Satellite, mobile terminal, and complementary terrestrial component in OFDM based multi-beam satellite system reusing the same frequency band for all the beams, and communication method thereof
First Claim
1. A communication method of a mobile terminal in an orthogonal frequency division multiplexing (OFDM) based multi-beam satellite system reusing the same frequency band for all the beams, the method comprising:
- receiving location information of the mobile terminal from a satellite to determine a location of the mobile terminal within multiple beams;
determining a subcarrier group for a communication with the satellite according to the location of the mobile terminal within the multiple beams; and
communicating with the satellite using the subcarrier group for the communication with the satellite.
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Accused Products
Abstract
Provided is a communication method of a mobile terminal in an orthogonal frequency division multiplexing (OFDM) based multi-beam satellite system reusing the same frequency band for all the beams, the method including: receiving location information of the mobile terminal from a satellite to determine a location of the mobile terminal within multiple beams; determining a subcarrier group for a communication with the satellite according to the location of the mobile terminal within the multiple beams; and communicating with the satellite using the subcarrier group for the communication with the satellite.
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Citations
15 Claims
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1. A communication method of a mobile terminal in an orthogonal frequency division multiplexing (OFDM) based multi-beam satellite system reusing the same frequency band for all the beams, the method comprising:
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receiving location information of the mobile terminal from a satellite to determine a location of the mobile terminal within multiple beams; determining a subcarrier group for a communication with the satellite according to the location of the mobile terminal within the multiple beams; and communicating with the satellite using the subcarrier group for the communication with the satellite. - View Dependent Claims (2, 3)
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4. A communication method of a satellite in an OFDM based multi-beam satellite system reusing the same frequency band for all the beams, the method comprising:
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verifying location information of the mobile terminal using data, received from the mobile terminal, to determine a location of the mobile terminal within multiple beams; determining a subcarrier group for a communication with the mobile terminal according to the location of the mobile terminal within the multiple beams; and communicating with the mobile terminal using the subcarrier group for the communication with the mobile terminal. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A communication method of a complementary terrestrial component in an OFDM based multi-beam satellite system reusing the same frequency band for all the beams, the method comprising:
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sensing a satellite signal when data is received from a mobile terminal; recognizing a subcarrier group used for a communication between a satellite and the mobile terminal, using the satellite signal; and communicating with the mobile terminal using the remaining subcarrier groups excluding the recognized subcarrier group. - View Dependent Claims (11)
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12. A mobile terminal in an OFDM based multi-beam satellite system reusing the same frequency band for all the beams, the mobile terminal comprising:
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a location decision unit to receive location information of the mobile terminal from a satellite, and to determine a location of the mobile terminal within multiple beams; a subcarrier group decision unit to determine a subcarrier group for a communication with the satellite according to the location of the mobile terminal within the multiple beams; and a communication unit to communicate with the satellite using the subcarrier group for the communication with the satellite. - View Dependent Claims (13)
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14. A complementary terrestrial component in an OFDM based multi-beam satellite system reusing the same frequency band for all the beams, the complementary terrestrial component comprising:
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a satellite signal sensing unit to sense a satellite signal when data is received from a mobile terminal; a subcarrier group recognition unit to recognize a subcarrier group used for a communication between a satellite and the mobile terminal, using the satellite signal; and a communication unit to communicate with the mobile terminal using the remaining subcarrier groups excluding the recognized subcarrier group. - View Dependent Claims (15)
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Specification