The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 28, 2021
Filed:
Jun. 23, 2016
Qualcomm Incorporated, San Diego, CA (US);
Carlos Horacio Aldana, Mountain View, CA (US);
Jeff Smith, San Jose, CA (US);
Xiaoxin Zhang, Fremont, CA (US);
Chia-Hui Lin, San Jose, CA (US);
Yen-Feng Lee, San Jose, CA (US);
Ravi Gidvani, Fremont, CA (US);
Alecsander Eitan, Haifa, IL;
Rahul Malik, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Disclosed embodiments facilitate wireless channel calibration, including ranging and direction finding, between wirelessly networked devices. In some embodiments. a method on a first station (STA) may comprise: transmitting a first NDPA frame to one or more second stations (STAs), the first NDPA frame comprising a first bit indicating that one or more subsequent frames comprise ranging or angular information; and transmitting, after a Short Interval Frame Space (SIFS) time interval, a second frame. The second frame may be one of: a Null Data Packet az (NDP_az) frame with information about a time of transmission of the NDP_az frame, or a Null Data Packet (NDP) frame, or a Beam Refinement Protocol (BRP) frame. The first NDPA frame may be unicast, multicast, or broadcast.