IP Library › Granted Patent US 12,416,713
Granted Patent B2
US 12,416,713 · App. 17/850,955 · Granted Sep 16, 2025

UWB-based side of door detection for intent analysis

Inventors: Joseph Land (Danville, IN); David Brown (Greenwood, IN); Ryan C. Kincaid (Indianapolis, IN)
Assignee: Schlage Lock Company LLC
G01S13/0209G01S3/48G01S5/04H04B17/318H04W64/00G01S5/0221G01S5/0268G01S5/0284G01S7/006G01S13/765G01S13/88G07C9/00309G07C2209/63
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Quick Facts
Patent No.
US 12,416,713
App. No.
17/850,955
Granted
Sep 16, 2025
Kind
B2
Abstract

A method according to an embodiment includes receiving UWB data indicative of a distance of a mobile device relative to the access control device and a SNR of signals received by a plurality of UWB antennas, inferring a side of the passageway at which the mobile device is located based on the distance of the mobile device relative to the access control device and also based on the SNR of the signals, estimating a travel time of the mobile device to the passageway based on the UWB data if the inferred side of the passageway based on the distance of the mobile device is different from the side of the passageway inferred based on the SNR of the signals, and determining the side of the passageway at which the mobile device is located to be an unsecure side of the passageway if the travel time exceeds a predefined threshold time.

Claims (40)

1. A method, comprising:

receiving, from an ultra wideband (UWB) subsystem of an access control device that secures a passageway, UWB data indicative of a distance of a mobile device relative to the access control device and a signal-to-noise ratio (SNR) of signals received by a plurality of UWB antennas of the UWB subsystem;

inferring, by the access control device, a side of the passageway at which the mobile device is located based on the distance of the mobile device relative to the access control device;

inferring, by the access control device, a side of the passageway at which the mobile device is located based on the SNR of the signals;

estimating, by the access control device, a travel time of the mobile device to the passageway based on the UWB data based on determining that the side of the passageway inferred based on the distance of the mobile device relative to the access control device is different from the side of the passageway inferred based on the SNR of the signals; and

determining, by the access control device, the side of the passageway at which the mobile device is located to be an unsecure side of the passageway based on the travel time exceeding a predefined threshold time.

2. The method of claim 1 , wherein the UWB data includes received signal strength indicator (RSSI) data indicative of the distance of the mobile device relative to the access control device.

3. The method of claim 1 , wherein estimating the travel time of the mobile device to the passageway comprises determining a velocity of the mobile device.

4. The method of claim 1 , wherein estimating the travel time of the mobile device to the passageway comprises determining an angle of arrival of the mobile device.

5. The method of claim 1 , further comprising determining, by the access control device, the side of the passageway at which the mobile device is located to be the unsecure side of the passageway in response to determining that the side of the passageway inferred based on the distance of the mobile device relative to the access control device is the unsecure side and the side of the passageway inferred based on the SNR of the signals is the unsecure side.

6. The method of claim 1 , further comprising determining, by the access control device, the side of the passageway at which the mobile device is located to be a secure side of the passageway in response to determining that the side of the passageway inferred based on the distance of the mobile device relative to the access control device is the secure side and the side of the passageway inferred based on the SNR of the signals is the secure side.

7. The method of claim 1 , further comprising unlocking, by the access control device, a lock mechanism associated with the access control device in response to inferring ingress intent of a user of the mobile device and determining that the mobile device is at the unsecure side of the passageway.

8. An access control device, comprising:

an ultra wideband (UWB) subsystem comprising a plurality of UWB antennas and configured to perform a ranging session with a mobile device and generate UWB data indicative of a distance of the mobile device relative to the access control device and a signal-to-noise ratio (SNR) of signals received by the plurality of UWB antennas;

a processor; and

a memory comprising a plurality of instructions stored thereon that, in response to execution by the processor, causes the processor to:

infer a side of the passageway at which the mobile device is located based on the distance of the mobile device relative to the access control device;

infer a side of the passageway at which the mobile device is located based on the SNR of the signals;

estimate a travel time of the mobile device to the passageway based on the UWB data in response to a determination that the side of the passageway inferred based on the distance of the mobile device relative to the access control device is different from the side of the passageway inferred based on the SNR of the signals; and

determine the side of the passageway at which the mobile device is located to be an unsecure side of the passageway in response to the travel time exceeding a predefined threshold time.

