Modem signaling using speech components over a voice channel of a wireless communication system
US8761736B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 7, 2010 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Jul 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M11/066
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method of communicating with a modem via a voice channel of a wireless communication system. The method carried out by the system includes the steps of (a) establishing a voice channel connection between a vehicle telematics unit and call center via a wireless cellular network, (b) generating a modem signaling carrier comprising a single frequency tone together with a speech component, (c) sending the modem signaling carrier over the voice channel connection using an EVRC-B vocoder, (d) establishing a data communication session over the voice channel connection in response to the modem signaling carrier, and thereafter (e) carrying out data communications between the vehicle telematics unit and call center during the data communication session.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.