US 11,889,313 B2 · Wireless channel power profile false base station detection

Abstract

In a wireless access network, a false base station (FBS) may imitate a legitimate base station by repeating the transmissions of the legitimate base station at a higher power level such that one or more user equipment (UEs) synchronize with the FBS instead of the legitimate base station. The present disclosure provides a UE that detects an FBS. The UE may estimate a time of arrival of different multipath components of a downlink signal corresponding to a physical cell identity. The UE may determine an existence of FBS based on a difference between the times of arrival of two of the different multipath components exceeding a threshold amount of time. The UE may perform a mitigation operation in response to determining the existence of the FBS.

Claims20

Dependent claims

A method of wireless communication for a user equipment (UE), comprising:

estimating a time of arrival of different multipath components of a downlink signal from a base station, wherein the different multipath components comprise a first cluster of multipath components and a second cluster of multipath components, wherein the first cluster corresponds to a first physical layer signal and the second cluster corresponds to a second physical layer signal;
determining an existence of a false base station (FBS) based on a difference between times of arrival of the first cluster and the second cluster exceeding a threshold amount of time, wherein the threshold amount of time comprises at least one orthogonal frequency division multiplexing (OFDM) time-domain symbol duration;
and
performing a mitigation operation in response to determining the existence of the FBS.

1 more element

Dependencies are inferred from the claim text.

Wireless channel power profile false base station detection

Life of this patent

Wireless channel power profile false base station detection

Life of this patent

Abstract

Claims20