It is inter-alia disclosed a method for at least partially reconfiguring a radio positioning support system, wherein said radio positioning support system is configured for determining a position of a mobile device at least partially based on a radio positioning support signal transmitted by said mobile device, said method comprising: obtaining a plurality of reference observation reports, wherein each reference observation report of said plurality of reference observation reports is associated with a respective radio positioning support device of a plurality of radio positioning support devices, and wherein each reference observation report of said plurality of reference observation reports represents scanning results from scanning, by said respective radio positioning support device with which said respective reference observation report is associated, for radio reference signals transmitted by other radio positioning support devices of said plurality of radio positioning support devices; determining, based on said plurality of reference observation reports, whether a predetermined radio positioning support criterion is met by said radio positioning support system; and if it is determined that said predetermined radio positioning support criterion is not met by said radio positioning support system, determining reconfiguration information for at least partially reconfiguring said radio positioning support system.

A method for location finding includes detecting a respective phase difference between the received radio signals that are associated with each of the multiple antennas of each of the fixed transceivers. One or more respective angles are computed between each of the fixed transceivers and the mobile transceiver based on the respective phase differences. Location coordinates of the mobile transceiver are found based on the angles and the transmit locations of the transmitters.

Systems and methods for vehicle passive entry/passive start (PEPS) are provided. A communication gateway establishes a Bluetooth low energy communication connection with a portable device. The communication connection has a connection event during which information is exchanged between the communication gateway and the portable device. The communication gateway instructs sensors to perform two-way ranging using impulse radio (IR) ultra-wide band (UWB) communication with the portable device based on the information exchanged during the connection event. A localization module determines a location of the portable device based on the two-way ranging performed by the plurality of sensors. A PEPS system receives the location of the portable device from the localization module and performs a vehicle function, including unlocking a door of the vehicle, unlocking a trunk of the vehicle, or allowing the vehicle to be started, based on the location of the portable device.

Systems and methods for vehicle passive entry/passive start (PEPS) are provided. A communication gateway establishes a Bluetooth low energy communication connection with a portable device. The communication connection has a connection event during which information is exchanged between the communication gateway and the portable device. The communication gateway instructs sensors to perform two-way ranging using impulse radio (IR) ultra-wide band (UWB) communication with the portable device based on the information exchanged during the connection event. A localization module determines a location of the portable device based on the two-way ranging performed by the plurality of sensors. A PEPS system receives the location of the portable device from the localization module and performs a vehicle function, including unlocking a door of the vehicle, unlocking a trunk of the vehicle, or allowing the vehicle to be started, based on the location of the portable device.

A tracking system can provide configuration instructions to an electronic device based on user presence. The tracking system can determine a user's location relative to a geographic boundary surrounding a geographic area associated with the user. Depending on the user's location, the tracking system may send instructions to configure an electronic device to send a notification or change the operating mode of the electronic device in response to the user's presence. The electronic device may be a scanning device that is configured to have a higher or lower scanning frequency, depending on the presence or absence of the user relative to the scanning device.

A tracking system can provide configuration instructions to an electronic device based on user presence. The tracking system can determine a user's location relative to a geographic boundary surrounding a geographic area associated with the user. Depending on the user's location, the tracking system may send instructions to configure an electronic device to send a notification or change the operating mode of the electronic device in response to the user's presence. The electronic device may be a scanning device that is configured to have a higher or lower scanning frequency, depending on the presence or absence of the user relative to the scanning device.

Disclosed is a method and apparatus for estimating a signal source, the method including receiving, in at least one receiving node, a signal emitted from a signal source, extracting a steering matrix corresponding to a virtual antenna array by vectorizing the signal received in the at least one receiving node, and estimating a location of the signal source based on the steering matrix.

Disclosed is a method and apparatus for estimating a signal source, the method including receiving, in at least one receiving node, a signal emitted from a signal source, extracting a steering matrix corresponding to a virtual antenna array by vectorizing the signal received in the at least one receiving node, and estimating a location of the signal source based on the steering matrix.

A geolocationing system and method for providing awareness in a multi-space environment, such as a hospitality environment or educational environment, are presented. In one embodiment of the geolocationing system, a vertical and horizontal array of gateway devices is provided. Each gateway device includes a gateway device identification providing an accurately-known fixed location within the multi-space environment. Each gateway device includes a wireless transceiver that receives a beacon signal from a proximate wireless-enabled personal locator device. The gateway devices, in turn, send gateway signals to a server, which determines estimated location of the wireless-enabled personal location device with angle of arrival modeling.

A radio frequency identification (RFID) system includes an array of antennas to distinguish line-of-sight (LOS) paths from non-line-of-sight (NLOS) paths. The distance between adjacent antennas in the array of antennas is less than half the wavelength of the radio frequency (RF) signal of the system. Each antenna in the antenna array is also digitally controlled to change relative phase difference among the antennas, thereby allowing digital steering of the array of antennas across angles of arrival (AOAs) between 0 and . The digital steering generates a plot of signal amplitudes as a function of AOAs. LOS paths are distinguished from NLOS paths based on the shapes (e.g., depth, gradient, etc.) of local extremes (e.g., maxima or minima) in the plot.