Resources Contact Us Home
Satellite communication system providing multi-gateway diversity to a mobile user terminal

Image Number 4 for United States Patent #6661996.

Disclosed herein is a method for operating a satellite communications system as well as a method for providing a larger effective gateway coverage area, and a system that operates in accordance with the methods. The methods include steps of (a) establishing a call connection between a terrestrial telecommunications network and a user terminal via a first gateway and at least one satellite; and (b) while the call connection is established, coupling the user terminal to the terrestrial telecommunications network via a second gateway and at least one further satellite. The step of coupling includes a step of conveying call speech or data information between the first gateway and the second gateway over an inter-gateway communications link. By so linking multiple gateways each gateway experiences an increase in its effective coverage area, as an on-going call can be continued even after a user terminal moves from a first gateway's coverage area into a second gateway's coverage area.

  Recently Added Patents
Methods of modulating interleukin-22 and immune response by notch regulators
Credit flow control scheme in a router with flexible link widths utilizing minimal storage
Fabric-backplane enterprise servers with pluggable I/O sub-system
Toner cartridge and image forming apparatus including the same
Message value indicator
Vehicle window opening and closing control device
  Randomly Featured Patents
Simultaneous cell group and cyclic prefix detection method, apparatus and system
Mechanism for transferring books and the like
Toy extruder
Breathing system for hypersonic aircraft
Femoral component for a hip prosthesis
Coolant band
Thin film magnetic recording disk with a chromium-nickel pre-seed layer
Flooring surface
Imaging apparatus, strobe device, and charging-control method
Document carrying device, document reading device, and image forming device