Communication system employing reuse of satellite spectrum for terrestrial communication
AssigneeHughes Electronics Corporation
InventorsWILLIAM W. MAYFIELD, DONALD C. D. CHANG, JOHN I. NOVAK III
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Abstract
A terrestrial communication system using satellite uplink and downlink frequencies is disclosed. A terrestrial cell site produces a signal at a satellite downlink frequency that is transmitted to a terrestrial user terminal. The terrestrial cell site receives a signal at a satellite uplink frequency that was transmitted by a terrestrial user terminal. The terrestrial cell site may include a signal nulling means in the direction of a satellite producing signals at the uplink and downlink frequencies.
Claims5
A terrestrial communication system using satellite uplink and downlink frequencies comprising:
- a terrestrial cell site producing a signal at a satellite uplink frequency that is transmitted to a terrestrial terminal unit, and
- said terrestrial cell site receiving a signal at a satellite downlink frequency that was transmitted by said terrestrial terminal unit.
A terrestrial communication system using satellite uplink and downlink frequencies comprising:
- a terrestrial terminal unit producing a signal at a satellite downlink frequency that is transmitted to a terrestrial cell site, and
- said terrestrial terminal receiving a signal at a satellite uplink frequency that was transmitted by said terrestrial cell site.
A method of integrating a terrestrial communication system into a satellite communication frequency spectrum comprising the steps of:
- producing a signal at a satellite uplink frequency that is transmitted from a terrestrial cell site to a terrestrial user terminal, and
- receiving a signal at a satellite downlink frequency that was produced by said terrestrial user terminal and transmitted to said terrestrial cell site.
Dependencies are inferred from the claim text.