9. The access control device of claim 8 , wherein the UWB data includes received signal strength indicator (RSSI) data indicative of the distance of the mobile device relative to the access control device.

10. The access control device of claim 8 , wherein to estimate the travel time of the mobile device to the passageway comprises to determine a velocity of the mobile device.

11. The access control device of claim 8 , wherein to estimate the travel time of the mobile device to the passageway comprises to determine an angle of arrival of the mobile device.

12. The access control device of claim 8 , wherein the plurality of instructions further causes the processor to determine the side of the passageway at which the mobile device is located to be the unsecure side of the passageway in response to determinations that the side of the passageway inferred based on the distance of the mobile device relative to the access control device is the unsecure side and the side of the passageway inferred based on the SNR of the signals is the unsecure side.

13. The access control device of claim 8 , wherein the plurality of instructions further causes the processor to determine the side of the passageway at which the mobile device is located to be a secure side of the passageway in response to determinations that the side of the passageway inferred based on the distance of the mobile device relative to the access control device is the secure side and the side of the passageway inferred based on the SNR of the signals is the secure side.

14. The access control device of claim 8 , further comprising a lock mechanism configured to unlock in response to inferred ingress intent of a user of the mobile device and a determination that the mobile device is at the unsecure side of the passageway.

15. The access control device of claim 14 , further comprising a credential reader.

16. An access control system, comprising:

a mobile device;

an ultra wideband (UWB) subsystem comprising a plurality of UWB antennas and configured to perform a ranging session with a mobile device and generate UWB data indicative of a distance of the mobile device relative to a passageway and a signal-to-noise ratio (SNR) of signals received by the plurality of UWB antennas;

a processor; and

a memory comprising a plurality of instructions stored thereon that, in response to execution by the processor, causes the processor to:

infer a side of the passageway at which the mobile device is located based on the distance of the mobile device relative to the UWB subsystem;

infer a side of the passageway at which the mobile device is located based on the SNR of the signals;

estimate a travel time of the mobile device to the passageway based on the UWB data in response to a determination that the side of the passageway inferred based on the distance of the mobile device relative to the UWB subsystem is different from the side of the passageway inferred based on the SNR of the signals; and

determine the side of the passageway at which the mobile device is located to be an unsecure side of the passageway in response to the travel time exceeding a predefined threshold time.

17. The access control system of claim 16 , wherein the UWB data includes received signal strength indicator (RSSI) data indicative of the distance of the mobile device relative to the UWB subsystem.

18. The access control system of claim 16 , wherein to estimate the travel time of the mobile device to the passageway comprises to determine a velocity of the mobile device.

19. The access control system of claim 16 , wherein the plurality of instructions further causes the processor to determine the side of the passageway at which the mobile device is located to be the unsecure side of the passageway in response to determinations that the side of the passageway inferred based on the distance of the mobile device relative to the UWB subsystem is the unsecure side and the side of the passageway inferred based on the SNR of the signals is the unsecure side.

