, and a second end of the fourth coil is connected to the ground.

Abstract: A vehicle communication system comprises a first housing configured to be mounted inside the vehicle and a second housing configured to be mounted outside of the vehicle. A router is coupled to a first electronics module and an antenna selection module. The router, first electronics module, and antenna selection module are disposed in the first housing. A first Wi-Fi antenna is disposed in the first housing and coupled to the antenna selection module. A second Wi-Fi antenna is disposed in the second housing and coupled to the antenna selection module. A modem is disposed in the first housing or the second housing and coupled to the router. The antenna selection module comprises a switch operable by a user of the communication system for selecting between a plurality of Wi-Fi coverage states including an inside vehicle coverage state, an outside vehicle coverage state, and an inside and outside vehicle coverage state.