Satellite system with different frequency plan at the equator
First Claim
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1. A satellite communication system, comprising:
- a non-geostationary satellite configured to provide a plurality of spot beams that implement a first frequency plan for at least two of the spot beams that are planned to illuminate at Earth'"'"'s Equator and a second frequency plan for at least two other spot beams that are planned to illuminate Earth elsewhere than Earth'"'"'s Equator, where the second frequency plan is different than the first frequency plan.
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Abstract
A non-geostationary satellite is configured to provide a plurality of spot beams that implement a first frequency plan at Earth'"'"'s Equator and a second frequency plan away from Earth'"'"'s Equator. The second frequency plan is different than the first frequency plan. In one embodiment, the non-geostationary satellite is part of a constellation of non-geostationary satellites, with each of the satellites providing spot beams that implement a first frequency plan at Earth'"'"'s Equator and implement a second frequency plan away from Earth'"'"'s Equator as the satellites travel in orbit around Earth.
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Citations
27 Claims
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1. A satellite communication system, comprising:
a non-geostationary satellite configured to provide a plurality of spot beams that implement a first frequency plan for at least two of the spot beams that are planned to illuminate at Earth'"'"'s Equator and a second frequency plan for at least two other spot beams that are planned to illuminate Earth elsewhere than Earth'"'"'s Equator, where the second frequency plan is different than the first frequency plan. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A satellite communication system, comprising:
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a non-geostationary satellite configured to provide a plurality of spot beams that implement a first frequency plan at Earth'"'"'s Equator and a second frequency plan away from Earth'"'"'s Equator, the second frequency plan is different than the first frequency plan, wherein; the satellite includes a first subset of spot beams configured to illuminate a first region that is located at Earth'"'"'s Equator and a second subset of spot beams configured to illuminate a second region away from the Equator; the first set of spot beams implement the first frequency plan; the second set of spot beams implement the second frequency plan; the first set of spot beams consist of only non-articulated spot beams relative to the satellite; and the second set of spot beams includes non-articulated spot beams relative to the satellite and steerable spot beams.
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16. A satellite communication system, comprising:
a constellation of non-geostationary satellites spaced apart to surround the Earth, each of the non-geostationary satellites configured to provide a plurality of spot beams that include a first subset of plural spot beams configured to illuminate within a first region that is located at Earth'"'"'s Equator and a second subset of plural spot beams configured to illuminate within a second region away from the Equator and not illuminated by the first subset, the first subset of plural spot beams implement a first frequency plan, the second subset of plural spot beams implement a second frequency plan different than the first frequency plan. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A method for communicating, comprising:
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operating a constellation of non-geostationary satellites; each of the satellites being operated to provide a respective plurality of spot beams that implement a first frequency plan for at least two of the spot beams of the respective satellite that are planned to illuminate at Earth'"'"'s Equator and implement a different second frequency plan for at least two others of the spot beams of the respective satellite that are planned to illuminate Earth elsewhere than Earth'"'"'s Equator as the satellites travel in orbit around Earth; where said operating of the constellation of non-geostationary satellites includes having multiple satellites of the constellation communicating with a first terminal at the Equator using spot beams that implement the first frequency plan; and having multiple satellites of the constellation communicating with a second terminal away from the Equator using spot beams that implement the second frequency plan. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification