Direct mode repeater in a mobile radio system
US6052557A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1996 |
| Grant date | Apr 18, 2000 |
| Priority date | — |
| Expiry date | Sep 12, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/15557
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A direct mode repeater for forwarding traffic between mobile stations communicating on a direct mode channel, includes a transceiver unit for forwarding radio messages between mobile stations communicating on a direct mode channel, and a control unit for controlling the operation of the repeater and for directing the transceiver unit to the direct mode channel. In order to prevent simultaneous transmission of several repeaters on the same direct mode channel. The transmission on the direct mode channel of the repeater that forwards radio messages on the direct mode channel contains at desired intervals the identifier of the repeater, the identifier indicating that the repeater forwards traffic on the direct mode channel. The the repeater is arranged to monitor the direct mode channel as the repeater is seeking to switch onto the direct mode channel, and to switch onto the direct mode channel only if no identifier from any other repeater has occurred on the direct mode channel during a predetermined monitoring period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.