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:
May. 27, 2003
Filed:
Dec. 21, 1999
Julian Cable, Bishop Stortford, GB;
Laurent Thomasson, Toulouse, FR;
Peter Takats, Notre Dame de L'Ile Perrot, CA;
Nortel Networks Limited, St. Laurent, CA;
Abstract
A satellite communication system having a spatial segment comprising at least one satellite, preferably in a geostationary orbit, carrying a multi-beam telecommunication payload and a terrestrial segment comprising access gateways to terrestrial networks each arranged to communicate with the satellite via a forward link uplink beam and a return link downlink beam and user terminals each arranged to communicate with a satellite via a forward link downlink beam and a return link uplink beam, wherein the forward link carries signals multiplexed in time and the return link carries signals multiplexed in frequency and time, the payload comprising; a forward link router for routing signals multiplexed in time from a forward link uplink beam on a frame basis to a forward downlink beam, a return link router for routing signals multiplexed in frequency and time from a return uplink beam on a frequency bank basis to a return link downlink beam, and a mesh communication router for receiving signals multiplexed in frequency and time from a return link uplink beam, generating signals multiplexed in time and routing these signals to a forward link downlink beam.