COGNITIVE RADIO COMMUNICATION SYSTEM USING MULTIPLE INPUT MULTIPLE OUTPUT COMMUNICATION SCHEME
First Claim
Patent Images
1. A cognitive radio base station comprising:
- a plurality of antennas;
a group setting unit to set at least one sensing terminal group that includes at least one sensing terminal among a plurality of terminals; and
a signal generator to generate a transmission signal to transmit the transmission signal using channels formed between the plurality antennas and the plurality of terminals, so that the at least one sensing terminal is accorded a sensing time.
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Abstract
A cognitive radio communication system using a multiple input multiple output (MIMO) communication technology is provided. A cognitive radio base station includes a plurality of antennas, a group setting unit to set at least one sensing terminal group that includes at least one sensing terminal among a plurality of terminals, and a signal generator to generate a transmission signal to transmit the transmission signal using channels formed between the plurality antennas and the plurality of terminals, so that the at least one sensing terminal is accorded a sensing time.
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Citations
27 Claims
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1. A cognitive radio base station comprising:
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a plurality of antennas; a group setting unit to set at least one sensing terminal group that includes at least one sensing terminal among a plurality of terminals; and a signal generator to generate a transmission signal to transmit the transmission signal using channels formed between the plurality antennas and the plurality of terminals, so that the at least one sensing terminal is accorded a sensing time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A cognitive ratio base station comprising:
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a group setting unit to set at least one sensing terminal group that includes at least one sensing terminal to perform a fine sensing among a plurality of terminals; and an uplink communication terminal decision unit to determine at least one uplink communication terminal to perform an uplink communication among the plurality of terminals, so that the at least one sensing terminal is accorded a sensing time in an uplink time interval. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of operating a sensing terminal among a plurality of cognitive radio terminals, the method comprising:
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recognizing by the sensing terminal the existence of a primary user according to a fast sensing scheme to report to a cognitive radio base station information associated with the existence of the primary user; and sensing by the sensing terminal a signal of the primary user while the cognitive radio base station transmits a transmission signal, wherein the cognitive radio base station transmits the transmission signal via a plurality of antennas, so that the sensing terminal is accorded a sensing time. - View Dependent Claims (20, 21)
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22. A method of operating a cognitive radio base station, the method comprising:
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setting by the cognitive radio base station at least one sensing terminal group that includes at least one sensing terminal among a plurality of terminals; generating by the cognitive radio base station a transmission signal to transmit the transmission signal using channels formed between a plurality of antennas and the plurality of terminals, so that the at least one sensing terminal is accorded a sensing time; and transmitting by the cognitive radio base station the transmission signal to the plurality of terminals via the plurality of antennas. - View Dependent Claims (23, 24)
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25. A method of operating a cognitive radio base station, the method comprising:
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setting by the cognitive radio base station at least one sensing terminal group that includes at least one sensing terminal to perform a fine sensing among a plurality of terminals; and determining by the cognitive radio base station at least one uplink communication terminal to perform an uplink communication among the plurality of terminals, so that the at least one sensing terminal is accorded a sensing time in an uplink time interval. - View Dependent Claims (26)
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27. A computer-readable storage medium storing a program to operate a sensing terminal of a cognitive radio communication system, comprising instructions to cause the sensing terminal to:
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recognize the existence of a primary user according to a fast sensing scheme to report to a cognitive radio base station information associated with the existence of the primary user; and sense a signal of the primary user while the cognitive radio base station transmits a transmission signal, wherein the cognitive radio base station transmits the transmission signal via a plurality of antennas, so that the sensing terminal is accorded a sensing time.
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Specification