Sr Technologies, Inc.

Joaquin Prendes

Mark Passler

Nikolaos Glantzis

Graham K Smith

Steven M Romanow

Alexander Vallejo

Ryan Busser

A method and Bluetooth mobile device are disclosed for geo-locating a plurality of target Bluetooth devices. In some embodiments, a method includes distinguishing between time delays associated with received response packets from different target Bluetooth devices based at least in part on Access Codes derived from unique lower address part (LAP) of the received response packets; and determining a location for each of the target Bluetooth devices based at least in part on the time delay associated with the response packet received from the target Bluetooth device.

Identification and location of multiple personal area network devices

A method and apparatus for measuring the angle of arrival AOA of Classic Bluetooth Basic Rate (BR) packets, using a switched beam antenna SBA is described. Paging packets are transmitted and wide antenna beams, quadrants, are selected in turn until the paging response is received. After transmitting the synchronization packet and the temporary connection is established, narrow antenna beams are selected, in sequences and the average signal strength for each beam is recorded, for each sequence. The beam with the highest signal strength is returned as the AOA. Based upon which beam recorded the highest signal strength, the next sequence of antenna beams is selected.

Angle of arrival of personal area network devices using a switched beam antenna

A method implemented in a first wireless device is described. The method includes transmitting a plurality of paging requests, receiving a first plurality of bit streams, and performing a first correlation, during a reception window, of each bit stream. When a correlation threshold is exceeded, a synchronization packet is transmitted, a bit stream received, and a second correlation performed. When a third time difference between a first time difference and a second time difference is within a predetermined time difference range, a plurality of poll packets is transmitted, a second plurality of bit streams received, and a third correlation is performed of each bit stream of the second plurality of bit streams with a second expected bit stream. The method further includes determining a correlation time of a maximum correlation value of each poll packet and determining the plurality of RTTs corresponding to the plurality of poll pockets.

Active geo-location for personal area network devices using correlation

Drinking cup with dome chamber

A method, device and system are disclosed for geo-locating a device. In one embodiment, a first wireless transmitter/receiver pages a second wireless transmitter/receiver to establish a communication. A plurality of packets transmitted by the first wireless transmitter/receiver and transmitted by the second wireless transmitter/receiver are received by a wireless receiver. The reception time of packets transmitted by the first wireless transmitter/receiver and the second wireless transmitter/receiver is recorded. A time delay based at least in part on the recorded reception times of each packet is calculated, and a location of the second wireless device based on the calculated time delay is determined. A target location of the second wireless transmitter/receiver is determined based on a plurality of the determined locations of the second wireless transmitter/receiver.

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Plantation, FL, United States of America

Joaquin Prendes