Patent ID: 9537553
Date: 2017-01-03
CPC Classifications: H04B,H04W

Claim:
1. A method for adjusting transmit powers of base station antennas, comprising: receiving an input precoding matrix of a transmit power-limited antenna set, wherein 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, wherein 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, wherein the stream is data sent in a layer of a sub hand in the system to the user equipment, and wherein adjusting the precoding matrix according to the transmit power limit requirement of the transmit power-limited antenna set to obtain the adjusted precoding matrix, and adjusting the stream transmit power of the transmit power-limited antenna set by using the adjusted precoding matrix comprise: