Method and apparatus for dropping and reacquiring a dispatch channel
US6937873B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2003 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Feb 19, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/45
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communication system (100) provides for improved dispatch communications, by providing a method for monitoring the signal quality at each of the Mobile Stations (MS) involved in a dispatch call. Once engaged in the dispatch call, the MSs (110, 112) monitor the signal quality of their ACCH channel (204) and send a message back to the system (208) if their signal quality falls below a predetermined threshold. If the signal quality of any dispatch call participant falls below the given threshold (206), the system alerts all the dispatch call participants (210) thereby avoiding any loss of communications, and tears down the previously set up dispatch call. If the signal quality becomes acceptable again (216) for those MS who had previously experienced poor signal quality, they send a message to the system, which automatically sets up a new dispatch call and alerts all the dispatch participants that the dispatch channel can be used again (218).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.