Telematics system and method having combined cellular and satellite functionality
US8160656B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2007 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Jul 8, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/18517
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A vehicle Telematics unit includes a cellular transceiver and a satellite receiver. At least one controller controls the transceiver and the receiver and determines which one to use to communicate with a source of Telematics service. If the transceiver is to be used, the controller receives messages in cellular communications from the source with a cellular network. If the receiver is to be used, the controller receives messages in satellite communications from the source with a satellite network. The controller can programmably control power from a battery to the transceiver and receiver when the vehicle is turned off using discontinuous reception parameters, designated on/off times, a controlled duration, and programmable timers. The transceiver is used to return acknowledgments of messages received. If a message is received with the receiver, the acknowledgment is stored so it can be sent at another time when the transceiver is to be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.