Device-free activity identification using fine-grained WiFi signatures

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United States of America Patent

PATENT NO 11425214
APP PUB NO 20210250420A1
SERIAL NO

17219781

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Abstract

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A system includes a device that is disposed within an environment and is adapted to communicate over a radio frequency communication link. The system also includes a wireless access point disposed within the environment, including a wireless transceiver in communication with the device over a radio frequency communication link using a plurality of channels, and recording a channel state information data set for the radio frequency communication link. The system also includes a monitoring device including a memory storing a plurality of activity profiles, each of which includes an activity and a channel state information profile corresponding to the activity, and a processor receiving, from the wireless access point, the channel state information data set and determining, based on a comparison of the channel state information data set to the channel state information profile of each of the plurality of activity profiles, the activity of the person in the environment.

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Patent Owner(s)

  • THE TRUSTEES OF THE STEVENS INSTITUTE OF TECHNOLOGY; BOARD OF TRUSTEES RUTGERS THE STATE UNIVERSITY OF NEW JERSEY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Yingying Morganville, US 35 175
Gruteser, Marco Princeton, US 25 229
Liu, Jian Jersey City, US 602 5185
Wang, Yan Jersey City, US 1053 6488
Yang, Jie Tallahassee, US 503 3123

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