US 12,345,793 B2 · Using doppler for multipath detection and mitigation in RF-based positioning

Abstract

Aspects presented herein may improve the performance and accuracy of RF-based positioning. Aspects presented herein may enable a device to use RF Doppler measurements to detect and mitigate multipath effects in RF-based positioning. The RF-based positioning may include satellite navigation, terrestrial positioning system, and/or indoor positioning. In one aspect, a UE receives, via a receiver, signals from one or more entities. The UE determines whether each received signal is a multipath signal based on a Doppler shift measurement. The UE de-weights or excludes one or more signals of the received signals in estimating a position of the UE based on whether the respective received signal is determined to be a multipath signal.

Claims19

Dependent claims

An apparatus of positioning at a user equipment (UE), comprising:

at least one memory;
a receiver;
and
at least one processor coupled to the at least one memory and the receiver, the at least one processor is configured to:
receive, via the receiver, signals from one or more entities;
determine whether each received signal is a multipath signal based on a Doppler shift measurement;
and
de-weight by W a measurement of each signal in one or more signals of the received signals in estimating a position of the UE when the respective received signal is determined to be the multipath signal, where 0≤W<1.

5 more elements

Dependencies are inferred from the claim text.

Using doppler for multipath detection and mitigation in RF-based positioning

Life of this patent

Using doppler for multipath detection and mitigation in RF-based positioning

Life of this patent

Abstract

Claims19