Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode
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United States of America Patent
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Nov 29, 2011
Grant Date -
Feb 11, 2010
app pub date -
Aug 31, 2009
filing date -
Sep 14, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A space-based component, such as a satellite, is configured to receive wireless communications from radiotelephones in a satellite footprint over an uplink satellite radiotelephone frequency, and to transmit wireless communications to the radiotelephones over a downlink radiotelephone frequency. An ancillary terrestrial network, that may include one or more ancillary terrestrial components, is configured to transmit wireless communications to, and receive wireless communications from, the radiotelephones over the downlink satellite radiotelephone frequency in a time-division duplex mode. By terrestrially transmitting and receiving wireless communications over the downlink satellite radiotelephone frequency in a time-division duplex mode, interference at the space-based component and/or at the gateway, by the ancillary terrestrial network and/or the radiotelephones due to terrestrial reuse of cellular satellite frequency spectrum, may be reduced or eliminated.
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