The invention discloses a radio communication device comprising a mapping unit and a transmitting unit. The mapping unit is used to map first reference signals used for calculating communication quality identifiers in reference blocks of all of sub-frames, and all of the reference signals are used for a first terminal of a first communication system and a second terminal of a second communication system. The mapping unit is used to map second reference signals used for calculating communication quality identifiers in a part of resource blocks of all of the sub-frames, and the above mentioned part is provided with predetermined period between the sub-frames, and the second reference signals are used for the second terminals. The transmitting unit is used to the mapped first reference signals and the mapped second reference signals. The mapping unit is only used to map the data signals corresponding to the first terminal to the resource blocks, and is used to map the second reference signals.