Cognitive radio system resource redistributing method and system

The invention discloses a cognitive radio system resource redistributing method and system. The cognitive radio system resource redistributing method is characterized in that a network side obtains load information of an interface from a network element node; and when resources are redistributed and triggered, the network side redistributes the resources according to the load information of the interface. The invention also discloses a cognitive radio system resource redistributing system; and when the resources are redistributed and triggered, the cognitive radio system resource redistributing system redistributes the resources according to the obtained load information of the interface so that the radio resources can be reasonably distributed, the spectrum efficiency is improved, the condition of redistributed radio resource malfunction is avoided, and the success rate of the radio resource redistribution is increased.