IP Library › Granted Patent US 12,170,546
Granted Patent B2
US 12,170,546 · App. 18/354,478 · Granted Dec 17, 2024

Simulation of Wi-Fi signal propagation in three-dimensional visualization

Inventors: Stefano Ferrari (le mont sur Lausanne, CH); Salvatore Valenza (Pomy, CH); Samer Salam (Beirut, LB); Taha Hajar (Chavannes-Renens, CH); Nikodin Ristanovic (Lausanne, CH); Arun G. Khanna (Sunnyvale, CA)
Assignee: Cisco Technology, Inc.
H04B17/318G01S13/89H04B17/391
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Quick Facts
Patent No.
US 12,170,546
App. No.
18/354,478
Filed
Jul 18, 2023
Granted
Dec 17, 2024
Kind
B2
Art Unit
2644
USPC
370/329
Abstract

The present disclosure is directed to 3-D visualization of wireless signal propagation representing wireless signal strength and interference in 3-D space. The present technology can identify a plurality of access points (APs) in the 3-D space, determine a wireless signal strength for each of the plurality of APs, and determine an interference with the wireless signal strength of each of the plurality of APs, wherein the interference is caused by a neighboring AP of the plurality of APs in the 3-D space. The present technology can further present a 3-D visualization of a wireless signal propagation pattern representing the wireless signal strength from each of the plurality of APs in the 3-D space and the interference from the neighboring AP.

Claims (39)

1. A method comprising:

projecting a plurality of ray-paths in a plurality of directions within a building;

determining whether one or more of the plurality of ray-paths interface with one or more objects within the building;

segmenting each ray-path of the plurality of ray-paths that interface with the one or more objects into contiguous segments of substantially uniform mediums;

determining a radio frequency (RF) signal strength at one or more points along the segments, wherein the RF signal strength at a first point along a first segment varies from the RF signal strength at a second point along the first segment based at least in part on the substantially uniform mediums the segment is projected; and

calculating an RF propagation pattern based at least on the RF signal strength.

2. The method of claim 1 , wherein the plurality of ray-paths originate from one or more Wi-Fi access points.

3. The method of claim 1 , wherein the plurality of directions include X, Y and Z planes.

4. The method of claim 1 , wherein the one or more objects include building material.

5. The method of claim 4 , wherein the building material is defined by a building plan.

6. The method of claim 1 , further comprising:

rendering a 3-D visualization of the RF propagation pattern.

7. The method of claim 1 , wherein the substantially uniform mediums include at least one of open space, concrete, glass, wood, metal, non-metal, glass, or liquid.

8. The method of claim 1 , wherein the RF signal degrades along the plurality of ray-paths.

9. A system comprising:

at least one processor; and

a memory storing instructions, which when executed by the at least one processor causes the system to:

project a plurality of ray-paths in a plurality of directions within a building;

determine whether one or more of the plurality of ray-paths interface with one or more objects within the building;

segment each ray-path of the plurality of ray-paths that interface with the one or more objects into contiguous segments of substantially uniform mediums;

determine a radio frequency (RF) signal strength at one or more points along the segments, wherein the RF signal strength at a first point along a first segment varies from the RF signal strength at a second point along the first segment based at least in part on the substantially uniform mediums the segment is projected; and

calculate an RF propagation pattern based at least on the RF signal strength.

10. The system of claim 9 , wherein the plurality of ray-paths originate from one or more Wi-Fi access points.

11. The system of claim 9 , wherein the plurality of directions include X, Y and Z planes.

12. The system of claim 9 , wherein the one or more objects include building material.

13. The system of claim 12 , wherein the building material is defined by a building plan.

14. The system of claim 9 , further comprising instructions when executed cause the system to:

render a 3-D visualization of the RF propagation pattern.

15. The system of claim 9 , wherein the substantially uniform mediums include at least one of open space, concrete, glass, wood, metal, non-metal, glass, or liquid.

16. The system of claim 9 , wherein the RF signal degrades along the plurality of ray-paths.

17. A non-transitory computer readable medium storing instructions, which when executed by at least one processor causes the at least one processor to:

project a plurality of ray-paths in a plurality of directions within a building;

determine whether one or more of the plurality of ray-paths interface with one or more objects within the building;

segment each ray-path of the plurality of ray-paths that interface with the one or more objects into contiguous segments of substantially uniform mediums;

determine a radio frequency (RF) signal strength at one or more points along the segments, wherein the RF signal strength at a first point along a first segment varies from the RF signal strength at a second point along the first segment based at least in part on the substantially uniform mediums the segment is projected; and

calculate an RF propagation pattern based at least on the RF signal strength.

18. The non-transitory computer readable medium of claim 17 , wherein the one or more objects include building material.

19. The non-transitory computer readable medium of claim 18 , wherein the building material is defined by a building plan.

20. The non-transitory computer readable medium of claim 17 , further comprising instructions which when executed cause the at least one processor to: render a 3-D visualization of the RF propagation pattern.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 18, 2023
From: FERRARI, STEFANO; VALENZA, SALVATORE; SALAM, SAMER; HAJAR, TAHA; RISTANOVIC, NIKODIN; KHANNA, ARUN G.
To: CISCO TECHNOLOGY, INC.
Reel/Frame 064303/0571 →
Continuity (3)
Continuation 17481767 · Sep 22, 2021
Provisional Application 63224340 · Jul 21, 2021
Related Publication 20230361891A1 · Nov 9, 2023