20. The access control system of claim 16 , wherein the plurality of instructions further causes the processor to determine the side of the passageway at which the mobile device is located to be a secure side of the passageway in response to determinations that the side of the passageway inferred based on the distance of the mobile device relative to the UWB subsystem is the secure side and the side of the passageway inferred based on the SNR of the signals is the secure side.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 18, 2023
From: LAND, JOSEPH; BROWN, DAVID; KINCAID, RYAN C.
To: SCHLAGE LOCK COMPANY LLC
Reel/Frame 064635/0276 →
Continuity (1)
Related Publication 20230417891A1 · Dec 28, 2023
References Cited (90)
US 6720861B1 · Rodenbeck et al. · 2004 [cited by applicant]
US 8319605B2 · Hassan et al. · 2012 [cited by applicant]
US 9196104B2 · Dumas et al. · 2015 [cited by applicant]
US 9218696B2 · Dumas et al. · 2015 [cited by applicant]
US 9336637B2 · Neil et al. · 2016 [cited by applicant]
US 9378598B2 · Dumas et al. · 2016 [cited by applicant]
US 9512643B1 · Keefe · 2016 [cited by applicant]
US 9970229B1 · Favila et al. · 2018 [cited by applicant]
US 10453281B1 · Lopez et al. · 2019 [cited by applicant]
US 10486646B2 · Ledvina et al. · 2019 [cited by applicant]
US 10619380B2 · Ahearn et al. · 2020 [cited by applicant]
US 10719999B2 · Love et al. · 2020 [cited by applicant]
US 10759389B2 · Ledvina et al. · 2020 [cited by applicant]
US 10760332B2 · Kincaid et al. · 2020 [cited by applicant]
US 11562609B2 · Prostko et al. · 2023 [cited by applicant]
US 11663864B2 · Kincaid et al. · 2023 [cited by applicant]
US 20020067259A1 · Fufidio et al. · 2002 [cited by applicant]
US 20050046546A1 · Masudava · 2005 [cited by applicant]
US 20060164208A1 · Schaffzin et al. · 2006 [cited by applicant]
US 20090002246A1 · Rabinovich et al. · 2009 [cited by applicant]
US 20100201482A1 · Robertson et al. · 2010 [cited by applicant]
US 20120032850A1 · Nakagawa et al. · 2012 [cited by applicant]
US 20120234058A1 · Neil et al. · 2012 [cited by applicant]
US 20130176107A1 · Dumas et al. · 2013 [cited by applicant]
US 20130237193A1 · Dumas et al. · 2013 [cited by applicant]
US 20130241694A1 · Sharma et al. · 2013 [cited by applicant]
US 20140148196A1 · Bassan-Eskenazi et al. · 2014 [cited by applicant]
US 20140292481A1 · Dumas et al. · 2014 [cited by applicant]
US 20150121465A1 · Berns et al. · 2015 [cited by applicant]
US 20150213663A1 · Dumas et al. · 2015 [cited by applicant]
US 20150309487A1 · Lyman · 2015 [cited by applicant]
US 20160055692A1 · Trani · 2016 [cited by applicant]
US 20160086400A1 · Dumas et al. · 2016 [cited by applicant]
US 20160180620A1 · Eyring et al. · 2016 [cited by applicant]
US 20160189453A1 · Johnson et al. · 2016 [cited by applicant]
US 20160217638A1 · Child et al. · 2016 [cited by applicant]
US 20160227362A1 · Howard et al. · 2016 [cited by applicant]
US 20160307385A1 · Arfwedson et al. · 2016 [cited by applicant]
US 20160332598A1 · Ghabra et al. · 2016 [cited by applicant]
US 20160337863A1 · Robinson et al. · 2016 [cited by applicant]
US 20160350992A1 · Telljohann et al. · 2016 [cited by applicant]
US 20170303090A1 · Stitt et al. · 2017 [cited by applicant]
US 20170323093A1 · Liu et al. · 2017 [cited by applicant]
US 20170372542A1 · Romero et al. · 2017 [cited by applicant]
US 20180052217A1 · Jonsson · 2018 [cited by applicant]
US 20180056939A1 · van Roermund et al. · 2018 [cited by applicant]
US 20180102008A1 · Dupart et al. · 2018 [cited by applicant]
US 20180162321A1 · Spiess · 2018 [cited by applicant]
US 20180242105A1 · Sute · 2018 [cited by applicant]
US 20180315262A1 · Love et al. · 2018 [cited by applicant]
US 20200168017A1 · Prostko et al. · 2020 [cited by applicant]
US 20200314651A1 · Pirch · 2020 [cited by examiner]
US 20210074093A1 · Love · 2021 [cited by examiner]
US 20210158637A1 · Kincaid · 2021 [cited by examiner]
US 20210295625A1 · Ljung · 2021 [cited by examiner]
US 20210365541A1 · Ohashi et al. · 2021 [cited by applicant]
US 20230010267A1 · Kincaid et al. · 2023 [cited by applicant]
US 20230053526A1 · Horne · 2023 [cited by examiner]
US 20230213637A1 · Brown et al. · 2023 [cited by applicant]
CN 102906360A · 2013 [cited by applicant]
CN 107945316A · 2018 [cited by applicant]
