APPARATUS AND METHOD FOR HIERARCHICAL RATE SPLITTING IN HIERARCHICAL CELL COMMUNICATION SYSTEM

摘要

PURPOSE: A hierarchical rate splitting method in a hierarchical cell communication system and an apparatus thereof are provided to adaptively determine a hierarchical rate splitting mode based on an INR(Interference to Noise Ratio) of a pico terminal and a channel state of a macro base station and a macro terminal. CONSTITUTION: A macro base station determines a hierarchical rate splitting mode in a specific frequency band based on a channel state of a macro base station and a macro terminal(1020). The macro base station determines transmission power in the specific frequency band according to the hierarchical rate splitting mode. The hierarchical rate splitting mode defines the kind of rate splitting messages which are generated in the macro base station, a first pico base station, and a second pico base station.