BASE STATION, WIRELESS COMMUNICATION TERMINAL, WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD

摘要

Disclosed are a base station, a wireless communication terminal, a wireless communication system, and a wireless communication method. The base station can be used in coordinated multi-point transmission and comprises: a channel quality obtaining unit for obtaining uplink channel quality between a user equipment and a coordinated base station; a channel quality determination unit for comparing the obtained uplink channel quality with a quality threshold to determine whether the uplink channel quality is good or bad; a feedback control unit for determining, according to a determination result, whether to allow the user equipment to feed back channel state information to the corresponding coordinated base station; and a sending unit for sending information, about how to feed back the channel status information, to the user equipment. When the determination result is that the uplink channel quality is better than channel quality represented by the quality threshold, the feedback control unit determines to allow the user equipment to feed back the channel status information to the corresponding coordinated base station; when the determination result is that the uplink channel quality is poorer than the channel quality represented by the quality threshold, the feedback control unit determines not to allow the user equipment to feed back the channel status information to the corresponding coordinated base station.

主权项

1. A base station which can be used 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.