Method and onboard-unit for radio communication in road toll system
US8674846B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2011 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Aug 29, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and onboard unit for radio communication between a radio beacon and an onboard unit with a transceiver as part of a road toll system, wherein the radio beacon has a limited radio coverage area and the onboard unit has two operating modes, i.e. a first energy-consuming working mode and a second energy-saving resting mode, and can be changed from the resting mode to the working mode by a signal received from the radio beacon. The method comprises: receiving a signal in the onboard unit and as a result, changing the onboard unit to the working mode, if this was previously in the resting mode, within a prompt time; transmitting a response signal, which contains at least one information message concerning the operating mode of the onboard unit before receipt of the signal, from the onboard unit to the radio beacon; and on the basis of the received operating mode information selecting by means of the radio beacon whether the remaining part of the radio communication is to be conducted with the onboard unit for a longer or shorter duration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.