Inter-alia, a method is disclosed comprising: receiving one or more beacon signals sent by one or more beacon devices (140-1-140-5); determining one or more identifier information of the one or more beacon devices, wherein the one or more identifier information of the one or more beacon devices are represented by the one or more beacon signals; and broadcasting or triggering broadcasting broadcast information for enabling determining of a position of the at least one first apparatus based at least partially on the determined one or more identifier information of the one or more beacon devices, wherein the broadcast information at least partially comprises or represents the determined one or more identifier information of the one or more beacon devices. It is further disclosed an according apparatus, computer program and system.

A first estimation unit estimates, based on pieces of information on the reception strength acquired by an acquisition unit in a first time period, a location of a transmitter. A first determination unit determines, based on the location of the transmitter estimated by the first estimation unit, an area in which the transmitter is present. A second estimation unit estimates, based on pieces of information on the reception strength acquired in a second time period, the location of the transmitter. A second determination unit determines, based on the location of the transmitter estimated by the second estimation unit, the area in which the transmitter is present. A correction unit corrects, when a determination result by the first determination unit is different from a determination result by the second determination unit, the determination result by the first determination unit to the determination result by the second determination unit.

An ultra-wideband assisted precise positioning system and an ultra-wideband assisted precise positioning method are provided. The method includes: arranging a plurality of device nodes in a target area; configuring a central control device node to communicatively connect to the device nodes; configuring the device nodes to perform a positioning process to obtain measured distances and positioning positions to be corrected; and configuring a central control processor to execute a positioning algorithm. The positioning algorithm includes: obtaining the measured distances and the positioning positions to be corrected; for each of the positioning positions to be corrected, performing a center-of-gravity weighting processing on neighboring points for obtaining initial guess positions; and obtaining the initial guess positions to input to an optimizer and optimize an objective function, and finding corrected positions with relatively smallest errors. The objective function includes empirical weights associated with distance errors of the measured distances.

A real-time locating system of the present disclosure may be used in connection with a particular facility and may include a tag associated with an object disposed within the facility. The tag may be configured to continuously emit radio frequency signals encapsulating a tag identifier and a battery status. The real-time locating system may also include a sensor positioned at a known location within the facility. The sensor may be configured to receive radio frequency signals from the tag and determine an associated signal strength. The real-time locating system may be configured to utilize the known location of the sensor and the signal strength of the radio frequency signal to determine the location of the tag and thus the object within the facility.

An example method of determining geolocations of objects based on information retrieved from heterogeneous data sources comprises: receiving, from a first data source associated with an object by an ontology-defined relationship, a first dataset including a first data item specifying a first time identifier and a first geolocation associated with the object; receiving, from a second data source associated with an object by an ontology-defined relationship, a second dataset including a second data item specifying a second time identifier and a second geolocation associated with the object; and determining, by applying a rule set associated with the ontology to the first dataset and the second dataset, a geolocation of the object and a corresponding time identifier.

Provided is a position estimation method for a stationary radio device, the method including: calculating a first similarity between a first fingerprint measured by the stationary radio device at a first timing and a second fingerprint measured by a mobile radio device at a second timing and transmitted from the mobile radio device; receiving, from another stationary radio device, a second similarity between a third fingerprint measured by the other stationary radio device at the first timing and the second fingerprint; and determining, a position of the mobile radio device based on a comparison result between the first similarity and the second similarity.

A system and method for identifying a person's location at a school, hotel, office, business, restaurant or other venue and tracking the movements of that person during their visit to the venue. One or more wireless virtual beacons communicate with the person's electronic device. The virtual beacons provide the system with real-time data about the person's whereabouts, allowing for the confirmation and tracking of the person at the location. A first non-limiting example of use, include a company that provides food and beverage allowing the person to place an order for food and beverages on their electronic device and having the order delivered to the person at their current location as determined by the system. Another non-limiting example includes a company performing analytics on the time and movement of it's employees and customers.

A method of identifying item selection by a user, the method comprising: receiving signals at a receiver of a fixed terminal from a transmitter of a mobile terminal associated with the user, generating a signature at the receiver of the fixed terminal of the movement of the user based on changes in the signals received from the transmitter, matching the signature with prior stored movement information to determine the movement of the user, and identifying the item being selected by the user based on the determined movement of the user.

An apparatus including multiple antennas and means for converting measurements of time of arrival of a positioning reference signal at the multiple antennas to a compensation value and using the compensation value to produce a compensated time of arrival measurement for the positioning reference signal. The apparatus also includes means for providing compensated time of arrival measurements for a plurality of positioning reference signals from different reference points to enable positioning of the apparatus.

Methods, apparatus, systems, and articles of manufacture are disclosed to locate persons based on adjustable signal strength thresholds. Example instructions cause processor circuitry to at least collect monitoring area information for a monitoring environment. Example instructions additionally cause the processor circuitry to determine, based on the monitoring area information, one or more one or more signal strength thresholds to set for one or more radio frequency (RF) beacons deployed to the monitoring environment. In some examples, example instructions cause the processor circuitry to, after reception of monitoring information from one or more devices in the monitoring environment, process the monitoring information and the one or more signal strength thresholds to determine one or more locations of the one or more devices in the monitoring environment.