Various embodiments relate to the generation and/or use of a positioning map comprising instances of neighbor-cell information that each comprising, are associated with, and/or indexed by a respective globally unique identifier. In an example embodiment, a processor determines a locally unique identifier and an estimated location of an observed neighbor cell. The processor defines a globally unique identifier for the neighbor cell comprising the locally unique identifier and an indication of the estimated location of the neighbor cell. The processor generates a positioning map to include an instance of neighbor-cell information corresponding to the neighbor cell. The instance of neighbor-cell information comprises, is associated with, and/or is indexed by the defined globally unique identifier. The instance of neighbor-cell information may be accessed via an observed locally unique identifier when determining a position estimate for a computing entity that observed a neighbor cell corresponding to the observed locally unique identifier.

A signal transmitted from a mobile device is received at an antenna array of a device. Motion information of the mobile device is received from a sensor of the mobile device. A change in the AoA of the signal is computed when the mobile device moves from a first position to a second position. The location of the mobile device relative to the antenna array is determined based on the change in AoA of the signal and the motion information of the mobile device.

An electronic patient monitoring system and method of operation that includes one or more generally non-metal, tamper-resistant patient identification and monitoring devices, an observer transmitter/receiver device configured to receive and detect one or more beacon signals that exceed a predetermined threshold from at least one of the not easily removable patient identification and monitoring devices, set a time to hold open a window for a response on the transmitter/receiver device, and send a request for information to the observer with the transmitter/receiver device, and a central computer system. Each of the transmitter/receiver device and the central computer system, including, at least, a computer processor, communications components and system software to communicate with the observer transmitter/receiver device at specified/predetermined time intervals to receive observer- and patient-specific information.

The present disclosure relates to methods and apparatus for accurately calculating time with a Miniature Atomic Clock along with other components that can receive process and communicate information to enable locating, identifying, and tracking physical Assets and data contained within the Assets. More specifically, the present disclosure presents a Global Resource Locating (GRL) device and service that may be adhered or inserted in the Asset, which may be built in or attached to a second Asset, wherein the device may comprise a receiver and a trilateration mechanism. In some aspects, the Asset may comprise a product, organism, produce, or component of a logistics based operational process and marketing based Asset movement and usage analysis.

A system and method are provided for detecting direction of movement. The system includes at least two radio frequency identification (RFID) readers arranged in different locations. The RFID readers transmit respective location signals from their locations and receive corresponding response signals from a portable electronic device (PED) when the PED is within range to receive the corresponding location signals, respectively. The system includes a controller configured to determine whether the individual response signals received by the RFID readers respectively satisfy a predetermined condition at a first time and a second time subsequent to the first time. The controller is also configured to determine a direction of movement of the portable electronic device relative to the locations of the RFID readers during the first and second times based on whether the response signals respectively satisfy the predetermined condition at the first and second times.

The present invention relates to a system and a method for refined zoning via intersection. Specifically, anchor nodes (200) of a zone-based positioning system are divided into multiple hyper zones (40, 50) in different ways, where the different ways of dividing the hyper zones may be orthogonal to each other, with possibly partial overlapping. For each way of dividing the hyper zones (40, 50), the most likely candidate hyper zone is selected based on a user zoning method. Thereafter, the intersection (42) of the identified hyper zones is taken as the final location result of a mobile node to be located.

A system and method for obtaining location data for a portable device relative to an object. The system and method may include an object device disposed in a fixed position relative to the object, the object device having an antenna configured to communicate wirelessly via UWB with the portable device via a communication link. The system may include a control system, such as a robot and/or a remote controller, configured to obtain one or more samples pertaining to communications between the portable device and the object device.

A small-sized state calculating device which may acquire a highly-precise state calculation value is provided. The state calculating device may include antennas, receiving parts, a phase difference calculating part and an operation part. The receiving parts may calculate carrier phase measurements PY.sub.A, PY.sub.B and PY.sub.C of GNSS signals received by the antennas, respectively. The phase difference calculating part may set the antennas to be switched between a master antenna and a slave antenna, and calculate the plurality of inter-antenna phase differences Δζ.sub.AB, Δζ.sub.BC and Δζ.sub.CA, for every combination of the master antenna and the slave antenna, using the carrier phase measurements PY.sub.A, PY.sub.B and PY.sub.C. The operation part may calculate an attitude angle AT using the plurality of inter-antenna phase differences Δζ.sub.AB, Δζ.sub.BC and Δζ.sub.CA.

Systems and methods including mobile devices determining their locations using location determination units, such as GPS receivers. Locations of the mobile devices and predefined locations/regions that have been visited by the mobile devices during a period of time are efficiently organized into a location graph that identifies the neighbors of predefined locations, distances to neighbors, and visitation counts of mobile devices to the predefined locations during the period of time. Keyword values for keywords representing user attributes are assigned to mobile devices and the predefined locations. Based on the location graph, the keyword values are propagated via the location graph, from neighbors to predefined locations, from mobile devices to predefined locations, and from predefined locations to mobile devices, to incrementally improve the accuracy of the keyword values over a number of time periods.

Methods and systems are for managing congestion in a network of devices are disclosed. A method may comprise identifying one or more battery-operated devices. A signal-to-noise ratio (SNR) and a signal-to-interference ratio (SIR) for each battery-operated device may be determined. Based on the SNR and SIR of each battery-operated device, a battery loss using clear channel assessment (CCA) and a battery savings using CCA may be determined. A total battery savings may be compared to a total battery loss to determine that the total battery savings is greater than the total battery loss. Based on the determination that the total battery savings is greater than the total battery loss, a noise may be generated to block transmission from the one or more battery-operated devices.