This method is a method for notifying of downlink control information indicative of a PDSCH multiplexing starting position. In this method, bits representing a PDSCH multiplexing starting position are included in the DCI and are dynamically notified. In this case, the downlink control information is associated with the PDSCH multiplexing starting position. The mobile terminal apparatus has a table (table that associates the bits included in the DCI with the PDSCH multiplexing starting position) as shown in FIG. 16, recognizes the PDSCH multiplexing starting position from the bits notified by the DCI, and demodulates data signals from the multiplexing starting position.

The table as shown in FIG. 16 associates the bits included in the DCI with the PDSCH multiplexing starting position, bits “00” represent “the first symbol”, bits “01” represent “the second symbol”, bits “10” represent “the third symbol”, and bits “11” represent “the fourth symbol”. For example, bits “01” represent the PDSCH multiplexing starting position (the third symbol) of FIG. 17. In addition, the table as shown in FIG. 16 is one example, and the invention is not limited thereto.

(Sixth Method)

This method is a method for notifying of a PDSCH multiplexing starting position by higher-layer signaling (for example, RRC signaling). In this method, the PDSCH multiplexing starting position is notified semi-statically. The PDSCH multiplexing starting position notified by higher-layer signaling may be the bit information used in the above-mentioned fifth method.