A determination system includes: a memory; and a processor coupled to the memory and programmed to execute a process comprising: acquiring location data representing a location of one or more user devices including a first sensor; searching for one or more public devices that is at a location corresponding to the location of the user device and that includes a second sensor having a same function as that of the first sensor included in the user device; requesting the user device to measure using the first sensor to acquire measurement data of the first sensor; acquiring measurement data of the second sensor included in the public device; and determining whether a user of the user device is legitimate based on a result of matching the measurement data of the first sensor with the measurement data of the second sensor.

An indoor positioning method based on image visual features. A Wi-Fi signal strength value of a Wi-Fi tag closest to a current location of a mobile device is matched with a signal strength list in a map database to obtain a first location of a first Wi-Fi tag with the greatest matching degree. A SURF descriptor of an image of the Wi-Fi tag closest to the current location of the mobile device is matched with SURF descriptors recorded in the signal strength list in the map database to discover an image of a Wi-Fi tag with the greatest matching degree, thereby obtaining a second location of a second Wi-Fi tag corresponding to the image of the Wi-Fi tag with the greatest matching degree. A three location of a three Wi-Fi tag is obtained according to a homography matrix corresponding to the image of the Wi-Fi tag with the largest matching degree and an empirical value of a positioning error. Positioning information of the mobile device is obtained according to the first location, the second location and the third location.

A wireless LAN router includes a directional antenna configured to transmit and receive wireless signals to and from each device, and a processing circuit. The processing circuit learns training data indicating an incoming direction of a wireless signal from an authorized device. The processing circuit then determines whether a wireless signal of a detection target device is a wireless signal from an authorized direction, using an incoming direction of the wireless signal from the detection target device received by the directional antenna and the training data obtained by the machine learning, and outputs a result of determination.

A positioning system for position determination in a goods logistics facility and a method for operating same. The positioning system includes a plurality of permanently installed anchor nodes that represent reference points in a common coordinate system. The positioning system is configured to determine a distance from a first anchor node to a second anchor node.

Methods, apparatus, systems and articles of manufacture are disclosed for locating mobile devices using wireless signals in mixed mode. A disclosed method includes generating an access point signal matrix based on signal strength values based on first signal data collected at a mobile device corresponding to first signals received from a plurality of access points for a first period of time, and based on second signal data collected at the plurality of access points corresponding to second signals received from the mobile device and the plurality of access points for a second period of time, determining a first group of contour perimeters corresponding to first ones of the signal strength values in the access point signal matrix that satisfy a first threshold, the first group of contour perimeters including an obstructed contour perimeter corresponding to second ones of the signal strength values in the access point signal matrix that do not satisfy the first threshold, determining a second group of contour perimeters by replacing the obstructed contour perimeter with a corrected contour perimeter, and determining a location of the mobile device based on the second group of contour perimeters including the corrected contour perimeter.

5G and especially 6G are intended to accommodate high-speed mobile user devices and access points such as wireless devices on trains and airplanes, while retaining enhanced mobile broadband eMBB service. Therefore, new resource-efficient, low-complexity procedures are needed for measuring and correcting the Doppler frequency shift. To assist user devices, a base station or access point can periodically broadcast a current geographical location of the base station or access point in a localization message. In some embodiments, the geographical location data can be included in a periodically broadcast system information message, such as unused space of a SSB (synchronization signal block) message or an SIB1 (first system information block) message. User devices can then determine a vector toward the base station or access point relative to the user device location and velocity, and thereby calculate a Doppler correction without a frequency scan or other overhead, according to some embodiments.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may monitor one or more first conditions pertaining to non-cellular communications between the UE and a non-cellular network while the UE is operating in a dual networking mode for steering, switching, or splitting traffic (e.g., an access traffic steering, switching, and splitting (ATSSS) mode) between the non-cellular network and a cellular network. The UE may predict an availability status of at least the non-cellular network based on at least one of the one or more first conditions. In some cases, the UE may determine whether to change dual networking modes based on the availability status and may communicate in accordance with the same or a different dual networking mode using at least one of the cellular network, the non-cellular network, or a combination thereof based on the prediction.

A positioning control method includes: determining a position of a positioning object; determining, based on the position of the positioning object, at least one target positioning beacon whose distance to the positioning object satisfies a predetermined condition; and sending a prompt message to the target positioning beacon, wherein the prompt message is intended to instruct a positioning beacon to switch a broadcast frequency from a first frequency to a second frequency which is greater than the first frequency.

An electronic device includes: a communication circuit; a memory storing one or more instructions; and at least one processor electrically connected with the communication circuit, and configured to execute the one or more instructions to: control the communication circuit to transmit a first short-range wireless communication signal having a first output intensity; and control the communication circuit to transmit a second short-range wireless communication signal having a second output intensity that is different from the first output intensity.

An information processing device wirelessly communicates with an electronic device via a wireless communication unit and includes a search result acquisition unit, a direction information acquisition unit, and a controller. The search result acquisition unit acquires information of a search result about the electronic device by a search via the wireless communication unit. The direction information acquisition unit acquires direction information representing a direction in which the electronic device exists, by short-range wireless communication with the electronic device via the wireless communication unit. The controller makes a determination about whether the electronic device found by the search is located within a range in a predetermined direction or not, based on the information of the search result and the direction information, and executes display processing of displaying a screen relating to the electronic device that is a target of the determination.