SYSTEMS AND METHODS FOR HANDOVER BETWEEN SPACE BASED AND TERRESTRIAL RADIOTERMINAL COMMUNICATIONS, AND FOR MONITORING TERRESTRIALLY REUSED SATELLITE FREQUENCIES AT A RADIOTERMINAL TO REDUCE POTENTIAL INTERFERENCE
First Claim
1. A method for handing over wireless communications in a satellite communications system, the satellite communications system comprising a satellite that is configured to wirelessly communicate with radioterminals in a satellite coverage area over a satellite frequency band, and an ancillary terrestrial component that is configured to wirelessly communicate with radioterminals in the satellite coverage area over at least some of the satellite frequency band, to thereby terrestrially reuse at least some of the satellite frequency band, the handover method comprising:
- handing over wireless communications with a radioterminal from the ancillary terrestrial component to the satellite if the radioterminal transmit power exceeds a threshold and a received satellite signal quality exceeds a threshold, even though the radioterminal is able to wirelessly communicate with the ancillary terrestrial component.
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Accused Products
Abstract
A satellite communications system includes a satellite that is configured to wirelessly communicate with radioterminals in a satellite coverage area over a satellite frequency band, and an ancillary terrestrial component that is configured to wirelessly communicate with radioterminals in the satellite coverage area over at least some of the satellite frequency band, to thereby terrestrially reuse at least some of the satellite frequency band. Wireless communications with a radioterminal are handed over from the ancillary terrestrial component to the satellite if the radioterminal transmit power exceeds a threshold, and a received satellite signal quality exceeds a threshold, even though the radioterminal is able to wirelessly communicate with the ancillary terrestrial component. Downlink wireless radiation that is received at the radioterminal from a satellite may be monitored to determine potential interference created by the uplink radiation of the radioterminal due to the terrestrial reuse of at least some of the satellite frequency band.
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Citations
34 Claims
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1. A method for handing over wireless communications in a satellite communications system, the satellite communications system comprising a satellite that is configured to wirelessly communicate with radioterminals in a satellite coverage area over a satellite frequency band, and an ancillary terrestrial component that is configured to wirelessly communicate with radioterminals in the satellite coverage area over at least some of the satellite frequency band, to thereby terrestrially reuse at least some of the satellite frequency band, the handover method comprising:
handing over wireless communications with a radioterminal from the ancillary terrestrial component to the satellite if the radioterminal transmit power exceeds a threshold and a received satellite signal quality exceeds a threshold, even though the radioterminal is able to wirelessly communicate with the ancillary terrestrial component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for monitoring interference in a satellite communications system, the satellite communications system comprising a satellite that is configured to wirelessly communicate with radioterminals in a satellite coverage area over a satellite frequency band, and an ancillary terrestrial component that is configured to wirelessly communicate with radioterminals in the satellite coverage area over at least some of the satellite radioterminal frequency band, to thereby terrestrially reuse at least some of the satellite frequency band, the monitoring method comprising:
monitoring downlink wireless radiation that is received at a radioterminal from a satellite, to thereby determine potential interference created by the uplink radiation of the radioterminal due to the terrestrial reuse of at least some of the satellite frequency band. - View Dependent Claims (14, 15, 16, 17)
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18. A wireless communications system comprising:
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a satellite that is configured to wirelessly communicate with radioterminals in a satellite coverage area over a satellite frequency band;
an ancillary terrestrial component that is configured to wirelessly communicate with radioterminals in the satellite coverage area over at least some of the satellite frequency band, to thereby terrestrially reuse at least some of the satellite frequency band; and
a controller that is configured to hand over wireless communications with a radioterminal from the ancillary terrestrial component to the satellite if the radioterminal transmit power exceeds a threshold and a received satellite signal quality exceeds a threshold, even though the radioterminal is able to wirelessly communicate with the ancillary terrestrial component. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A satellite communications system comprising:
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a satellite that is configured to wirelessly communicate with radioterminals in a satellite coverage area over a satellite frequency band;
an ancillary terrestrial component that is configured to wirelessly communicate with radioterminals in the satellite coverage area over at least some of the satellite radioterminal frequency band, to thereby terrestrially reuse at least some of the satellite frequency band; and
a radioterminal that is configured to monitor downlink wireless radiation that is received at the radioterminal from a satellite, to thereby determine potential interference created by the uplink radiation of the radioterminal due to the terrestrial reuse of at least some of the satellite frequency band. - View Dependent Claims (31, 32, 33, 34)
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Specification