Method and devices for identifying a vehicle using a location
US9147344B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2013 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Dec 24, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Methods for identifying a vehicle using a predetermined location, and a radio beacon and an onboard unit are provided. One method comprises: carrying, on the vehicle, an onboard unit that broadcasts status messages that each indicate a current relative distance of the onboard unit from the predetermined location and a radio identifier that changes after each or several status messages; receiving at least one status message in a radio beacon; detecting a location usage of the vehicle by evaluating the status message(s) based on the indicated relative distance; transmitting an identification request from the radio beacon to the onboard unit addressed according to the radio identifier from the status message(s); receiving and conducting a legitimacy check of the identification request in the onboard unit; and if the request is legitimate, transmitting an identification of the onboard unit to the radio beacon that remains the same over changes of radio identifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.