EP 2930071A1 · 2015 [cited by applicant]
WO 2014155255A1 · 2014 [cited by applicant]
WO 2016177666A1 · 2016 [cited by applicant]
WO 2017180563A1 · 2017 [cited by applicant]
WO 2017180688A1 · 2017 [cited by applicant]
WO 2018071671A2 · 2018 [cited by applicant]
WO 2020083750A1 · 2020 [cited by applicant]
WO 2020193566A1 · 2020 [cited by applicant]
International Search Report, International Searching Authority, International Application No. PCT/US2023/026333, Jan. 3, 2024, 2 pages. [cited by applicant]
Written Opinion of the International Searching Authority, International Searching Authority, International Application No. PCT/US2023/026333, Jan. 3, 2024, 4 pages. [cited by applicant]
Shikiar, A. et al., The Future of Authentication for the Internet of Things, FIDO Alliance, Mar. 28, 2017, https://fidoalliance.org/wpcontenVuploads/The_Future_of_Authentication_for_IoT_Webinar_170328_v10.pdf, 56 pages. [cited by applicant]
Developing Beacons with Bluetooth Low Energy (BLE) Technology; Silicon Laboratories; http://www.silabs.com/products/wireless/bluetooth/developing-beacons-with-bluetooth-low-energy-ble-technology; (last visited Apr. 27, … [cited by applicant]
Angle of arrival; Wikipedia; https://en.wikipedia.org/wiki/Angle_of_arrival; (last visited Apr. 27, 2017). [cited by applicant]
What do you want to track? Whatever you want to track, Quuppa brings you the dot on the map.; Quuppa—Do More With Location; http://quuppa.com/; (last visited Apr. 27, 2017). [cited by applicant]
Indoor Location Positioning Technology: Research, Solutions & Trends; Grizzly Analytics; http://www.grizzlyanalytics.com/report_2015_02_indoor.html; (last visited Apr. 27, 2017). [cited by applicant]
Front Page—Car Connectivity Consortium; Car Connectivity Consortium; retrieved on Jan. 13, 2021; https://carconnectivity.org/; 6 pages. [cited by applicant]
Volkswagen and NXP Show First Car Using UWB To Combat Relay Theft; EE Times; retrieved on Jan. 13, 2021; https://www.eetimes.com/volkswagen-and-nxp-show-first-car-using-uwb-to-combat-relay-theft/; 4 pages. [cited by applicant]
Car thefts up 49% in five years following advent of keyless-entry technology; The Sunday Times Driving; retrieved on Jan. 13, 2021; https://www.driving.co.uk/news/many-cars-sale-today-risk-keyless-theft-new-research-fin… [cited by applicant]
Front Page—UWB Alliance; UWB Alliance; retrieved on Jan. 13, 2021; https://uwballiance.org/; 11 pages. [cited by applicant]
Alliance Rallies UWB for Location Services; EE Times; retrieved on Jan. 13, 2021; https://www.eetimes.com/alliance-rallies-uwb-for-location-services/; 2 pages. [cited by applicant]
UWB Alliance to focus on interoperability, further boosting the UWB ecosystem; FierceWireless; retrieved on Jan. 13, 2021; https://www.fiercewireless.com/wireless/uwb-alliance-to-focus-interoperability-further-boosting-… [cited by applicant]
Front Page—FiRa Consortium; FiRa Consortium; retrieved on Jan. 13, 2021; https://www.firaconsortium.org/; 3 pages. [cited by applicant]
Introduction to the FiRa Consortium; FiRa Consortium; Aug. 1, 2019; 17 pages. [cited by applicant]
Ultra-Wideband (UWB) Gains Traction As A Sensing Technology Under New Industry Consortium; Forbes; retrieved on Jan. 13, 2021; https://www.forbes.com/...01/ultra-wideband-uwb-gains-traction-as-a-sensing-technology-under… [cited by applicant]
The Biggest iPhone News Is a Tiny New Chip Inside It; Wired; retrieved on Jan. 13, 2021; https://www.wired.com/story/apple-u1-chip/; 5 pages. [cited by applicant]
Apple built UWB into the iPhone 11. Here's what you need to know (FAQ); cnet; retrieved on Jan. 13, 2021; https://www.cnet.com/news/apple-built-uwb-into-the-iphone-11-heres-what-you-need-to-know-faq/; 6 pages. [cited by applicant]
Ultra-Wideband (UWB); NXP; retrieved on Jan. 13, 2021; https://www.nxp.com/applications/enabling-technologies/connectivity/ultra-wideband-uwb:UWB; 7 pages. [cited by applicant]
NXP Introduces Higher Security Using Ultra-Wideband Technology; Forbes; https://www.forbes.com/sites/tiriasresearch/2019/06/26/nxp-introduces-higher-security-using-ultra-wideband-technology/?sh=dc7565238410retrieved on … [cited by applicant]
Front Page—Decawave; Decawave; retrieved on Jan. 13, 2021; https://www.decawave.com/; 5 pages. [cited by applicant]