US 11,941,963 B2
System and method for facilitating detecting an unauthorized access to an object
Filippo Casamassima, Thal (AT); and Wolfgang Eber, Graz (AT)
Assigned to NXP B.V., Eindhoven (NL)
Filed by NXP B.V., Eindhoven (NL)
Filed on Mar. 28, 2022, as Appl. No. 17/705,468.
Claims priority of application No. 21176376 (EP), filed on May 27, 2021.
Prior Publication US 2022/0383716 A1, Dec. 1, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G08B 13/22 (2006.01); H04B 1/7163 (2011.01); H04L 25/02 (2006.01)
CPC G08B 13/22 (2013.01) [H04B 1/7163 (2013.01); H04L 25/0212 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A system for facilitating detecting an unauthorized access to an object, the system comprising:
a plurality of ultra-wideband, UWB, communication nodes;
a controller operatively coupled to said plurality of UWB communication nodes, wherein the controller is configured to:
cause at least one of the UWB communication nodes to transmit one or more UWB messages to other UWB communication nodes of said plurality of UWB communication nodes;
receive a channel impulse response, CIR, estimate and/or one or more parameters relating to said CIR output by the UWB communication nodes in response to receiving said UWB messages;
analyze said CIR estimate and/or said parameters relating to the CIR to detect said unauthorized access to the object;
wherein the controller is configured to cause different UWB communication nodes of said plurality of UWB communication nodes to transmit said UWB messages by periodically changing the UWB communication node or nodes that transmit the messages;
wherein the controller is configured to determine changes of the CIR estimate and/or of the parameters relating to the CIR, and to detect said unauthorized access by comparing the determined changes with predefined values and concluding that unauthorized access has occurred if the determined changes match with said predefined values within a given tolerance range.