Spatial guardbands for terrestrial reuse of satellite frequencies
First Claim
1. 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 that is configured to refrain from terrestrially reusing at least one of the satellite radiotelephone frequencies that is used in a plurality of spaced apart satellite cells in the satellite footprint, within the plurality of spaced apart satellite cells and in respective spatial guardbands that are immediately outside and surround the plurality of spaced apart satellite cells.
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Abstract
Satellite radiotelephone systems include 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 is 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 is configured to terrestrially reuse at least one of the ancillary radiotelephone frequencies that is used in a satellite cell in the satellite footprint, outside the cell and in some embodiments separated therefrom by a spatial guardband
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Citations
59 Claims
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1. 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; and
an ancillary terrestrial network that is configured to refrain from terrestrially reusing at least one of the satellite radiotelephone frequencies that is used in a plurality of spaced apart satellite cells in the satellite footprint, within the plurality of spaced apart satellite cells and in respective spatial guardbands that are immediately outside and surround the plurality of spaced apart satellite cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An ancillary terrestrial component for a satellite radiotelephone system that includes 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 by the space-based component, the ancillary terrestrial component comprising:
an electronics system that is configured to terrestrially reuse at least one of the satellite radiotelephone frequencies that is used by the space-based component in a plurality of spaced apart satellite cells in the satellite footprint when the ancillary terrestrial component is located outside the plurality of spaced apart satellite cells and outside a respective plurality of spatial guardbands that are immediately outside and surround the plurality of spaced apart satellite cells and not to terrestrially reuse the at least one of the satellite radiotelephone frequencies that is used by the space-based component in the plurality of spaced apart satellite cells in the satellite footprint when the ancillary terrestrial component is located within one of the plurality of spaced apart satellite cells and/or within a spatial guardband that is immediately outside and surrounds the one of the plurality of spaced apart satellite cells. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. 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
terrestrially reusing at least one of the satellite radiotelephone frequencies that is used in a plurality of spaced apart satellite cells in the satellite footprint, outside the plurality of spaced apart satellite cells, and refraining from terrestrially reusing at least one of the satellite frequencies that is used in the plurality of spaced apart satellite cells in the satellite footprint, within the plurality of spaced apart satellite cells and in respective spatial guardbands that are immediately outside and surround the plurality of spaced apart satellite cells. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. An ancillary terrestrial network for a satellite radiotelephone system that includes a space-based component that is configured to provide wireless radiotelephone communications in a satellite footprint over a satellite radiotelephone frequency band, the ancillary terrestrial network comprising:
an ancillary terrestrial component in the satellite footprint that is configured to selectively and/or preferentially use at least a portion of the satellite radiotelephone frequency band responsive to at least one signal that is received at an element of the ancillary terrestrial component from the satellite radiotelephone system. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. 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; and
configuring an ancillary terrestrial component in the satellite footprint to selectively and/or preferentially use at least a portion of the satellite radiotelephone frequency band responsive to at least one signal that is received at an element of the ancillary terrestrial component from external of the ancillary terrestrial component. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
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Specification