According to one embodiment, an electronic apparatus includes a processor. The processor is configured to acquire position information indicating first and second installation positions of a plurality of pieces of equipment receive characteristic information of a first piece of equipment obtained from a first propagation characteristic and a second propagation characteristic, and characteristic information of a second piece of equipment obtained from a third propagation characteristic and a fourth propagation characteristic. The processor is configured to estimate a position where each of the first and second pieces of equipment is installed, based on the position information, and the characteristic information of the first and the second piece of equipment.

In one embodiment, a service obtains spatial information regarding a physical area. The service estimates locations of a device within the physical area over time, based on wireless signals sent by the device. The service generates a set of images based on the spatial information regarding the physical area and on the estimated locations of the device within the physical area over time. The service updates an estimated location of the device by inputting the generated set of images to a machine learning model trained to minimize a location estimation error.

A method includes obtaining a moving track shape of a second device that is presented before and after a wireless communication connection between the second device and the first device is broken, and a moving track of the second device presented before the wireless communication coupling between the second device and the first device is broken, and matching the moving track shape of the second device presented before and after the wireless communication connection between the second device and the first device is broken and the moving track of the second device presented before the wireless communication connection between the second device and the first device is broken to determine a moving track of the second device presented after the wireless communication connection between the second device and the first device is broken.

A position determination system determines a position of a mobile terminal relative to a vehicle by a wireless communication. The position determination system includes: a communication device disposed in a vehicle compartment and configured to receive a wireless signal transmitted from the mobile terminal and detect a reception strength of the received wireless signal. The position determination system is configured to: determine whether the mobile terminal is existing in the vehicle compartment; estimate an amount of absorbers that exists in the vehicle compartment and may absorb radio waves having a frequency used for the wireless communication; adjust an inside determination value which is used as a threshold for determining that the mobile terminal is existing in the vehicle compartment; and determine that the mobile terminal is existing in the vehicle compartment in response to the inside device strength being equal to or greater than the inside determination value.

A tire pressure monitoring system used for a vehicle includes a sensor unit, a receiving device, and a control device. The sensor unit is provided at each wheel of the vehicle, detects tire pressure of the each wheel with a tire pressure sensor and transmits data of the detected tire pressure by radio waves. The receiving device includes a receiving antenna that is provided at an outside of the vehicle to receive the data of the tire pressure transmitted from the sensor unit. The control device includes a data acquisition unit that acquires the data of the tire pressure received by the receiving device.

Determining if a receiver is inside or outside a building or area. Particular systems and methods for determining if a receiver is inside or outside a building determine an estimate of a position of a receiver, and use the estimate of the position of the receiver and other data to determine if the position of the receiver is inside a first building. The other data may include locations of geo-fences inside buildings, heights of buildings, or other types of data.

A position determination system includes communication units that are arranged on the communication subject and perform wireless communication with a terminal, and a position determination unit arranged on the communication subject. The position determination unit obtains received signal strength indicator data of radio waves transmitted on different frequencies between the terminal and each communication unit and determines the position of the terminal relative to the communication subject from the obtained received signal strength indicator data. The received signal strength indicator data is obtained for each communication unit and indicates the received signal strength indicator of each radio wave measured for each frequency. The communication units are respectively arranged on the communication subject in two divided sections obtained by dividing the communication subject along a reference line extending across the communication subject.

Methods, apparatuses, systems, and computer program products for wheel theft detection and notification using a tire pressure monitoring system (TPMS) are disclosed. In a particular embodiment, wheel theft detection and notification using a TPMS includes monitoring, by an electronic control unit (ECU) of a vehicle, one or more parameters associated with a tire monitoring sensor (TMS) coupled to a wheel assembly of the vehicle. In this embodiment, the ECU determines, based on the monitored one or more parameters, that the wheel assembly is in a compromised state associated with the wheel assembly being dislocated from the vehicle or in danger of being dislocated from the vehicle. In response to determining that the wheel assembly is in the compromised state, the ECU triggers an alarm of a vehicle security system.

A conveyor installation (100) includes conveyor sections (111), at least one switch (1111) for switching between the conveyor sections (111), a multiplicity of transportation units (110), which extend along the conveyor sections (111), a radio system (101) for spatially tracking the transportation units (110), and a control unit for controlling the conveyor system. (100), the radio system (101) including radio modules (1013) each assigned to a transportation unit (110) and at least one stationary radio device (1011), which are configured for exchanging radio signals, and a processing unit (109), wherein the processing unit (109) is configured to process the radio signals from the radio signals, and the current position of the transportation units (110) along the conveyor sections (111).

There is disclosed a system for locating an object on a surface waveguide. The surface waveguide is made of one or more 1D wires and/or 2D waveguides comprising conductive elements arranged in patterns. Emitters with known positions can couple with receivers coupled with the surface waveguide. The position of receivers can be determined, for example by multilateration or signal strength indication. Conductive elements can be sprayed or sewed or otherwise deposited onto surfaces such as a ground floor, a sidewalk or a road lane. Described developments comprise the use of absorbers, protective layers, unidirectional emitters, contactless coupling, and various arrangements comprising frequency-selective layers, arrangements in lattices, trellis or anisotropic surfaces. Signal processing aspects and software embodiments are also described.