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.

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.

A method, apparatus and computer-readable storage medium are provided that maintain a database including information identifying of one or more mobile devices. Each mobile device of the one or more mobile devices is configured to enable positioning based on radio signals. The positioning enabled by the respective mobile device is considered to be at least partially unexpected.

A measurement arrangement has a first satellite-based measurement facility, which works on the basis of signals of a first global satellite positioning system, for generating a first measured value, which indicates a location or a speed of the first measurement facility, and a measured value-based first accuracy value indicating the accuracy of the first measured value. A second satellite-based measurement facility is present, which works on the basis of signals of a second, different global satellite positioning system and serves for generating a second measured value, which indicates the location or the speed of the second measurement facility, and a second measured value-based accuracy value, which indicates the accuracy of the second measured value. The first and second satellite-based measurement facilities are connected to an evaluation facility, which carries out a plausibility check using the measured values and generates an error signal if the plausibility check delivers an implausible result.

There is described a method of determining a time of arrival of a signal at a UWB ranging device comprising a first antenna, the signal being transmitted by another UWB ranging device, the method comprising: determining a first channel impulse response based on at least a part of the signal received at the first antenna; determining a first time value as an earliest point in time at which the amplitude of the first channel impulse response exhibits a peak value; setting a candidate time value to the first time value; determining a first upper value as the amplitude of the first channel impulse response at a time value corresponding to the candidate time value plus a predetermined upper time value; determining a second upper value as the peak value plus a predetermined upper amplitude value; determining a first lower value as the amplitude of the first channel impulse response at a time value corresponding to the candidate time value minus a predetermined lower time value; determining a second lower value as the peak value minus a predetermined lower amplitude value; determining, as a first condition, whether the first upper value is larger than the second upper value; determining, as a second condition, whether the first lower value is smaller than the second lower value; and if at least one of the first condition and the second condition is not fulfilled, setting the time of arrival to the candidate time value. Furthermore, a UWB ranging device and a UWB system are described.

A responder user equipment (UE) in separate ranging sessions may determine whether there is a collision between the ranging signals assigned to broadcast in the separate ranging sessions. A collision in the ranging signals is detected when the ranging signals have the same frequencies and broadcast times, e.g., the broadcast time of one ranging signal is within a predetermined amount of time for the other ranging signal. When a collision in the ranging signals is detected, the responder UE sends a message to the initiator UE indicating the possibility of a collision. Available times for broadcasting the ranging signals may be determined, e.g., by the responder UE or the initiator UE. The initiator UE may initiate a new ranging session based on the available times for broadcasting the ranging signal or may proceed with the ranging session with the possibility that the responder UE will not participate.

Two receivers located within a region of interest that is sufficiently small as compared to a distance to a source of a signal can be considered a “point”. Signals received at that “point” are planar. Accordingly, any difference in the time of arrival of a signal from the source by one receiver as compared to another receiver located within that region stablishes a locus of points representing a distance between the receivers perpendicular to the vector pointing to the source. Using signals from multiple far sources multiple loci on which one receiver must exist as compared to the other receiver can be identified. The convergence of these loci identifies a relative position of one receiver from the other, and when the geospatial position of one receiver is known, so too is the position of the other receiver.

Embodiments described herein provide for system and methods to crowdsource the location of wireless devices and accessories that lack a connection to a wide area network. One embodiment provides for a data processing system configured to perform operations comprising loading a user interface on an electronic device, the user interface to enable the determination of a location of a wireless accessory that is associated with the electronic device, generating a set of public keys included within a signal broadcast by the wireless accessory, the signal broadcast during a first period, sending the set of public keys to a server with a request to return data that corresponds with a public key in the set of public keys, decrypting the location data using a private key associated with the public key, and processing the location data to determine a probable location for the wireless accessory.

Methods and systems for identifying device positions include measuring radio signal strength information between devices. Inertial information is measured for the devices. The radio signal strength information and the inertial information are fused to determine relative locations between the devices. The relative locations are oriented to a fixed anchor node. Elevation is estimated for the plurality of devices using pressure sensor information.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to another UE, a positioning request associated with a procedure for determining a position of the UE, wherein the positioning request comprises a first sidelink communication between a first sidelink location management component (S-LMC) of the UE and a second S-LMC of the other UE, wherein the first S-LMC and the second S-LMC comprise sub-functions associated with a vehicle-to-everything protocol layer; receive, from the other UE, a second sidelink communication associated with the procedure for determining the position of the UE; and determine the position of the UE based at least in part on the second sidelink communication. Numerous other aspects are provided.