Cellular telephone communication protocol
US6414969B1 · kind B1 · utility
2Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1999 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Jun 2, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A cellular telephone communication protocol enables a communication link primarily for the transmission of voice and data. At predetermined intervals or on-demand data regarding location, an event, or a condition is sent by muting the voice audio and sending a data frame having a pre-determined sequence. Following the transmission of the location, event, or condition data transmission of voice is resumed. The communication link of the preferred embodiment uses a half duplex, frequency shift, keying modulation technique. However, other modulation techniques may be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.