Patent ID: 8849338
Filing Date: 2014-09-30
Classification: H04W

Abstract:
1. A method for adjusting a channel in cognitive wireless communication, comprising the steps of: setting up connection through a cognitive pilot channel (CPC); determining whether a spectrum sensing channel (ACS) is utilized after the setup of the cognitive pilot channel (CPC); and determining whether the spectrum sensing channel (ACS) and the set-up cognitive pilot channel (CPC) interfere with each other when the spectrum sensing channel (ACS) is utilized as a result of the determination step, whereby the cognitive pilot channel (CPC) and the spectrum sensing channel (ACS) are adjusted so as not to interfere with each other, wherein the setting up step includes the step of registering information on the set-up cognitive pilot channel (CPC) in a database, and the channel adjusting method further comprises the step of registering information on the utilized spectrum sensing channel (ACS) in the database, wherein a wireless communication system that conducts the cognitive wireless communication between a plurality of cognitive terminals (CT) includes a cognitive radio base station (CRB) that controls the cognitive terminal (CT), the cognitive radio base station (CRB) includes an ACS manager that manages the utilized spectrum sensing channel (ACS), at least one cognitive terminal (CT) in the plurality of cognitive terminals (CT) includes a cognitive pilot channel (CPC) that manages the cognitive pilot channel (CPC), the CPC manager performs the steps of: registering information on the cognitive pilot channel (CPC) in the database; and registering information on the spectrum sensing channel (ACS) in the database, the ACS manager performs the steps of: determining whether the spectrum sensing channel (ACS) is utilized; and determining whether the interference is generated, and the channel adjusting method further comprising the step of causing the ACS manager to provide information necessary to be registered in the database by the CPC manager.