Intra- and/or inter-system interference reducing systems and methods for satellite communications systems
First Claim
1. A method of operating a satellite radiotelephone communications system, the method comprising:
- receiving a first radio signal via a first satellite reception path that serves a satellite cell, the received first radio signal including a desired satellite uplink signal transmitted from a first source using a frequency assigned to the satellite cell and an interfering signal transmitted from at least one second source using the frequency assigned to the satellite cell;
receiving a second radio signal via a second satellite reception path that is configured to receive radio transmissions from another communications system that uses the frequency assigned to the satellite cell, the second radio signal including a measure of the interfering signal; and
processing the first and second radio signals to recover the desired satellite uplink signal.
17 Assignments
0 Petitions
Accused Products
Abstract
A first radio signal is received via a first satellite reception path, for example, an antenna or spot beam, which serves a satellite cell. The received first radio signal includes a desired satellite uplink signal transmitted from a first source using a frequency assigned to the satellite cell and an interfering signal transmitted from at least one second source using the frequency assigned to the satellite cell. A second radio signal is received via a second satellite reception path, for example, via another antenna or spot beam of the system and/or via a satellite antenna beam of another system. The second radio signal includes a measure of the interfering signal. The first and second radio signals are processed to recover the desired satellite uplink signal.
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Citations
88 Claims
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1. A method of operating a satellite radiotelephone communications system, the method comprising:
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receiving a first radio signal via a first satellite reception path that serves a satellite cell, the received first radio signal including a desired satellite uplink signal transmitted from a first source using a frequency assigned to the satellite cell and an interfering signal transmitted from at least one second source using the frequency assigned to the satellite cell; receiving a second radio signal via a second satellite reception path that is configured to receive radio transmissions from another communications system that uses the frequency assigned to the satellite cell, the second radio signal including a measure of the interfering signal; and processing the first and second radio signals to recover the desired satellite uplink signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of operating a satellite radiotelephone communications system, the method comprising:
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receiving first and second radio signals via respective first and second spot beams that serve respective first and second satellite cells of the satellite radiotelephone communications system, the first radio signal including a desired satellite uplink signal transmitted from a first source in the first satellite cell using a frequency assigned to the first satellite cell and an interfering signal transmitted from at least one second source using the frequency assigned to the first satellite cell, the second radio signal including a measure of the interfering signal, the second spot beam configured to receive radio transmissions from another communications system that uses the frequency assigned to the first satellite cell; and processing the first and second radio signals to recover the desired satellite uplink signal. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of operating a first satellite radiotelephone communications system to reduce interference from a second satellite radiotelephone communications system, the method comprising:
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receiving a first radio signal via a first satellite reception path that serves a satellite cell of the first satellite radiotelephone communications system, the received first radio signal including a desired satellite uplink signal transmitted from a first source using a frequency assigned to the satellite cell and an interfering signal transmitted from at least one second source communicating with the second satellite radiotelephone communications system using the frequency assigned to the satellite cell; receiving a second radio signal via a second satellite reception path configured to preferentially receive transmissions from a coverage area of the second satellite radiotelephone communications system, the second radio signal including a measure of the interfering signal; and processing the first and second radio signals to recover the desired satellite uplink signal. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37)
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38. A method of operating a first satellite radiotelephone communications system to reduce interference from a second satellite communications system, the method comprising:
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receiving a first radio signal via a first satellite configured to preferentially receive transmissions from a coverage area of the first satellite radiotelephone communications system, the received first radio signal including a desired satellite uplink signal transmitted from a first source in the coverage area of the first satellite radiotelephone communications system and an interfering signal transmitted from at least one second source communicating with the second satellite communications system using at least one frequency of the desired satellite uplink signal; receiving a second radio signal via a second satellite configured to preferentially receive transmissions from a coverage area of the second satellite communications system, the second radio signal including a measure of the interfering signal; and processing the first and second radio signals to recover the desired satellite uplink signal. - View Dependent Claims (39, 40, 41, 42, 43)
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44. A system comprising:
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a first satellite reception path that serves a satellite cell and that receives a first radio signal including a desired satellite uplink signal transmitted from a first source using a frequency assigned to the satellite cell and an interfering signal transmitted from at least one second source using the frequency assigned to the satellite cell; a second satellite reception path that is configured to receive radio transmissions from another communications system that uses the frequency assigned to the satellite cell, wherein the second satellite reception path is further configured to receive a second radio signal including a measure of the interfering signal; and an interference-suppressing signal processor that processes the first and second radio signals to recover the desired satellite uplink signal. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
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62. An apparatus comprising:
an interference-suppressing signal processor configured to receive a first radio signal from a first satellite reception path that serves a satellite cell, the first radio signal including a desired satellite uplink signal transmitted from a first source using a frequency assigned to the satellite cell and an interfering signal transmitted from at least one second source using the frequency assigned to the satellite cell, to receive a second radio signal from a second satellite reception path that is configured to receive radio transmissions from another communications system that uses the frequency assigned to the satellite cell and that receives a second radio signal including a measure of the interfering signal, and to process the first and second radio signals to recover the desired satellite uplink signal. - View Dependent Claims (63, 64, 65)
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66. A satellite radiotelephone communications system comprising:
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first and second spot beams that serve respective first and second satellite cells of the satellite radiotelephone communications system and that receive respective first and second radio signals, the first radio signal including a desired satellite uplink signal transmitted from a first source in the first satellite cell using a frequency assigned to the first satellite cell and an interfering signal transmitted from at least one second source using the frequency assigned to the first satellite cell, the second radio signal including a measure of the interfering signal; and an interference-suppressing signal, the second spot beam configured to receive radio transmissions from another communications system that uses the frequency assigned to the first satellite cell processor that processes the first and second radio signals to recover the desired satellite uplink signal. - View Dependent Claims (67, 68, 69, 70, 71, 72, 73, 74, 75)
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76. A system comprising:
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a first satellite reception path that serves a satellite cell of a first satellite radiotelephone communications system and receives a first radio signal therefrom, the received first radio signal including a desired satellite uplink signal transmitted from a first source using a frequency assigned to the satellite cell and an interfering signal transmitted from at least one second source communicating with a second satellite radiotelephone communications system using the frequency assigned to the satellite cell; a second satellite reception path that preferentially receives transmissions from a coverage area of the second satellite radiotelephone communications system and that receives a second radio signal including a measure of the interfering signal; and an interference-suppressing signal processor that processes the first and second radio signals to recover the desired satellite uplink signal. - View Dependent Claims (77, 78, 79, 80, 81, 82, 83)
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84. A system comprising:
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a first satellite configured to preferentially receive transmissions from a coverage area of a first satellite radiotelephone communications system and that receives a first radio signal including a desired satellite uplink signal transmitted from a first source in the coverage area of the first satellite radiotelephone communications system using a frequency and an interfering signal transmitted from at least one second source communicating with a second satellite communications system using the frequency; an antenna configured to receive feeder link transmissions from a second satellite configured to preferentially receive transmissions from a coverage area of the second satellite communications system and that receives a second radio signal including a measure of the interfering signal; and an interference-suppressing signal processor that processes the first and second radio signals to recover the desired satellite uplink signal. - View Dependent Claims (85, 86, 87, 88)
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Specification