Method and apparatus providing suppression of system access by use of confidence polygons, volumes and surfaces in a mobile satellite system
US7995989B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2000 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Jan 16, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed are methods and apparatus to control the actions of a user terminal (UT) located at a remote location, possibly far from a gateway (GW), which has an interface to the Public Switched Telephone Network (PSTN) and/or to the Internet. The methods and apparatus provide for operation of a mobile satellite communication system having at least one gateway (GW), at least one user terminal (UT), and a constellation of satellites. The methods and apparatus allow access to the communication satellites by specifying an exclusion zone having a confidence limit (CL) associated therewith. The methods and apparatus selectively provide service to a UT depending on a determined location of the UT relative to the exclusion zone and on an estimated error (E) of the determined UT location, wherein location of the UT is determined by the UT, and transmitted to the GW, or location of the UT is determined by the GW.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.