Active geo-location range for WLAN devices
US10756775B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 2019 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Oct 1, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and devices are disclosed that increase the range of active geo-location from the airborne measuring station as compared with known methods by increasing the effective receive sensitivity of the airborne measuring station. In one embodiment this may be accomplished by transmitting a predetermined ranging packet and correlating the raw received bit stream of the response packet with the predetermined bit stream. In one embodiment, the disclosed method applies to the reception of IEEE 802.11 direct sequence spread spectrum DSSS ACK and DSSS CTS packets in response to DSSS data null and DSSS RTS packets respectively, in the 2.4 GHz band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.