A position detection system 1 identifies position information on the basis of a position signal received from a storage medium 30P disposed in a placement area where a target item is placed, identifies item information on the basis of an item signal received from a storage medium 30Q attached to the target item, and associates the position information with the item information and stores the associated information when the item signal is received during a period of time that starts from a time at which the position information is identified and that does not exceed a predetermined length of time.

A system and method of acquiring and maintaining location information associated with traffic apparatus deployed in connection with a traffic flow monitoring or regulation system are disclosed. In some implementations, an apparatus identifier may distinguish a particular traffic apparatus from others that are deployed in proximity, and a functional identifier may define a functionality of the particular traffic apparatus; positioning, orientation, and movement or acceleration data may also be provided for real-time or near real-time system applications. These apparatus data may be used to derive and to maintain a record of location data associated with each traffic apparatus deployed in a particular application.

A method and system are disclosed that provide integrated detection of spatially distributed events and monitoring of spatially distributed areas. Wireless beacon detection and event reporting by a mobile device are used to provide a management server with location information about events that may require video surveillance. The management server determines if any cameras are appropriate to monitor that location, and directs a camera management server to initiate video surveillance.

Systems, methods, and computer-executable instructions for identifying a convergence of objects includes receiving, at a device, a first beacon from a beacon transmitter located within a first location. A first location is identified based on the first beacon. A second beacon is received that is transmitted from a wearable worn by a patient. The patient associated with the second beacon is identified. A convergence time and a previous convergence time of the patient and device are determined. An out of compliance event based on the current convergence time and the previous convergence time is determined. An alert is generated based on the out of compliance event. The alert includes the first location.

Embodiments herein describe performing AoA resolving to identify a plurality of AoAs corresponding to a multipath signal and then using AP voting to identify a location of the client device. AoA resolving enables an AP to identify the different angles at which a multipath signal reaches the AP. That is, due to reflections, a wireless signal transmitted by a single client device may reach the AP using multiple paths that each has their own AoA. The AP can perform AoA resolving to identify the AoAs for the different paths in a multipath signal. In one embodiment, the AoAs for two APs (or a subset of the APs) can be used to identify cross points or intersection points that represent candidate locations of the client device. A voting module can determine whether those cross points corresponds to AoAs identified by the remaining APs.

In various embodiments, crowd sourcing techniques are provided to determine beacon altitudes that may then be used in 3D positioning of UE. Some techniques may crowd source beacon altitudes based on global navigation satellite system (GNSS) position fixes obtained by UE. Other techniques may crowd source beacon altitudes based on uncalibrated pressure measurements obtained by UE. Still other techniques may combine beacon altitude crowd-sourcing and pressure sensor calibration on UE. Such techniques may make inferences based on line of sight (LOS) between UE and beacons, determined using signal strength, connection status, and/or timing measurement. The techniques may be implemented separately, or as part of a combined system that determines beacon altitudes in diverse manners. Once beacon altitudes are known, that may be used to determine 3D positions of the UE (e.g., by trilateration, multilateration or other positioning techniques).

A method and associated device for locating wireless tags is described. The device comprises and IR transceiver, RF transceiver, thermal camera, and sensor array. The device is configured to emit and receive IR, RF, and BLE signals as well as determine and occupancy and other characteristics of a room the device is located in. In some embodiments, the method of determining the location of one or more wireless tags comprises, determining an occupancy of a room based on the occupancy data of the room. Location data of one or more wireless tags is received, the location data of each wireless tag indicating probabilities that the wireless tag is in a room. The locations of the one or more tags are determined, based on the location data and the occupancy.

A method for locating wireless tags is described. For each room of a plurality of rooms, occupancy data of the room is received from an occupancy sensor in the room. Location data of one or more wireless tags is received. The location data of each wireless tag indicates one or more probabilities that the wireless tag is in at least some of the plurality of rooms. It is determined, based on the location data and the occupancy data, which room of the plurality of rooms each wireless tag of the one or more wireless tags is located in.

Disclosed is a system, method, mobile communication device and one or more computer programs for a monitoring system. In one aspect, the system includes a plurality of transmitters, each transmitter having associated therewith a reflector antenna configured to substantially reflect signal transmission toward a detection area; and a mobile device configured to: receive transmitter signals from at least two transmitters from the plurality of transmitters; and determine that the mobile device is located within the detection area based on received signal strengths of the at least some of the transmitter signals.

Provided is a technology for increasing accuracy of position estimation by estimating a position of a signal source based on an error due to altitudes of a sensor and a signal source and an error due to a pitch of an aircraft as well as an error due to curvature of the earth. At this time, a position estimation method may include receiving measurement data from a plurality of sensors, estimating first position data of the signal source based on the measurement data, identifying an altitude error of the first position data, and estimating second position data that is data obtained by correcting the first position data based on the altitude error.