| 摘要 |
PROBLEM TO BE SOLVED: To provide a physical structure of expansion physical downlink control channel and use of a reference signal.SOLUTION: A method for receiving downlink control information by a user terminal (UE) of OFDM/OFDMA system via an expansion physical downlink control channel (ePDCCH) includes a step for associating the ePDCCH with an expansion control channel element (eCCE) set, a step for decoding the downlink control information for the reference signal of a first specific antenna port, based on the logical address of a single eCCE, when the UE has decoded the downlink control information by using the single eCCE for ePDCCH transmission, and a step for decoding the downlink control information for the reference signal of a second specific antenna port, based on the logical address of a specific eCCE between a plurality of eCCEs, when the UE has decoded the downlink control information by using a single eCCE for ePDCCH transmission.SELECTED DRAWING: Figure 11 |
