DETECTING SOUNDING SEQUENCES IN PACKET EXTENSIONS

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United States of America Patent

SERIAL NO

15643188

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Abstract

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This disclosure provides systems, methods and apparatuses for detecting a presence of long training fields (LTFs) in packet extensions of high-efficiency (HE) packets. An apparatus requests a length of packet extensions to be used for a ranging operation. The apparatus receives an HE packet including a packet extension containing a selected number of LTFs based at least in part on the requested packet extension length. The apparatus performs the ranging operation based on a determination that the packet extension contains LTFs. In some aspects, the apparatus detects a presence of LTFs in the packet extension based on a bit provided in the HE packet. In some other aspects, the apparatus detects a presence of LTFs in the packet extension by extracting sequences from the packet extension.

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Patent Owner(s)

Patent OwnerAddress
QUALCOMM INCORPORATED5775 MOREHOUSE DRIVE SAN DIEGO CA 92121-1714

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cho, James Mountain View, US 31 417
Kim, Youhan San Jose, US 145 1219
Malik, Rahul San Diego, US 111 2499
Zhang, Ning Saratoga, US 524 4883
Zhang, Xiaoxin Sunnyvale, US 156 1192

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