FIELD: radio engineering, communication.
SUBSTANCE: invention relates to communication engineering and can be used in mobile communication systems. The method includes determining a transmission rank for downlink transmission to a user terminal; determining one or more reference signal antenna ports for said downlink transmission based on said transmission rank, wherein each port is defined by an group/code pair comprising a code division multiplexing group and orthogonal security code; mapping reference signal antenna ports to group/code pairs for each transmission rank such that the code division multiplexing group and code orthogonal security code are the same for a given antenna port for every transmission rank; and transmitting downlink check symbols through said reference signal antenna ports according to the transmission rank.
EFFECT: high reliability of transmitting information using antenna port mapping for demodulating reference signals.
16 cl, 1 tbl, 7 dwg
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