Method of transmitting reference signal for channel state change measurement and apparatus therefor

  • US 11,075,734 B2
  • Filed: 03/20/2019
  • Issued: 07/27/2021
  • Est. Priority Date: 01/09/2017
  • Status: Active Grant
First Claim
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1. A method for receiving reference signals by a user equipment (UE) in wireless communication, the method comprising:

  • receiving, from a base station (BS), resource information;

    receiving, from the BS, a first sequence for a Demodulation Reference Signal (DMRS) based on the resource information; and

    receiving, from the BS, a second sequence for a Phase Tracking Reference Signal (PTRS),wherein the resource information includes information on a first resource element (RE) group for the DMRS in an orthogonal frequency division multiplexing (OFDM) symbol, and the information informs the UE whether or not a second RE group in the OFDM symbol is used for receiving data,wherein each of the first RE group and the second RE group includes REs having a predetermined interval in the OFDM symbol,wherein the first sequence for the DMRS is received in the first RE group and the data is received or not in the second RE group based on the resource information,wherein elements of the second sequence are determined among the elements of the first sequence at equal element intervals, andwherein the PTRS is received every N OFDM symbols, where N is greater than 1.

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