Method and device for automatic creation of a location-based talk group call with reduced messaging overhead
US9131344B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2012 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Jul 17, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method of automatic establishment of a location-based talk group call with reduced messaging overhead. The initiating device may be a subscriber unit (SU). The SU determines a geographic reference location and generates location data representative of the location. The SU broadcasts a location-based talk group call header including the location data and including a location-based talk group call identifier field set to cause other SUs receiving the call header to receive and output subsequent data associated with the call header responsive to determining that its current geographic location satisfies the location criterion of the call. The location criterion may be fully determined by the initiating SU and specified in the call header, and may take the form of a specified radius that extends from the geographic reference location represented in the call header.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.