A METHOD AND APPARATUS FOR TRANSMITTING DATA SYMBOLS USING A BLIND INTERFERENCE ALIGNMENT SCHEME IN A WIRELESS ACCESS SYSTEM

摘要

The present invention relates to a base station cooperating method to use an integral transmission scheme of an adaptive blind interference alignment scheme and a multi-antenna precoding scheme, and an apparatus for supporting the same. According to an embodiment of the present invention, a method, which transmits, by a first base station, a data symbol by using a blind interference alignment (BIA) scheme in a wireless access system, comprises the following steps: receiving distance information with respect to two or more terminals and two or more interference base stations; setting inner and outer cell areas based on the distance information; calculating the number of inner and outer cell terminals by considering positions of the terminals; calculating an alignment pattern to use the BIA scheme based on the number of the inner cell terminals, the number of the outer cell terminals, and the number of symbol vectors to be transmitted to the terminals; calculating transmission power by considering one or more among the number of the inner cell terminals, the number of the outer cell terminals, information on total symbol transmission time with respect to the symbol vectors to be transmitted, and the number of the interference base stations; transmitting alignment pattern information related to the calculated alignment pattern, and power information related to the calculated transmission power to the base stations; and transmitting data symbols based on the alignment pattern information and the power information.