Method and system for enhancing accuracy in location and proximity determination
US9949226B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2016 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Oct 5, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system comprising beacon-generating clusters for enabling a mobile computing device to perform location or proximity determination is provided. Each cluster comprises a primary station for broadcasting a primary beacon, and an offset-assisted station, positioned from the primary station by an offset distance along a direction, for broadcasting a secondary beacon. The offset distance and the direction are unique for all the clusters, causing a jittering area, within which the mobile computing device is unable to determine which one of adjacent primary stations is closer to from detecting the primary beacons, to be reduced by further utilizing the secondary beacons provided by the clusters. Fluctuation in received signal strength indicator (RSSI) can be reduced by having each station, primary or secondary, installed with multiple co-located broadcasting units for utilizing space and time diversity to reduce RSSI fluctuation. In another option, multiple offset-assisted stations are used for each cluster.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.