Accurate position capability can be quickly provided using a Wireless Local Area Network (WLAN). When associated with a WLAN, a wireless device can quickly determine its relative and/or coordinate position based on information provided by an access point in the WLAN. Before a wireless device disassociates with the access point, the WLAN can periodically provide time, location, and decoded GPS data to the wireless device. In this manner, the wireless device can significantly reduce the time to acquire the necessary GPS satellite data (i.e. on the order if seconds instead of minutes) to determine its coordinate position.

Accurate position capability can be quickly provided using a Wireless Local Area Network (WLAN). When associated with a WLAN, a wireless device can quickly determine its relative and/or coordinate position based on information provided by an access point in the WLAN. Before a wireless device disassociates with the access point, the WLAN can periodically provide time, location, and decoded GPS data to the wireless device. In this manner, the wireless device can significantly reduce the time to acquire the necessary GPS satellite data (i.e. on the order if seconds instead of minutes) to determine its coordinate position.

A method for autonomous parking of a vehicle includes requesting initiation of an autonomous parking routine; determining the location of a vehicle user of the vehicle comprising the steps of: (a) transmitting a signal by one of an electronic device in the immediate vicinity of the vehicle user and a vehicle transceiver; (b) receiving the signal by the other of the electronic device in the immediate vicinity of the vehicle user and the vehicle transceiver; (c) measuring the strength of the received signal; (d) determining a distance between the electronic device and transceiver based on the strength of the received signal; (e) correlating the distance between the electronic device and transceiver as the distance that the vehicle user is from the vehicle; and initiating the autonomous parking routine only if the vehicle user is determined to be within the vehicle or beyond a predetermined distance from the vehicle.

A method for autonomous parking of a vehicle includes requesting initiation of an autonomous parking routine; determining the location of a vehicle user of the vehicle comprising the steps of: (a) transmitting a signal by one of an electronic device in the immediate vicinity of the vehicle user and a vehicle transceiver; (b) receiving the signal by the other of the electronic device in the immediate vicinity of the vehicle user and the vehicle transceiver; (c) measuring the strength of the received signal; (d) determining a distance between the electronic device and transceiver based on the strength of the received signal; (e) correlating the distance between the electronic device and transceiver as the distance that the vehicle user is from the vehicle; and initiating the autonomous parking routine only if the vehicle user is determined to be within the vehicle or beyond a predetermined distance from the vehicle.

UE location determined by collecting and preprocessing signal data at a detector and sending extracted data to a remote locate server. The detector buffers samples from signals provided by receive channels, detects known reference signals from receive channels based on reference signal parameters, isolates symbols carrying the reference signal from frames, extracts data from symbols, and sends extracted data to locate server. The locate server receives the extracted data, estimates locate observables based on the extracted data and calculates the UE location based on the estimated locate observables, the reference signal parameters and the extracted data. The detector and/or the server may also generate correlation coefficients between reference signals carrying spectrum received from a serving cell and utilize the correlation coefficients to cancel a serving cell signal in symbols that include known in advance reference signals from the serving cell and one or more neighboring cells of the wireless system.

A position specifying device communicable with a transmitter supporting Bluetooth Low Energy (BLE) is provided. The position specifying device includes: a signal receiving unit configured, by using multiple antennas each having different directivity, to receive BLE radio signals transmitted from the transmitter and to measure respective receiving strengths of the BLE radio signals; and a specifying unit configured to specify a position of the transmitter by comparing the respective receiving strengths measured via each of the multiple antennas.

A radar assembly for receiving signals at spaced frequencies from an unknown transmitting source comprising a receiver operative to receive signals; the receiver comprising a series of channels, each channel comprising a low pass filter configured to allow passage of a signal from an unknown transmitting source, an analog to digital converter configured to transform the signal from the unknown transmitting source to a digital signal, a Hilbert transform configured to transform the digital signal from the unknown transmitting source into a single sideband signal, a Fourier transform configured to transform the single sideband signal into a plurality of regularly spaced frequency samples, and an inverse Fourier transform for extracting regularly spaced frequency samples; whereby extracted pulses form a train of pulses that are inputted into an imager which utilizes synthetic aperture radar to form an image of the area of interest containing the unknown transmitting device and method thereof.

A method of direction finding (DF) positioning in a wireless location area network (WLAN) is proposed. A multiple antenna IEEE 802.11 transmitting device can transmit signal preamble containing multiple Long Training Field (LTF) symbols in a radio frame from multiple antennas simultaneously, which allows a receiving device to resolve multiple DF sounding signals transmitted from the multiple antennas. As a result, angle of departure (AoD) of the transmitting device can be estimated by using the multiple resolved DF sounding signals from each antenna for DF positioning purpose.

A method of direction finding (DF) positioning in a wireless location area network (WLAN) is proposed. A multiple antenna IEEE 802.11 transmitting device can transmit signal preamble containing multiple Long Training Field (LTF) symbols in a radio frame from multiple antennas simultaneously, which allows a receiving device to resolve multiple DF sounding signals transmitted from the multiple antennas. As a result, angle of departure (AoD) of the transmitting device can be estimated by using the multiple resolved DF sounding signals from each antenna for DF positioning purpose.

Methods and apparatuses for device location are described. In one example embodiment, an apparatus and method for determining a location of a mobile device is presented using a single narrowband radio system. In one implementation, Bluetooth is utilized. Using the single base operating with the narrowband radio, the location of the mobile device is found by applying both angle determination and distance determination. Using phased array antennas, the angle between receiver and base is determined. The distance is determined using a time-of-flight method based on phase comparison and phase lock loop techniques which can be applied in narrowband radio transceivers.