Passive positioning procedure and use of single burst ASAP FTM sessions
US9907047B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2016 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Nov 17, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques for estimating a position of an observing station are disclosed based on capturing, at the observing station, a first and a second FTM message exchanged between a first messaging station and a second messaging station. At the observing station, a first time of arrival of the first FTM message and a second time of arrival of the second FTM message may be determined. Based on contents of one or more FTM messages, a first transmission-related time associated with the first FTM message and a second transmission-related time associated with the second FTM message may be obtained. The position of the observing station may be estimated based on (1) a position of the first messaging station, (2) a position of the second messaging station, (3) the first time of arrival, (4) the second time of arrival, (5) the first transmission-related time, and (6) the second transmission-related time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.