Reducing overhead of control signal during simultaneous connection to a macro and a small LTE base station

摘要

Disclosed herein is a method for a terminal to effectively transmit a control signal when a macro cell base station that can be applied to a small cell cluster environment and a small cell base station simultaneously provide services in a heterogeneous network, and a method for reducing overhead of a control signal during connection of a plurality of LTE base stations, which can remarkably reduce the transmission frequency of control signals that are transmitted from a terminal to a small cell base station or can transmit the control signals all at once.