METHOD AND DEVICE FOR ADJUSTING TRANSMITTING POWER OF BASE STATION ANTENNA, AND BASE STATION

摘要

The present invention provides a method and an apparatus for adjusting transmit powers of base station antennas, and a base station. The method includes: receiving an input precoding matrix of a transmit power-limited antenna set, where the precoding matrix is determined according to a scheduling result of a user equipment communicating with a base station in each layer of each subband in a system; adjusting the precoding matrix according to a transmit power limit requirement of the transmit power-limited antenna set, a system capacity improvement requirement, or a coverage performance improvement requirement to obtain an adjusted precoding matrix; and adjusting a stream transmit power of the transmit power-limited antenna set by using the adjusted precoding matrix, where the stream transmit power of the transmit power-limited antenna set is a sum of powers for transmitting a stream of the transmit power-limited antenna set on all antennas in the transmit power-limited antenna set, and the stream is data sent in a layer of a subband in the system to the user equipment.