Protection of ranging sounding signals from physical level attacks
First Claim
1. A method for wireless communication by a first wireless communication device, comprising:
- generating a long training field of a sounding training signal by applying a set of phase rotations to respective tones based on encoding information;
transmitting an indication to a second wireless communication device that is usable by the second wireless communication device to determine the long training field based on the encoding information; and
transmitting the sounding training signal including the long training field to the second wireless communication device.
1 Assignment
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Accused Products
Abstract
Generally, the described techniques provide for protection mechanisms for sounding training signals transmitted between wireless devices when performing ranging sounding estimation. For example, sounding training signals may be encoded to include a sequence of phase rotations or cyclic shifts to protect the sounding training signal from peer devices. In some cases, encoding information associated with a long training field (LTF) may be transmitted either before or after the LTF is transmitted. Additionally or alternatively, a time delay may be introduced to the sounding training signal, where timing information may be removed from one or more fields of the sounding training signal and the time delay may be appended to an interframe spacing. Alternatively, a frame may be split into multiple frames with the sounding training signal in a first frame, and timing information in a second frame that is offset in time from the first frame.
8 Citations
24 Claims
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1. A method for wireless communication by a first wireless communication device, comprising:
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generating a long training field of a sounding training signal by applying a set of phase rotations to respective tones based on encoding information; transmitting an indication to a second wireless communication device that is usable by the second wireless communication device to determine the long training field based on the encoding information; and transmitting the sounding training signal including the long training field to the second wireless communication device. - View Dependent Claims (2, 3, 4, 5)
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6. A method for wireless communication by a first wireless communication device, comprising:
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receiving an indication from a second wireless communication device that indicates encoding information; determining a set of phase rotations for respective tones of a long training field based on the indication and the encoding information; receiving a sounding training signal including the long training field from the second wireless communication device; applying the set of phase rotations to respective tones of the received long training field; and performing a ranging sounding estimation based at least in part on the long training field after the application of the set of phase rotations. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A wireless communication device, comprising:
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one or more processors configured to generate a long training field of a sounding training signal by applying a set of phase rotations to respective tones based on encoding information; and one or more transceivers configured to; transmit an indication to a second wireless communication device that is usable by the second wireless communication device to determine the long training field based on the encoding information, and transmit the sounding training signal including the long training field to the second wireless communication device. - View Dependent Claims (14, 15, 16, 17)
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18. A wireless communication device, comprising:
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one or more transceivers configured to; receive an indication from a second wireless communication device that indicates encoding information, and receive a sounding training signal including the long training field from the second wireless communication device; and one or more processors configured to; determine a set of phase rotations for respective tones of the long training field based on the indication and the encoding information; apply the set of phase rotations to respective tones of the received long training field, and perform a ranging sounding estimation based at least in part on the long training field after the application of the set of phase rotations. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification