Patent ID: 9497757
Filing Date: 2016-11-15
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method for transmitting, by a first base station, control information for inter-cell interference (ICI) reduction in a wireless communication system, the method comprising: checking a correlation value between antennas of a second base station; selecting precoding information indicating that the first base station uses precoding matrix indicators (PMIs) for a first subframe and a part of the PMIs for a second subframe, or antenna information indicating that the first base station uses antennas of the first base station for the first subframe and a part of the antennas of the first base station for the second subframe; and transmitting the precoding information or the antenna information to the second base station, wherein if the correlation value between the antennas of the second base station is higher than a predetermined value, the precoding information is selected by the first base station and is transmitted to the second base station, and wherein if the correlation value between the antennas of the second base station is lower than or equal to the predetermined value, the antenna information is selected by the first base station and is transmitted to the second base station.