| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve communication efficiency of a terminal receiving large interference from another base station, in a distributed antenna system forming a plurality of antenna groups. <P>SOLUTION: When a base station other than the distributed antenna system provides the time or the frequency of small transmission power, an antenna group formation unit 16 estimates a terminal communication area using an uplink reference signal transmitted by the terminal, calculates interference power of an outside system to a communication area of the terminal, based on the reception power of the outside system reported from the terminal, calculates the interference power of the outside system to each antenna 2-1 to 2-12 by averaging the interference power of the outside system reported from a plurality of terminals, and according to the magnitude of the calculated interference power of the outside system, determines the antennas 2-1 to 2-12 constituting an antenna group. <P>COPYRIGHT: (C)2013,JPO&INPIT |
