Patent ID: 8929879
Filing Date: 2015-01-06
Classification: H04W

Abstract:
1. A method for controlling an operation mode of a femtocell base station, the method comprising: receiving a channel quality indicator of a downlink channel between the femtocell base station and a terminal, which is transmitted from the terminal; calculating a communication quality between the femtocell base station and the terminal based on the channel quality indicator; determining whether or not an interference factor has occurred in communication between the femtocell base station and the terminal based on the communication quality; and changing or maintaining an operation mode of the femtocell base station based on the determination result, wherein the changing or maintaining the operation mode includes changing the operation mode of the femtocell base station to a mixed user access mode when it is determined that the interference factor has occurred during a closed user access mode of the femtocell base station, wherein the mixed user access mode provides closed subscriber group (CSG) subscribers with a closed type service, and CSG non-subscribers with an open type service to offer differentiated services to each group; and after the changing or maintaining the operation mode: