METHOD OF TRANSMITTING DEMODULATION REFERENCE SIGNAL OF FAKE MULTIMEDIA BROADCASTING SINGLE FREQUENCY NETWORK SUBFRAME

摘要

PURPOSE: A DM-RS transmission method of a fake MBSFN sub frame is provided to improve a performance of channel estimation by arranging a DM-RS pattern on a time shaft which is maximally dispersed. CONSTITUTION: A DM-RS(Demodulation Reference Signal) pattern is arranged from a third symbol section of a sub frame. If it is a MBSFN(Multimedia Broadcasting Single Frequency Network) sub frame, a resource of a control channel is allocated until a second symbol section. If a control channel is until a second symbol section, a PDCCH(Physical Downlink Control Channel) is used only in a uplink resource grant. A DM0RS pattern for a fake MBSFN sub frame is arranged in a second symbol section. A DM-RS of a first antenna and a DM-RS of a second antenna is arranged in the same RE(Resource Element)s by a CDM(Code-Division Multiplexing) method.