Methods for coherent antenna switching in AOD positioning scheme
US10928480B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Apr 17, 2019 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Apr 24, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/003
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Devices and methods of estimating the AoD of a STA are generally described. The STA receives comparison symbols from a first AP antenna. The comparison symbols are received prior to and after switching of transmitter chains from a first set of antennas to a second set of antennas. AoD symbols are received immediately after the comparison symbols. A phase and amplitude correction is determined based on a phase and amplitude change between the comparison symbols and the second AoD symbol corrected based thereon. The AoD is subsequently estimated based on the symbol measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.