System and method for DSRC communication
US8963687B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2011 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Jan 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for Dedicated Short-Range Communication (DSRC) between beacons and onboard units of a road toll system, wherein the beacons have a system-wide key and the onboard units have only individual keys, which are respectively formed from the system-wide key on the basis of a derivation code specific to the onboard units, wherein upon a communication from the onboard unit the derivation code is transmitted to the beacon in order to enable the beacon to emulate the individual key to encrypt/decrypt the communication with the onboard unit and/or for access to data stored in the onboard unit, and wherein upon communications with consecutive beacons the onboard unit transmits varying derivation codes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.