Direction finding positioning in wireless local area networks
US10206122B2 · kind B2 · utility
5Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2015 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | Jul 7, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of direction finding (DF) positioning in a wireless location area network (WLAN) is proposed. A multiple antenna IEEE 802.11 transmitting device can transmit signal preamble containing multiple Long Training Field (LTF) symbols in a radio frame from multiple antennas simultaneously, which allows a receiving device to resolve multiple DF sounding signals transmitted from the multiple antennas. As a result, angle of departure (AoD) of the transmitting device can be estimated by using the multiple resolved DF sounding signals from each antenna for DF positioning purpose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.