Radio tele-communication system using multichannel access scheme
US5210752A · kind A · utility
26Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1991 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Jul 12, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J4/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a radio tele-communication system of this invention, each mobile station is designed to determine whether a control radio frequency can be used and to determine whether any free time slots are included in the time slots of a plurality of speech radio frequencies. A calling operation is performed by selecting a radio channel for the calling operation from the free time slots of the plurality of speech radio frequencies and the control radio frequency on the basis of the determination results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.