A base station for coordinated multiple points transmission, comprising: a channel quality acquisition unit adapted to acquire uplink channel qualities of uplink channels between a user equipment and coordinated base stations; a channel quality judgment unit adapted to judge whether the uplink channel qualities are good or bad by comparing the acquired uplink channel qualities with a first quality threshold; a feedback control unit adapted to determine whether the user equipment is allowed to feed back channel state information to corresponding coordinated base stations based on the judgment result; and a transmitting unit adapted to transmit information indicating how to feed back the channel state information to the user equipment, wherein the feedback control unit determines that the user equipment is allowed to feed back the channel state information to the corresponding coordinated base stations when the judgment result indicates that the uplink channel qualities are better than a channel quality represented by the first quality threshold; and the feedback control unit determines that the user equipment is not allowed to feed back the channel state information to the corresponding coordinated base stations when the judgment result indicates that the uplink channel qualities are worse than the channel quality represented by the first quality threshold, a channel state information number determination unit adapted to determine the number of the channel state information to be fed back based on a definition on the channel state information; a first feedback mode determination unit adapted to determine a feedback mode to be used by the user equipment based on the determined number of the channel state information to be fed back, wherein, the first feedback mode determination unit determines a feedback mode combining time division multiplexing and non-time division multiplexing as the feedback mode to be used by the user equipment when the number of the channel state information to be fed back is larger than a predetermined threshold; and the first feedback mode determination unit determines a feedback mode using a single one of time division multiplexing and non-time division multiplexing as the feedback mode to be used by the user equipment when the number of the channel state information to be fed back is less than or equal to the predetermined threshold. a channel quality acquisition unit adapted to acquire uplink channel qualities of uplink channels between a user equipment and coordinated base stations; a channel quality judgment unit adapted to judge whether the uplink channel qualities are good or bad by comparing the acquired uplink channel qualities with a first quality threshold; a feedback control unit adapted to determine whether the user equipment is allowed to feed back channel state information to corresponding coordinated base stations based on the judgment result; and a transmitting unit adapted to transmit information indicating how to feed back the channel state information to the user equipment, wherein the feedback control unit determines that the user equipment is allowed to feed back the channel state information to the corresponding coordinated base stations when the judgment result indicates that the uplink channel qualities are better than a channel quality represented by the first quality threshold; and the feedback control unit determines that the user equipment is not allowed to feed back the channel state information to the corresponding coordinated base stations when the judgment result indicates that the uplink channel qualities are worse than the channel quality represented by the first quality threshold, a channel state information number determination unit adapted to determine the number of the channel state information to be fed back based on a definition on the channel state information; a first feedback mode determination unit adapted to determine a feedback mode to be used by the user equipment based on the determined number of the channel state information to be fed back, wherein, the first feedback mode determination unit determines a feedback mode combining time division multiplexing and non-time division multiplexing as the feedback mode to be used by the user equipment when the number of the channel state information to be fed back is larger than a predetermined threshold; and the first feedback mode determination unit determines a feedback mode using a single one of time division multiplexing and non-time division multiplexing as the feedback mode to be used by the user equipment when the number of the channel state information to be fed back is less than or equal to the predetermined threshold.