Apparatus and method of access system selection for heterogeneous wireless environment

PURPOSE: An access system selection device in heterogeneous wireless communication system and a method thereof are provided to select an access system based on a plurality of attributes and to receives a service, thereby preventing a service quality conveniently. CONSTITUTION: An access system specifying module(205) connects to an access system by activation of a relevant module in an access system. A CPC(Cognitive Pilot Channel, Common Pilot Channel) specific module(210) receives information of each access system and frequency allocation information of each access system and a load level from a CPC server. If a QoS(Quality of Service) is under the predetermined threshold value, a control unit(220) selects an optimum access system.