Method and system for stable throughput of cognitive radio
First Claim
1. A cognitive radio system comprising:
- a first transmitter in communication with a first receiver via a wireless channel, wherein the first transmitter receives a plurality of first packets and transmits the first packets to the first receiver via the channel; and
a second transmitter in communication with a second receiver and the first receiver via the channel, wherein the second transmitter receives a plurality of second packets, receives the plurality of first packets from the first transmitter, and transmits the second packets to the second receiver via the channel,wherein the second transmitter is configured to detect an idle state of the channel, andwherein, upon detecting the idle state of the channel, the second transmitter is configured selectively to transmit at least one of the second packets to the second receiver or to relay at least one of the first packets to the first receiver.
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Accused Products
Abstract
In one embodiment, a cognitive radio system includes a first transmitter in communication with a first receiver via a wireless channel. The first transmitter receives a plurality of first packets, and transmits the first packets to the first receiver via the channel. A second transmitter in communication with a second receiver and the first receiver via the channel receives a plurality of second packets, receives the plurality of first packets from the first transmitter, and transmits the second packets to the second receiver via the channel. The second transmitter is configured to detect an idle state of the channel. Upon detecting the idle state of the channel, the second transmitter is configured selectively to transmit at least one of the second packets to the second receiver or to relay at least one of the first packets to the first receiver.
28 Citations
20 Claims
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1. A cognitive radio system comprising:
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a first transmitter in communication with a first receiver via a wireless channel, wherein the first transmitter receives a plurality of first packets and transmits the first packets to the first receiver via the channel; and a second transmitter in communication with a second receiver and the first receiver via the channel, wherein the second transmitter receives a plurality of second packets, receives the plurality of first packets from the first transmitter, and transmits the second packets to the second receiver via the channel, wherein the second transmitter is configured to detect an idle state of the channel, and wherein, upon detecting the idle state of the channel, the second transmitter is configured selectively to transmit at least one of the second packets to the second receiver or to relay at least one of the first packets to the first receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of operating a cognitive radio system, the method comprising:
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directing a plurality of first packets to a first transmitter for transmission to a first receiver over a wireless channel, and to a second transmitter; directing a plurality of second packets to the second transmitter for transmission to a second receiver over the channel; transmitting at least one of the first packets from the first transmitter to the first receiver; detecting at the second transmitter an idle state of the channel; and upon the detection of the idle state of the channel, selectively transmitting at least one of the second packets from the second transmitter to the second receiver or relaying the at least one of the first packets from the second transmitter to the first receiver. - View Dependent Claims (11, 12)
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13. A radio system having at least two single-user communication links, a first link being licensed to use a spectral resource and a second link being unlicensed, the system comprising:
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a first receiver coupled to a first transmitter by a communication channel; and a second receiver coupled to a second transmitter by the communication channel, wherein, upon detecting an idle state of the communication channel, the second transmitter selectively transmits packets to the second receiver or relays packets to the first receiver. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification