A method of estimating indoor location of an electronic device is disclosed. The electronic device will detect multiple Wi-Fi signals, each of which originates from a unique Wi-Fi access point in a building. For each of the signals, the system will determine an access point device identifier and a signal strength indicator, retrieve location coordinates for the access point; and various candidate constants to apply to a distance calculation for determining a distance from the electronic device to each of the access points. The system will repeat the distance calculation multiple times for each of the various constants and determine which constant minimizes a loss value. The system will identify a set of coordinates of the electronic device that are associated with the constant that minimizes the loss value, and then use the coordinates to estimate a location of the electronic device within the building.

An electronic device according to various embodiments of the present disclosure comprises: at least one wireless communication module; and a processor, wherein the processor can control the wireless communication module to respectively receive a plurality of pieces of data from a plurality of external electronic devices, identify a time when each of the plurality of pieces of data has been received, and, when location information regarding the plurality of external electronic devices is included in the plurality of pieces of data, calculate the location of the electronic device by using a time difference in reception of the plurality of pieces of data and the location information regarding the plurality of external electronic devices. Various other embodiments are also possible.

It is inter-alia disclosed a method comprises: obtaining or holding available at least one training set of radio signal observation results, wherein a respective training set of radio signal observation results is held available in association with identification information of a corresponding area of interest on a site, wherein a respective training set of radio signal observation results is captured at a corresponding observation position within a corresponding area of interest on said site; obtaining or holding available area of interest information indicating whether at least one tracking device has been determined to have entered and/or to have been located within a corresponding area of interest on the site; obtaining or holding available current radio signal observation data of a current tracking device representing one or more current sets of radio signal observation results captured by a radio interface of the current tracking device when present on said site, wherein a respective current set of radio signal observation results is captured at a corresponding observation position on said site; determining whether the current tracking device has entered or is located within an area of interest, identification information of which is associated with the at least one training set of radio signal observation results, based on at least one current set of radio signal observation results, based on at least one training set of radio signal observation results associated with the identification information of the area of interest, and based on the area of interest information.

A method and apparatus for locating a beacon in physical space, where the beacon communicates with at least one of a plurality of gateways in the physical space. First signals are transmitted between gateways located at respective physical locations. Gateway-to-gateway measurements of power related to the first signals are stored. The gateway-to-gateway measurements are averaged to obtain averaged gateway-to-gateway measurements. Second signals are transmitted between a beacon and one or more of the gateways. Beacon-to-gateway measurements of power related to the second signals are stored. The beacon-to-gateway measurements are averaged to obtain averaged beacon-to-gateway measurements. First distances between the beacon and the gateways are calculated based on the averaged gateway-to-gateway measurements and the averaged beacon-to-gateway measurements. Second distances are calculated based on at least ones of the averaged beacon to gateway measurements and an expected measurement of power related to the beacon. Position of the beacon is determined based on the second distances. The position of the beacon is transmitted so that the position is subsequently displayed.

Apparatus and methods of artificial intelligent based provision of digital content where and when the digital content is needed based upon where an agent is located and a purpose for accessing the content. A location of a user seeking to access the digital content may be used that enables access to the content. Persistent digital content is linked to location coordinates. A physical onsite location may be linked with digital content to enable provision of a user interface with augmented reality that combines aspects of the physical area with location specific digital content. In addition, access to digital content may be limited to users in defined access areas.

In the present invention, to make it possible to enhance the accuracy of positioning in an area not reached by a GNSS signal: a first position of a host device is estimated; the error of the first position is estimated; from a second device, other device information is received that includes a second position of the second device and a second error of the second position that have been estimated by the second device; and if the second error is smaller than the first error, the first position and first error are corrected on the basis of the other device information.

Systems and methods are described for determining and verifying real-time location of a user based on physical location of a user device. The user device receives a generated geo-referenced position data from a server and correlates the geo-referenced position data with a ground-truth information to determine physical location of the user. The user device selects a set of test points using interpolation of a desired path of the user, where the desired path is determined based on the physical location of the user. The user device displays the set of test points on the desired path on a display unit and initiates a test call through a mobile network at each test point of the set of test points to verify the physical location of the user.

A method for associating an address with a fingerprint, according to an aspect of the present invention, comprises the steps of: receiving collected information including an address and a wireless LAN fingerprint; storing the received collected information; filtering multiple pieces of stored collected information according to addresses, on the basis of multiple pieces of collected information for adjacent addresses; and constructing a radio map by using the collected information filtered according to addresses.

Systems, methods and instructions for creating building models of physical structures is disclosed. The building model may be a collection of floors defined by outlines containing regions that may be offset relative to a main region, and a collection of connectors. Connectors may have connection points for tracking, routing and sizing. Connectors may indicate elevation changes through georeferenced structural features. Signal elements may also be features that provide corrections when tracking. Feature descriptors are data that describes the structural configuration and signal elements enabling them to be matched to previously collected data in a database. User interface elements assist a user of a tracking device in collecting floor information, structural features and signal features and validating certain collected information based on previously known information. The height of floors may also be inferred based on sensor data from the tracking device.

Indoor positioning systems and methods including a reverse-beacon for location determination and presence sensing technology. The reverse-beacon is any device comprising a transceiver and a computer operating with system nodes and will generally be in the form of a smartphone or other mobile computer. The systems and methods utilize wireless signals of any device that adheres to a general-purpose communication protocol, such as Bluetooth™ and Wi-Fi, to provide location-based services such as location determination and acting as a ground-truth field for presence sensing systems. The systems and methods operate by passively licensing to wireless communications that take place during the ordinarily course of operation of a wireless network irrespective of the presence of the reverse-beacon.