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.

Date of Patent:
Feb. 17, 2026

Filed:

May. 22, 2023
Applicant:

Marvell Asia Pte Ltd, Singapore, SG;

Inventors:

Liwen Chu, San Ramon, CA (US);

Hongyuan Zhang, Fremont, CA (US);

Hui-Ling Lou, Sunnyvale, CA (US);

Assignee:

Marvell Asia Pte Ltd, Singapore, SG;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 13/76 (2006.01); H04W 84/12 (2009.01);
U.S. Cl.
CPC ...
G01S 13/765 (2013.01); H04W 84/12 (2013.01);
Abstract

A first communication device generates a null data packet announcement (NDPA) frame for use in a ranging measurement exchange session with a second communication device. The NDPA frame includes a station information field corresponding to the second communication device, the station information field having i) an 11-bit association identifier (AID) subfield that includes an identifier of the second communication device, ii) a disambiguation subfield set to a value that prevents a third communication device operating according to a second communication protocol from improperly processing the NDPA frame, and iii) sixteen bits between the AID subfield and the disambiguation subfield. The first communication device transmits the NDPA frame to the second communication device as part of the ranging measurement exchange session. After transmitting the NDPA frame, the first communication device transmits a null data packet (NDP) to the second communication device as part of the ranging measurement exchange session.


Find Patent Forward Citations

Chu, Liwen. (2026). Null data packet announcement frame for ndp ranging (U.S. Patent No. 12554005). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12554005

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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