Radio telephone system
US4875231A · kind A · utility
69Cited by
6References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 27, 1987 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | Oct 27, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/72508
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio telephone system includes a base station connected to a telephone exchanger and a plurality of mobile stations connected to the base station through a radio channel including a control channel and communication channels. The base station includes a transmitter/receiver, a receiver, and a controller. In a stand-by mode, the controller sets a channel of the transmitter/receiver to the control channel to receive a calling signal from each mobile station and sets a channel of the receiver to a given communication channel to monitor vacancy of the communication channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.