System and Method for Secondary Communications with Directional Transmission
First Claim
1. A method for transmitting information by a transmitter to a receiver, the transmitter having a directional antenna, the method comprising:
- (1) setting the directional antenna to a first transmission direction;
(2) determining a state of a spectrum band in the first transmission direction;
(3) transmitting the information in the first transmission direction to the receiver in response to determining that the spectrum band state is idle and that the receiver lies within a coverage area of the transmitter; and
(4) transmitting the information in the first transmission direction to a first relay in response to determining that the spectrum band state is idle and that the receiver lies without the coverage area of the transmitter.
1 Assignment
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Accused Products
Abstract
System and method for exploiting spatial spectrum holes (SSH) in the time/spectrum/location of wireless resources. A method comprises setting a directional antenna to a first transmission direction, determining a state of a spectrum band in the first transmission direction, transmitting information in the first transmission direction to the receiver in response to determining that the spectrum band state is idle and that the receiver lies within a coverage area of a transmitter, and transmitting the information in the first transmission direction to a first relay in response to determining that the spectrum band state is idle and that the receiver lies without the coverage area of the transmitter.
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Citations
23 Claims
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1. A method for transmitting information by a transmitter to a receiver, the transmitter having a directional antenna, the method comprising:
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(1) setting the directional antenna to a first transmission direction; (2) determining a state of a spectrum band in the first transmission direction; (3) transmitting the information in the first transmission direction to the receiver in response to determining that the spectrum band state is idle and that the receiver lies within a coverage area of the transmitter; and (4) transmitting the information in the first transmission direction to a first relay in response to determining that the spectrum band state is idle and that the receiver lies without the coverage area of the transmitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for relaying a transmission by a communications relay having a directional antenna, the method comprising:
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determining a receiver from the transmission; in response to determining that the communications relay is capable of relaying the transmission to the receiver, setting the directional antenna to a first transmission direction, determining spectrum band availability in the first transmission direction, relaying a corresponding transmission directly to the receiver in response to determining that the spectrum band is idle and that the receiver lies within a coverage area of the communications relay, and relaying the corresponding transmission to a second communications relay in response to determining that the spectrum band is idle and that the receiver lies without the coverage area of the communications relay; and discarding the transmission in response to determining that the communications relay is not capable of relaying the transmission to the receiver. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A communications node comprising:
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a receiver coupled to an antenna, the receiver configured to receive signals detected by the antenna; a transmitter coupled to a directional antenna, the transmitter configured to directionally transmit signals using the directional antenna; and a processor coupled to the receiver and to the transmitter, the processor configured to sense a state of a spectrum band over which signals are transmitted and received, to relay a received transmission to the received transmission'"'"'s intended receiver or to a relay node capable of relaying the received transmission to the intended receiver, and to generate a database containing transmission relaying information. - View Dependent Claims (20, 21, 22, 23)
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Specification