METHOD OF DETERMINING ANTENNA PORT OF REFERENCE SIGNAL FOR DOWNLINK CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM AND APPRATUS THEREOF

摘要

PURPOSE: A method for determining a reference signal (RS) antenna port for a downlink control channel in a wireless communication system and an apparatus for the same are provided to efficiently determine the antenna port of a demodulation-RS (DM-RS) based on the number of control channel elements per source block. CONSTITUTION: Antenna ports are allocated for one or more control channel elements. By using the DM-RS of the allocated antenna port, a downlink control channel is transmitted to a terminal. The antenna port of the DM-RS is determined on the basis of the number of control channel elements per source block. The number of the control channel elements per source block is varied according to the setting of a sub frame in which the downlink control channel is transmitted. The number of the control channel elements per source block is two or four.