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Radio communication system, radio communication method, radio base station and user terminal

  • US 10,512,049 B2
  • Filed: 07/27/2017
  • Issued: 12/17/2019
  • Est. Priority Date: 01/24/2013
  • Status: Active Grant
First Claim
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1. A user terminal in a radio communication system configured with a cell group including a plurality of cells, the user terminal comprising:

  • a receiver that receives target cell information to measure a timing difference from a radio base station of a cell; and

    a processor that measures, based on the target cell information, a timing difference between cells,wherein the user terminal determines a parameter,wherein, when the parameter is a first value, the user terminal reports the timing difference to the radio base station, andwherein, when the parameter is a second value, the user terminal does not report the timing difference to the radio base station.

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