US 11,892,545 B2 · Detecting spoofed global navigation satellite system (GNSS) signals

Abstract

In an aspect, a user equipment (UE) receives a spoofing alert message from either a server or an internet-of-things (IOT) device that indicates whether a spoofed Global Navigation Satellite System (GNSS) condition is present. Based on determining that the spoofing alert message indicates that a spoofed GNSS condition is present, the UE determines, based on the spoofing alert message, a location of a spoofer broadcasting a spoofed GNSS signal, determines, based on the location of the spoofer and a current location of the UE, that the UE is within a receiving area of the spoofed GNSS signal, and determines a position of the UE without using the spoofed GNSS signal.

Claims18

Dependent claims

A method of operating a server comprising:

receiving a warning message from a monitored device in a set of monitored devices, the warning message comprising Global Navigation Satellite System (GNSS) measurement data, wherein the GNSS measurement data comprises:
a short-term average of a first plurality of GNSS fixes determined by the monitored device;
a long-term average of a second plurality of GNSS fixes determined by the monitored device;
a difference between the short-term average and the long-term average;
and
a horizontal estimated position error determined by the monitored device;
determining, based at least in part on an analysis of the GNSS measurement data, whether a spoofed GNSS condition is present;
and
based on the determining, sending a spoofing alert message to one or more user equipments (UEs).

6 more elements

A server comprising:

memory;
and
one or more processors communicatively coupled to the memory, the one or more processors, either alone or in combination, configured to:
receive a warning message from a monitored device in a set of monitored devices, the warning message comprising Global Navigation Satellite System (GNSS) measurement data, wherein the GNSS measurement data comprises:
a short-term average of a first plurality of GNSS fixes determined by the monitored device;
a long-term average of a second plurality of GNSS fixes determined by the monitored device;
a difference between the short-term average and the long-term average;
and
a horizontal estimated position error determined by the monitored device;
determine, based at least in part on an analysis of the GNSS measurement data, whether a spoofed GNSS condition is present;
and
based on the determining, send a spoofing alert message to one or more user equipments (UEs).

9 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/238,730Filed 23 Apr 2021

Published

US 2022/0342082 A127 Oct 2022

Granted

6 Feb 2024

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

G01S 19/215
Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service: issues related to spoofing
G01S 19/08
Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers: providing…
G01S 5/0027
Transmission from mobile station to base station: of actual mobile position, i.e. position determined on mobile
G01S 5/0295
Using radio waves: proximity-based methods, e.g. position inferred from reception of particular signals

Detecting spoofed global navigation satellite system (GNSS) signals

Life of this patent

Detecting spoofed global navigation satellite system (GNSS) signals

Life of this patent

Abstract

Claims18