METHOD FOR CANCELLING INTERFERENCE IN UPLINK OF FEMTO CELL ENVIRONMENT, MACRO BASE STATION AND FEMTO BASE STATION FOR SUPPORTING THAT METHOD

摘要

PURPOSE: A method for cancelling interference in uplink of femto cell environment, and a macro base station and a femto base station for supporting the same are provided to alleviate the interference on a service terminal since use resource for the service terminal is separately allocated. CONSTITUTION: Information to receive SRS(Sounding Reference Signal) of a first terminal is transmitted to a macro base station(S200). A macro base station receives SRS of a first terminal(S210). The macro base station decodes SRS of the first terminal(S220). The macro base station produces the first interference power(S230). The macro base station determines the interference of the first terminal(S240). The sending power information of the first terminal which prevents the interference of the first terminal is produced(S250). The macro base station transmits the uplink transmission power decrease request of the first terminal to a femto base station(S260). The femto base station resets the uplink transmission power of the first terminal(S270).