Operation for 3d beam forming in a wireless communication system

A user equipment for operating in a wireless communication system, the UE comprising:

• a transceiver adapted to transmit or receive signals over the air;
• a microprocessor electrically connected to the transceiver and adapted to control the transceiver to:
• receive reference signals from one or more base stations (eNBs);
• report feedback information comprising precoding matrix information to the one or more eNBs, wherein the precoding matrix information indicates a first type precoding matrix for a horizontal direction and a second type precoding matrix for a vertical direction;
• and
• receive signals from the eNBs, wherein the signals are precoded based on a third type precoding matrix for beam forming both on the horizontal direction and the vertical direction.