Patent ID: 9369969
Filing Date: 2016-06-14
CPC Classification: H04W

Claim Text:
1. A power control method to mitigate interference in a heterogeneous network, the method comprising: receiving a link connection request from a femto terminal; transmitting a downlink signal when the link connection request is allowed; receiving information of a macro terminal present around a femto base station; controlling a power of the downlink signal in response to a first high interference indicator (HII) report being included in the received information of the macro terminal; controlling the power of the downlink signal based on a priority of service while satisfying predetermined constraints when a second HII report is transmitted to the femto base station and the power of the downlink signal is decreased up to a predetermined required power of the femto terminal; and increasing the power of the downlink signal when a channel quality indicator (CQI) value in the received information of the macro terminal increases, wherein the receiving the link connection request comprises allowing the link connection request when the femto terminal is verified to be registered to a closed subscriber group (CSG).