Communicating on a direct mode channel
US5822682A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1996 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Sep 20, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for communicating on a direct mode channel on which there is at least one communicating first radio unit, and a second radio unit which is equipped with a memory and which seeks to communicate on the direct mode channel with an intended transmit power. According to the method, the first radio unit is transmitting on the direct mode channel, and includes information in its transmission on the transmit power it is using, a second radio unit monitors the transmissions on the direct mode channel, and receives the transmission of the first radio unit, and stores in its memory the information on the transmit power contained in the transmission of the first radio unit, the second radio unit measures the quality of the transmission of the first radio unit, and stores the information characterizing the quality in its memory, the second radio unit compares the quality and transmits power information of the first radio unit to the transmit power it intends to use for transmitting signals, and as a result of the comparison infers whether it can start transmitting on the direct mode channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.