Apparatus and method for controlling radio resource in next mobile communication system

PURPOSE: An apparatus and a method for controlling a radio resource in a next mobile communication system are provided to efficiently allocate radio resources by determining whether or not to perform overload control by receiving collected load-related information. CONSTITUTION: A call admission controller(201) determines the admission and refusal of a basic call or handover call, and a load controller(202) allocates radio resources according to the request of the basic or handover call. The load controller checks the residual radio resources, and informs the call admission controller of the radio resources which can be allocated. The call admission controller evaluates based on the resources whether or not QoS is secured.