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Method for configuring reference signal for three-dimensional MIMO in wireless communication system and apparatus therefor

  • US 10,122,431 B2
  • Filed: 03/31/2015
  • Issued: 11/06/2018
  • Est. Priority Date: 10/01/2014
  • Status: Active Grant
First Claim
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1. A method of reporting channel status information (CSI) for multiple input multiple output (MIMO) based beamforming by a user equipment (UE) in a wireless communication system, the method comprising:

  • receiving reference signal configuration information including two or more reference signal resources information through a higher layer;

    receiving CSI process information through the higher layer;

    receiving, from a base station, a reference signal based on the reference signal configuration information; and

    reporting, to the base station, the CSI calculated based on the CSI process information and the received reference signal,wherein the CSI process information includes a reference signal type indicator indicating a mapping relation between the reference signal configuration information and multiple,wherein the reference signal type indicator indicates a first type reference signal configuration or a second type reference signal configuration,wherein, if the reference signal type indicator indicates the first type reference signal configuration, the two or more reference signal resources information correspond to all columns or all rows of the multiple antennas, andwherein, if the reference signal type indicator indicates the second type reference signal configuration, one of the two or more reference signal resources information corresponds to a row in the multiple antennas and another of the two or more reference signal resources information corresponds to a column in the multiple antennas.

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