Localization of Backscatter Devices

Abstract: existing localization techniques for passive ambient backscatter devices may not be sufficient to perform accurate location detection, tracking, or providing location updates of the backscatter devices. to address this, devices and methods, and processes that facilitate improved localization of the backscatter devices are described herein. a network device in a network transmits a tone sequence to excite a backscatter device. at least one peer network device of a set of peer network devices communicatively coupled to the network device determines one or more phase difference values between the transmitted tone sequence received by the at least one peer network device and a reflected tone sequence received at the at least one peer network device from the excited backscatter device. the network device receives the one or more phase difference values and determines a location of the backscatter device.

Inventor(s): Matthew Silverman, Ardalan Alizadeh, Peiman Amini, Jerome Henry, Sivadeep R. Kalavakuru

CPC Classification: G01S13/225 (RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES)

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