A communication apparatus detects a wireless device and calculates a relative position of the detected wireless device with respect to a reference wireless device to be a reference in identifying a position based on a movement amount of the communication apparatus from when the reference wireless device is detected by the communication apparatus. The communication apparatus associates the calculated relative position, identification information about the detected wireless device, and identification information about the reference wireless device.

A data interaction method includes: acquiring UWB positioning signals transmitted by at least three UWB positioning base stations, where one of the at least three UWB positioning base stations is a reference positioning base station; and determining a relative position of the mobile terminal with respect to the reference positioning base station based on the UWB positioning signals.

The present document provides a method by which first vehicle-to-X (V2X) user equipment (UE) for supporting distance measurement transmits a ranging response signal in a wireless communication system, the method comprising: receiving a ranging request signal from second V2X UE; and transmitting, to the second V2X UE, the ranging response signal as a response to the ranging request signal on the basis of distance measurement parameter information, wherein the distance measurement parameter information includes information on a cyclic prefix (CP) length used for the ranging response signal, and the CP length used for the ranging response signal is different from a CP length to be used in V2X data channel transmission.

A vehicle system may include a plurality of wireless transmitters carried by a vehicle and configured to transmit wireless signals, at least one indicator carried by the vehicle, and a portable device moveable relative to the vehicle and configured to receive the wireless signals from the plurality of wireless transmitters. The system may further include a controller carried by the vehicle and configured to wirelessly communicate with the portable device, and determine a predicted zone the portable device is located in adjacent to the vehicle based upon the received wireless signals, with the predicted zone being one of a plurality of different zones adjacent the vehicle having respective vehicle functions associated therewith. The controller may be further configured to cause the at least one indicator to provide an indication that the portable device has entered the predicted zone, and enable the respective vehicle function associated with the predicted zone.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for identifying, at a monitoring system, a location of a device panel, the device panel being configured to communicate with a position module of the monitoring system; obtaining, by the position module, location information for a plurality of anchor devices, each anchor device of the plurality of anchor devices being located within a predefined area of a property; determining, by the position module, a respective location of each anchor device within the predefined area based on analysis of the location information for the plurality of anchor devices; and determining, by the position module, a location for a sensor in the predefined area based on the respective location of at least one anchor device.

Systems and methods allow for floor plan generation for device visualization and use. For example, image data may be utilized to segment a building from non-building elements in an image, and the outline of the building may be utilized to generate a floor plan of the building. A user interface may be generated to present the floor plan and allow for placement of representations of walls, doors, windows, and electronic devices within the floor plan. Placement of these elements may be performed in response to input from a user and/or may be performed automatically utilizing naming indicators, device-affinity data, historical usage data, signal-strength data, etc. Once placed, the device representations may be utilized to operate the devices and display related information, such as alerts.

There is provided a method and apparatus for tracking a device. The tracked device may be a wearable device worn by a user participating in an athletic activity. An anchor device is positioned with respect to a playing area and receives signals from the tracked device. The anchor device estimates the position of the tracked device by measuring a distance and direction of the signal, and decodes the signal to obtain measurements taken by the tracked device. The position and the measurements are combined to produce tracking data for the device.

A vehicle, hitch, and articulating trailer include vehicle to vehicle and infrastructure communications and vehicle computing systems, which have a controller coupled to and/or including one or more of a dynamics measurement unit, a transceiver, and a position sensor, among other components. The controller(s) are configured to, in response to detecting positions of trailer corners from the position sensor, generate vehicle and trailer relative orientation and navigation data including location, velocity, and orientation, utilizing vehicle and trailer electronic polyhedrons articulating about a hitch point and representing the combination vehicle and trailer predicted path and envelopes. In response to detected trailer movement relative to the hitch point, the generated articulated polyhedrons are generated with the navigation data, which includes the location, speed, and orientation, which are in turn communicated to nearby vehicles and roadway infrastructure. Initial trailer vertices may be generated with wireless and mobile devices to generate the trailer polyhedron.

In a multilateration system based on an absolute distance measurement and a multilateration method using the multilateration system, the multilateration system is configured to obtain spatial coordinates of an object moving in a space. The system includes a tracking unit having a plurality of tracking devices, and a control calculation part having a dead path estimation part and a tracking device position calculation part. The tracking devices are positioned differently with each other and each of the tracking devices measures a distance to the object. The dead path estimation part is configured to pre-estimate a dead path which is a distance between a measurement reference surface of each tracking device and a central position of each tracking device. The tracking device position calculation part is configured to calculate the central position of each tracking device via nonlinear optimization.

In an embodiment a method includes emitting at least one group of at least N+1 mutually temporally asynchronous synchronization signals from at least N+1 fixed emitting locations in a space, receiving the synchronization signals of the group by a mobile device and at at least one fixed receiving location in the space, determining a reception moment of each synchronization signal of the at least one group by the mobile device in a time base specific to the mobile device, determining a reception moment of the synchronization signals of the at least one group at the at least one receiving location in a time base specific to each receiving location, and determining a position of the mobile device in the space at a given moment based on the reception moments determined at the at least one receiving location, the reception moments determined by the mobile device, coordinates of the emitting locations in the space and a distance between each emitting location and the at least one receiving location.