Method for dynamic frequency selection and system supporting the same in a cognitive radio wireless communication system
First Claim
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1. A method of dynamically selecting a frequency band for use in a Customer Premise Equipment (CPE) in a Cognitive Radio (CR) wireless communication system, comprising the steps of:
- monitoring reception of a signal from a neighboring primary Base Station (BS) in a current frequency band now in use; and
sending a sensing report message including information about the current frequency band to a CR BS, upon receipt of the signal from the primary BS.
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Abstract
Dynamic frequency selection based on CR is provided. A CR BS detects an interference-free and unused frequency band. When sensing a new BS that has great signal strength and requires the frequency band during communications in the frequency band, the CR BS releases the frequency band and dynamically selects another frequency band to avoid interference.
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Citations
16 Claims
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1. A method of dynamically selecting a frequency band for use in a Customer Premise Equipment (CPE) in a Cognitive Radio (CR) wireless communication system, comprising the steps of:
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monitoring reception of a signal from a neighboring primary Base Station (BS) in a current frequency band now in use; and
sending a sensing report message including information about the current frequency band to a CR BS, upon receipt of the signal from the primary BS. - View Dependent Claims (2, 3, 4, 5)
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6. A method of dynamically selecting a frequency band for use in a Base Station (BS) in a Cognitive Radio (CR) wireless communication system, comprising the steps of:
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sending a band move message including information about an available frequency band to a Customer Premise Equipment (CPE), when determining from a sensing report message received from the CPE that a current frequency band needs to be changed; and
changing the current frequency band to an available frequency band, upon receipt of a sensing report message in response to the band move message from the CPE. - View Dependent Claims (7, 8)
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9. A Cognitive Radio (CR) wireless communication system for dynamically selecting a frequency band for use in a CR scheme, comprising:
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a Customer Premise Equipment (CPE) for monitoring reception of a signal from a neighboring primary Base Station (BS) in a current frequency band now in use, and requesting changing the current frequency band, upon receipt of the signal from the primary BS; and
a CR BS for selecting an available frequency band upon receipt of the request of changing the current frequency band from the CPE, and notifying the CPE of the selected frequency band. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification