Multipath filtering for wireless RF signals
US11451287B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2021 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Mar 16, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/23
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Filtering for sampled data representing uplink wireless RF signals monitored by a pair of antennas is provided to improve accuracy in determining an angular location of an identified UE. An extracted portion of the filtered sampled data is used to improve accuracy in determining an angular location of the identified UE. The extracted portion represents direct path uplink wireless RF signals that have traveled by a line of sight between the pair of antennas and the identified UE. Another portion of the filtered sampled data is cancelled, which represents multiple path (multipath) uplink wireless RF signals that have traveled a longer distance than the direct path signals due to reflection from one or more surfaces on multiple paths between the identified UE and the pair of antennas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.