The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 18, 2000
Filed:
Jan. 03, 1997
Richard H Sherman, Fremont, CA (US);
Vijaya Gallagher, San Jose, CA (US);
John J Huang, Saratoga, CA (US);
Globalstar L.P., San Jose, CA (US);
Abstract
A satellite communications system is described. The system includes a plurality of satellites, each of which transmits one or more forward links containing traffic to one or more terrestrial users. Each forward link of each of the satellites has a maximum radiation limit. At least one terrestrial user is capable of concurrently receiving at least two of the forward links. The concurrently received forward links redundantly contain the traffic addressed to the user. A computing center has a traffic controller for allocating the traffic to the satellites using gateways. The traffic controller includes a fading model descriptive of fading characteristics for each of the one or more forward links; a link performance model descriptive of losses in each of the forward links; and a power allocation model for computing a traffic allocation for each satellite of the constellation of satellites. The traffic allocation causes transmitted satellite power to be less than the maximum radiation limit for each link. The traffic control system may be located within a gateway so as to optimize traffic associated with that gateway alone. The optimization may also be directed to minimize total radiation from all forward links for particular satellites.