Co-located subscriber unit to subscriber unit communication within a satellite communication system
US5737685A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1995 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Dec 20, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/18539
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A satellite communication system (SCS)(100) and method (300) are provided that provide a geographically co-located user assignment system. For unit-to-unit communication, each group of subscriber units is instructed to operate in a half-duplex unit to unit mode. The geographically co-located user assignment system comprises an assignment unit (201), a storage unit (203), and an instruction unit (205) such that a first subscriber unit (204) initiates unit to unit communication with at least a second subscriber unit (206, . . . ) in the first subscriber unit's user group utilizing a multiple access channel assigned to that group by transmitting on an assigned satellite downlink frequency of the multiple-access channel on a push-to-talk basis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.