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:
Mar. 10, 2026

Filed:

Apr. 13, 2023
Applicant:

Cisco Technology, Inc., San Jose, CA (US);

Inventors:

Samer M Salam, Beirut, LB;

Matt Silverman, Shaker Heights, OH (US);

Taha Hajar, Chavannes-Renens, CH;

Salvatore Valenza, Pomy, CH;

Evgeny Yankevich, Beachwood, OH (US);

Assignee:

Cisco Technology, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 16/18 (2009.01); G01S 5/02 (2010.01); H04B 17/327 (2015.01);
U.S. Cl.
CPC ...
G01S 5/02528 (2020.05); H04B 17/327 (2015.01); H04W 16/18 (2013.01);
Abstract

A method includes determining a 2D DEM for a physical environment, determining a viewshed for an access point in the physical environment using the DEM, and identifying, at the end terminal, at least one obstacle that is visible from the access point. For each point in space within the physical environment that is on a same side of the at least one obstacle as the access point: a respective first RSSI is determined, the respective first RSSI being associated with a direct LOS ray from the access point to a point in the space. A respective second RSSI for each of the at least one obstacle is determined to yield at least one second RSSI. A respective RF power based on the respective first RSSI and the at least one second RSSI is also determined, the respective RF power being used for generating a 3D heatmap for the physical environment.


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