Methods and systems for modifying satellite antenna cell patterns in response to terrestrial reuse of satellite frequencies
First Claim
1. A satellite radiotelephone communications method comprising:
- providing space-based wireless radiotelephone communications in a satellite footprint over a satellite radiotelephone frequency band, the satellite footprint being divided into a plurality of satellite cells in which satellite radiotelephone frequencies of the satellite radiotelephone frequency band are spatially reused;
terrestrially reusing at least one of the satellite radiotelephone frequencies that is assigned to a predetermined satellite cell in the satellite footprint, outside the predetermined satellite cell; and
modifying a radiation pattern of at least the predetermined satellite cell to reduce interference with the at least one of the satellite radiotelephone frequencies that is terrestrially reused outside the predetermined satellite cell.
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Abstract
Space-based wireless radiotelephone communications are provided in a satellite footprint over a satellite radiotelephone frequency band. The satellite footprint is divided into satellite cells in which satellite radiotelephone frequencies of the satellite radiotelephone frequency band are spatially reused. At least one of the satellite radiotelephone frequencies that is assigned to a given satellite cell in the satellite footprint is terrestrially reused outside the given satellite cell. A radiation pattern of at least the given satellite cell is modified to reduce interference with the at least one of the satellite radiotelephone frequencies that is terrestrially reused outside the given satellite cell.
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Citations
44 Claims
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1. A satellite radiotelephone communications method comprising:
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providing space-based wireless radiotelephone communications in a satellite footprint over a satellite radiotelephone frequency band, the satellite footprint being divided into a plurality of satellite cells in which satellite radiotelephone frequencies of the satellite radiotelephone frequency band are spatially reused;
terrestrially reusing at least one of the satellite radiotelephone frequencies that is assigned to a predetermined satellite cell in the satellite footprint, outside the predetermined satellite cell; and
modifying a radiation pattern of at least the predetermined satellite cell to reduce interference with the at least one of the satellite radiotelephone frequencies that is terrestrially reused outside the predetermined satellite cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A satellite radiotelephone system comprising:
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a space-based component that is configured to provide wireless radiotelephone communications in a satellite footprint over a satellite radiotelephone frequency band, the satellite footprint being divided into a plurality of satellite cells in which satellite radiotelephone frequencies of the satellite radiotelephone frequency band are spatially reused;
an ancillary terrestrial network comprising a plurality of ancillary terrestrial components that are configured to terrestrially reuse at least one of the satellite radiotelephone frequencies that is assigned to a predetermined satellite cell in the satellite footprint, outside the predetermined satellite cell;
a monitor that is configured to monitor interference in at least one of the ancillary terrestrial components that is configured to terrestrially reuse the at least one of the satellite radiotelephone frequencies, by the at least one of the satellite radiotelephone frequencies that is used in the predetermined satellite cell; and
a controller that is configured to modify a radiation pattern by the space-based component of the at least one of the satellite radiotelephone frequencies in at least the predetermined satellite cell to reduce interference at the at least one of the ancillary terrestrial components, with the at least one of the satellite radiotelephone frequencies that is terrestrially reused by the at least one of the ancillary terrestrial components. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A system for reducing interference in a satellite radiotelephone system comprising a space-based component that is configured to provide wireless radiotelephone communications in a satellite footprint over a satellite radiotelephone frequency band, the satellite footprint being divided into a plurality of satellite cells in which satellite radiotelephone frequencies of the satellite radiotelephone frequency band are spatially reused, and an ancillary terrestrial network comprising a plurality of ancillary terrestrial components that are configured to terrestrially reuse at least one of the satellite radiotelephone frequencies that is assigned to a predetermined satellite cell in the satellite footprint, outside the predetermined satellite cell, the interference reducing system comprising:
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a monitor that that is configured to monitor interference in at least one of the ancillary terrestrial components that is configured to terrestrially reuse the at least one of the satellite radiotelephone frequencies, by the at least one of the satellite radiotelephone frequencies that is used in the predetermined satellite cell; and
a controller that is configured to modify a radiation pattern by the space-based component of the at least one of the satellite radiotelephone frequencies in at least the predetermined satellite cell to reduce interference at the at least one of the ancillary terrestrial components, with the at least one of the satellite radiotelephone frequencies that is terrestrially reused by the at least one of the ancillary terrestrial components. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A system for reducing interference in a satellite radiotelephone system comprising a space-based component that is configured to provide wireless radiotelephone communications in a satellite footprint over a satellite radiotelephone frequency band, the satellite footprint being divided into a plurality of satellite cells in which satellite radiotelephone frequencies of the satellite radiotelephone frequency band are spatially reused, and an ancillary terrestrial network comprising a plurality of ancillary terrestrial components that are configured to terrestrially reuse at least one of the satellite radiotelephone frequencies that is assigned to a predetermined satellite cell in the satellite footprint, outside the predetermined satellite cell, the interference reducing system comprising:
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means for monitoring interference in at least one of the ancillary terrestrial components that is configured to terrestrially reuse the at least one of the satellite radiotelephone frequencies, by the at least one of the satellite radiotelephone frequencies that is used in the predetermined satellite cell; and
means for modifying a radiation pattern by the space-based component of the at least one of the satellite radiotelephone frequencies in at least the predetermined satellite cell to reduce interference at the at least one of the ancillary terrestrial components, with the at least one of the satellite radiotelephone frequencies that is terrestrially reused by the at least one of the ancillary terrestrial components. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36)
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37. A satellite radiotelephone communications method comprising:
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providing space-based wireless radiotelephone communications in a satellite footprint over a satellite radiotelephone frequency band, the satellite footprint being divided into a plurality of satellite cells in which satellite radiotelephone frequencies of the satellite radiotelephone frequency band are spatially reused; and
modifying a radiation pattern of a predetermined satellite cell to reduce interference with at least one of the satellite radiotelephone frequencies that is terrestrially reused outside the predetermined satellite cell. - View Dependent Claims (38, 39, 40, 41, 42, 43)
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44. A satellite radiotelephone communications method comprising:
modifying a radiation pattern for space-based communications of a satellite cell in response to terrestrial reuse of at least one frequency that is used by the space-based communications of the satellite cell, outside the satellite cell.
Specification