Patent ID: 8559991
Filing Date: 2013-10-15
Classification: H04W

Abstract:
1. A network apparatus comprising: a receiver configured to receive, from each of a plurality of terminals, signal quality information indicating the quality of a signal received from each of a plurality of base stations; a terminal grouping unit configured to group the plurality of terminals into a plurality of terminal groups, based on the signal quality information, and to respectively associate first, second and third base stations, of the plurality of base stations, with first, second and third terminal groups, of the plurality of terminal groups; and a terminal selection unit configured to select concurrently a first target terminal from the first terminal group, a second target terminal from the second terminal group and a third target terminal from the third terminal group, wherein: the association of a base station with a terminal group identifies which base station is assigned to transmit data to the terminal group, and the network apparatus causes the second base station to adjust the phase of its transmission so as to be received, by the first target terminal, in alignment with the phase of a transmission by the third base station, causes the first base station to adjust the phase of its transmission so as to be received, by the second target terminal, in alignment with the phase of a transmission by the third base station and causes the first base station to adjust the phase of its transmission so as to be received, by the third target terminal, in alignment with the phase of a transmission by the second base station, and the terminal selection unit configured to select concurrently the first, second, third target terminals based on a total data rate with respect to a combination of the each terminal of the first, second and third terminal groups.