Method and apparatus for transmitting downlink signal in wireless communication system

摘要

A method and apparatus for transmitting a downlink signal in a wireless communication system are disclosed. An apparatus for receiving a downlink (DL) signal from a base station (BS) and transmitting the received DL signal to a user equipment (UE) in a wireless communication includes: a plurality of reception antennas configured to receive DL signals from the BS; a processor configured to map the received DL signals to at least one transmission antenna; and a plurality of transmission antennas configured to transmit the received DL signals to the UE, wherein the processor is configured to select M transmission antenna(s) from among the plurality of transmission antennas (Ntx,REP Tx antennas), and map the received L signals to the M transmission antenna(s), and the number of the transmission antennas (Ntx,REP) is higher than the number of the reception antennas (Nrx,REP), and M is the number of the transmission antennas which is used to transmit the received DL signals.

主权项

1. An apparatus for receiving a plurality of downlink (DL) signals from a base station (BS) and transmitting the plurality of received DL signals to a user equipment (UE) in a wireless communication system, the apparatus comprising:
a plurality of reception antennas (Nrx,REP Rx antennas) configured to receive the plurality of DL signals from the BS; a processor configured to map the plurality of received DL signals to at least one transmission antenna; and a plurality of transmission antennas (Ntx,REP Tx antennas) configured to transmit the received plurality of DL signals to the UE, wherein the processor is configured to select M Tx antennas from among the Ntx,REP Tx antennas, and map the received plurality of DL signals to the M Tx antennas, and wherein the number of the Tx antennas (Ntx,REP) is higher than the number of the Rx antennas (Nrx,REP), and M is the number of the Tx antennas which is used to transmit the plurality of received DL signals, and wherein the processor is configured to differently map the plurality of received DL signals to the M Tx antennas depending on whether or not M is higher than Nrx,REP.