The invention provides a method and system for tracking a position of one or more Wi-Fi devices of a plurality of Wi-Fi devices. For tracking the position of the one or more Wi-Fi devices, a Triggering Router triggers the one or more Wi-Fi devices to transmit one of a broadcast probe and a directed probe through broadcasting hidden SSID networks and common SSIDs that increase a probing tendency of the one or more Wi-Fi devices. The plurality of Wi-Fi sniffers, then, collect measurement data associated with the one or more Wi-Fi devices in response to detecting the broadcast probe transmission and the directed probe transmission. Thereafter, the position of the one or more Wi-Fi devices is estimated using an adaptive machine learning model based on an indoor model whose parameters are tuned based on radio frequency (RF) measurements from the plurality of Wi-Fi devices and the measurement data.

A positioning system uses radio wave strengths of radio waves received from first and second wireless transmission terminals movable through an indoor space to locate positions of the terminals. The positioning system includes plural wireless receivers disposed in the indoor space, and a position estimating component that estimates the positions of the terminals based on positions of the receivers using first and second position estimation data in a limited range of the reception data generatable by the receivers. The receivers detect the radio wave strengths and can generate reception data including information relating to the radio wave strengths. At least one of the position estimating component and the receivers acquires the first and second position estimation data limited to first and second set regions suited to the first and second wireless transmission terminals from the reception data receivable relating to the first and second wireless transmission terminals, respectively.

A method for geolocating a receiver by measuring times of reception, by the receiver, of a plurality of geolocation signals originating from a plurality of emitters, the geolocation signals are emitted on multiple different wavelengths, at least one geolocation signal having a frequency less than 1 GHz.

An information processing apparatus comprises a recording module; an extraction module which extracts maximum radio wave intensity from the radio wave intensities recorded in the same time zone and extracts the radio wave intensities of other first communication devices arranged in the vicinity of a position where the first communication device with the maximum radio wave intensity is installed; and a positioning module which measures a position of the second communication device based on the plurality of the radio wave intensities extracted by the extraction module, wherein the positioning module determines that the second communication device is present at a position where the first communication device with the maximum radio wave intensity is installed on condition that the maximum radio wave intensity extracted by the extraction module is equal to or greater than a threshold value.

A method, apparatus and computer readable storage medium determine the position of a mobile device. Position data items are collected that indicate if the mobile device was located in a vicinity of a predetermined public transportation building when the respective position parameter was captured. Motion data items are also collected that represent a respective motion parameter captured by the mobile device within the vicinity of the predetermined public transportation building. Based on the positioning data item(s), the motion data item(s) and/or public transportation data, it is determined if the mobile device has left the vicinity of the predetermined public transportation building on board a public transportation vehicle and/or has arrived at the vicinity of the predetermined public transportation building on board a public transportation vehicle and, if so, the motion data item(s) are associated with a boarding or waiting and/or arrival area for passengers of the public transportation vehicle.

This invention describes a Spatial Intelligence System that provide radio positioning/navigation with additional spatial data in support of automation, machine learning and inference-based systems. More specifically and in particular, the present invention, is such a radio positioning/navigation system that integrates, correlates with or obviates the need of the global navigation satellite systems (GNSS) with a Pulsed Wireless Location System (PWLS) to provide positioning/navigation/timing data either within a line-of-sight barrier using an ad-hoc coordinate system, a direct line of sight of GNSS beacon geographic coordinate system or a ad-hoc translation to geographic coordinate system. The system generically offers the ability to use a low cost tag or location device with anchor processing or a higher cost, higher capability tag or location device with local processing simultaneously.

Embodiments of present disclosure disclose a method for updating geomagnetic information performed at a computing device, which belong to the field of electronic technologies. The method includes: receiving target geomagnetic information and target location assistance information that are transmitted by a terminal during positioning; determining a target geographical location corresponding to the target location assistance information in a case that geomagnetic information corresponding to a current geographical location of the terminal is invalid; and updating geomagnetic information corresponding to the target geographical location according to the target geomagnetic information in a prestored correspondence between a geographical location and geomagnetic information. According to the embodiments of the present disclosure, efficiency of updating geomagnetic information can be improved.

A method of creating a profile of a room via a plurality of wireless local area network (WLAN) access points may include determining, via a processor executing code instructions of an information handling system, a location fingerprint of a plurality of location data points of an information handling system relative to a plurality of address-identified access points; detecting a received signal strength indicator (RSSI) between the location data points of the information handling system and the access points and a time of flight (TOF) signal distance between the information handling system and the plurality of WLAN access points; and comparing the RSSI to a time of flight (TOF) signal between the location data points and the plurality of address-identified access points to: establish a location fingerprint for the location data points; and detect a reduction in power related to the RSSI passing through a barrier via a network interface device of the information handling system with at least one identified access point to define a barrier location.

A method for locating wireless tags is described. A signal including a RoomID generated by a transceiver is received by a wireless tag. The RoomID identifies a room corresponding to the transceiver and the wireless tag receives the signal asynchronously without being synchronized with the transceiver. A tracking packet including the RoomID and an identifier of the wireless tag is broadcasted by the wireless tag. The tracking packet is received by an access point which provides the tracking packet to a localization system that determines a location of the wireless tag based on the RoomID.

The present invention provides a nursing care recipient watching support system. In the nursing care recipient watching support system, position information with respect to a measuring position, and indoor compartment attribute information such as a living room, a share room, a conversation room, a kitchen, a bathroom and an entrance, as well as watching level information corresponding to the indoor compartment attribute information are stored in storing unit 30. Position information extracting means 40 extracts the position information, the indoor compartment attribute information and the watching level information. Output means 60 outputs the position information, the indoor compartment attribute information and the watching level information, According to this, it is possible to estimate an existent position of a nursing care recipient, and to support a watching operation of the nursing care recipient.