Secure channel state information with adaptive obfuscation
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United States of America
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Apr 19, 2022
Grant Date -
Oct 29, 2020
app pub date -
Mar 4, 2020
filing date -
Mar 4, 2020
priority date (Note) -
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Abstract
A privacy-enhancing wireless communication method for use by a transmitting wireless device having a first location, the method comprising: obtaining a frame preamble using a transceiver device at a location, wherein the frame preamble includes a predetermined pattern and wherein movement information corresponding to the location is detectable based on channel state information of the transceiver device in accordance with the pre-determined pattern; modifying the predetermined pattern of the frame preamble to include amplitude or phase distortion; and masking the movement information by transmitting, using the transceiver device, a frame including the frame preamble with the modified predetermined pattern.
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