A device for RF sensing includes communication circuitry configured to communicate over an unlicensed frequency band and a licensed frequency band, the communication circuitry configured to transmit a unique signal over the unlicensed frequency band using at least one antenna of the one or more antennas and receive a corresponding return signal from at least one antenna of the one or more antennas, the at least one receiver configured to process the corresponding return signal to determine at least an amplitude and phase (td) of the corresponding return signal, and a look up table (LUT) having characterization information relating to the amplitude and phase (td) of the corresponding return signal, wherein the device is configured to use the characterization information to determine a use state or a gesture of the device and alter at least one operating parameter of the device based on the determined use state or gesture.

A method for connecting microwave antennas to a blockchain network includes obtaining first positional data of the first microwave antenna, obtaining second positional data of the second microwave antenna, setting a first alignment position based on the first positional data, and a setting second alignment position based on the second positional data, positioning the first microwave antenna according to the first alignment position, positioning the second microwave antenna according to the second alignment position, measuring a received signal level (RSL) corresponding to a signal level between the first and second microwave antennas while the antennas are aligned according to the first and second alignment positions, comparing, the measured RSL to a predetermined RSL corresponding to an acceptable signal level, and determining that the first and second alignment positions correspond to at least an acceptable signal level between the first and second microwave antennas when the measured RSL is greater than the predetermined RSL.

Provided is a mobile terminal testing device that can reduce time required for measurement. An Early Fail control unit includes a Fail condition setting unit that sets a condition for determining whether a measurement result is Fail, a Fail point management unit that manages information on a Fail point, which is a measurement position at which the measured level is below a regulated level and is determined to be Fail, and an Early Fail determination unit that determines whether a result is Fail even if the measurement is continued, based on information on the Fail points managed by the Fail point management unit. When measurement of Spherical coverage of 5G NR is performed, the Early Fail control unit determines whether the result is Early Fail in which the result is Fail even if the measurement is continued, and stops the measurement when the result is determined to be Early Fail.

There is provided a mobile terminal testing device that can improve the accuracy of measurement results. A reference position measurement control unit 18c that measures output power of a DUT 100 at a Reference position, which is any preset measurement position, each time a certain period of time elapses in a case where a total spherical scanning of the DUT 100 is performed, and that, in a case where the output power is equal to or less than a preset regulated Power, interrupts the measurement, excludes measurement data after the previous measurement at a Reference position from the measured value, and enables the measurement to be resumed from the excluded measurement position is provided.

A method for recommending an installation position of a base station, a storage medium, a mower, and a mobile electronic device are provided. The method acquires satellite observation data at a plurality of sampling points along a boundary of a target map; determining target sampling points satisfying a preset condition according to satellite observation data at each sampling point; determining common satellite observation frequency bands according to satellite observation data at the target sampling points; determining the number of the common satellite observation frequency bands at each sampling point according to the common satellite observation frequency bands and the satellite observation data at each sampling point; and determining recommendation information of the installation position of the base station according to the number of the common satellite observation frequency bands at each sampling point.

The technology includes a method, computer medium, and system for remote testing over-the-air (OTA) audio quality using a test platform positioned at core network, the test platform comprising first and second cellular handsets and bridging logic that interconnects, controls, and bridges the first and second cellular handsets. The method includes triggering the bridging logic. The bridging logic initiates a first call over the first cellular handset to a tester, and initiates a second call over the second cellular handset to a destination, wherein the second call is initiated over-the-air. The bridging logic and the first and second cellular handsets are positioned in a location that causes routing by a cellular network of the first call over a segment under test. The bridging logic bridging audio between the first and the second calls, including relaying audio. The tester determines that the second call was established based on the relayed audio.

A method of calibrating a phased array antenna is provided. The method includes performing a relative calibration of a subset of antenna elements of an antenna lattice relative to one another based on in-line calibration measurements between a calibration line and the subset of antenna elements to yield a calibrated subset of antenna elements; capturing a first OTA calibration measurement pair, wherein the first OTA calibration measurement pair comprises a first OTA calibration measurement associated with a particular geometric relationship, determining a complex coupling ratio associated with the particular geometric relationship based on the first OTA calibration measurement and the second OTA calibration measurement, capturing a second OTA calibration measurement pair associated with the particular geometric relationship, and determining, at least one of a phase correction factor or a gain correction factor between a complex gains of a pair of uncalibrated antenna elements.

An over-the-air measurement system for testing a reconfigurable intelligent surface (RIS) includes a signal generator circuit configured to generate at least one RF signal, at least one RF antenna configured to transmit the at least one RF signal and to receive at least one reflected RF signal, and a positioner unit configured to hold an RIS circuit in an adaptable position. The at least one RF antenna includes only one RF antenna or only one RF antenna array functioning both as transmitter and receiver of the at least one RF signal. The measurement system is configured such that far-field conditions of the at least one transmitted RF signal are provided at the RIS circuit, and that far-field conditions of the at least one reflected RF signal are provided at the at least one RF antenna. The measurement system is configured to analyze the signals to determine a reflection parameter.

A system includes a positioner unit configured to hold a passive RF structure in an adaptable position. The system also includes an instrument configured to generate a stimulus RF signal and an RF antenna being connected to the instrument. The RF antenna is configured to transmit the stimulus RF signal to the passive RF structure in a first polarization and/or in a second polarization and to receive a reflected signal from the passive RF structure in the first polarization and/or in the second polarization. The instrument further is configured to obtain measurement data based on the stimulus RF signal and the reflected signal. An analysis circuit determines a corrected equivalent source of the passive RF structure based on a distance between the RF antenna and the passive RF structure and based on the measurement data, wherein the corrected equivalent source is corrected for an influence of the RF antenna.

A method is disclosed for a control node for a distributed multiple-input multiple-output (D-MIMO) system comprising a plurality of access points. The method includes, during a calibration process with over-the-air reference signaling between access points, wherein the calibration process comprises a plurality of reference signaling occasions, and for at least one particular reference signaling occasion, dynamically selecting (among the plurality of access points and based on information obtained by measurements performed during a previous reference signaling occasion) a first access point, and controlling the first access point to act as a reference signal transmitter during the particular reference signaling occasion.