Patent ID: 11941963
Assignee: NXP B.V.
Field: Control (Instruments)
Classification: CPC G  H  B | IPC G  H

Claim 9:
10. A method for facilitating detecting an unauthorized access to an object, the method comprising:
causing, by a controller, at least one of a plurality of UWB communication nodes to transmit one or more UWB messages to other UWB communication nodes of said plurality of UWB communication nodes;
receiving, by the controller, 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;
analyzing, by the controller, said CIR estimate and/or said parameters relating to the CIR to detect said unauthorized access to the object;
wherein the controller causes 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 determines changes of the CIR estimate and/or of the parameters relating to the CIR, and detects 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.