Location tracking based on proximity-based ad hoc network
US8045482B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2008 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Jun 17, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method is described for constructing a proximity-based ad hoc network among a plurality of sensors and for using such a network to perform location tracking. The system and method uses time-coded data received from each of the sensors to determine a current proximity of each of the sensors to one or more beacons. Then, by leveraging information relating to the effective transmission ranges of the beacons, the system and method determines the relative location of each of the plurality of sensors with respect to other sensors within the plurality of sensors. Where actual (as opposed to relative) location information is available for a particular sensor, it can be used to generate or augment location information associated with other sensors known to be spatially and temporally proximate to the particular sensor. The current location information for each of the sensors is then used in providing location-based services.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.