APPARATUS AND METHOD FOR COMMUNICATION IN COGNITIVE RADIO NETWORK
First Claim
1. A Cognitive Radio (CR) apparatus for performing communication in a CR network, comprising:
- a communication unit configured to measure a channel estimation signal, transmit measured channel state information to a master device, and, when a Quiet Period (QP) of a reference channel arrives, make a communication channel transition to a candidate channel and perform communication; and
a channel information management unit configured to receive and manage the channel state information measured by the communication unit and channel information comprising a candidate channel, into which a channel transition is to be made during a QP of the reference channel, received from the master device and control channel transition of the communication unit based on the channel information.
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Abstract
A CR apparatus for performing communication in a CR network includes: a communication unit configured to measure a channel estimation signal, transmit measured channel state information to a master device, and, when a QP of a reference channel arrives, make a communication channel transition to a candidate channel and perform communication; and a channel information management unit configured to receive and manage the channel state information measured by the communication unit and channel information comprising a candidate channel, into which a channel transition is to be made during a QP of the reference channel, received from the master device and control channel transition of the communication unit based on the channel information.
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Citations
20 Claims
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1. A Cognitive Radio (CR) apparatus for performing communication in a CR network, comprising:
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a communication unit configured to measure a channel estimation signal, transmit measured channel state information to a master device, and, when a Quiet Period (QP) of a reference channel arrives, make a communication channel transition to a candidate channel and perform communication; and a channel information management unit configured to receive and manage the channel state information measured by the communication unit and channel information comprising a candidate channel, into which a channel transition is to be made during a QP of the reference channel, received from the master device and control channel transition of the communication unit based on the channel information. - View Dependent Claims (2, 3, 4, 5)
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6. A master apparatus for performing communication in a CR network, comprising:
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a channel signal estimation unit configured to generate a channel estimation signal for estimation of a channel in the CR network; a communication unit configured to transmit the signal generated by the channel signal estimation unit and perform communication through a reference channel and a candidate channel; a channel information management unit configured to manage channel information regarding the reference channel and candidate channels, into which a channel transition is to be made in a QP of the reference channel, based on channel state information received from CR devices; and a channel allocation unit configured to allocate the reference channel or at least one of the candidate channels based on the channel information and control the communication unit. - View Dependent Claims (7, 8, 9, 10)
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11. A method for communication by a CR device of a CR network, comprising:
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making a channel transition from a reference channel to a candidate channel, when a starting point of a QP of the reference channel arrives during communication through the reference channel, in the QP; measuring a channel estimation signal in the candidate channel and reporting measured channel state information to a master device; and receiving channel information comprising a candidate channel, into which a channel transition is to be made in a QP of the reference channel, through the candidate channel into which a transition has been made. - View Dependent Claims (12, 13, 14, 15)
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16. A method for communication by a master device of a CR network, comprising:
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allocating a reference channel and a candidate channel to a CR device based on channel information; making a transition to the predetermined candidate channel based on the channel information when a starting point of a QP arrives in the reference channel; generating a channel estimation signal in the candidate channel and transmitting the channel estimation signal; and receiving channel state information from the CR devices, generating channel information regarding the reference channel and candidate channels, into which a channel transition is to be made in a QP of the reference channel, based on the channel state information, and transmitting the channel information. - View Dependent Claims (17, 18, 19, 20)
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Specification