Cellular voice and data radiotelephone system
US4654867A · kind A · utility
254Cited by
39References
63Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1986 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Aug 11, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W28/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data message transmission system for a cellular radiotelephone system is disclosed. Data to be transmitted is converted into a format compatible with radio transmission prior to transmission. The data is reconverted to its original format following reception. Handoff is accomplished by halting the data transmission prior to handoff and resuming data transmission after handoff. Call supervision occurs via busy-idle bit coding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.