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Node unit capable of measuring delay and distributed antenna system including the same

  • US 10,396,918 B2
  • Filed: 01/09/2017
  • Issued: 08/27/2019
  • Est. Priority Date: 12/30/2014
  • Status: Active Grant
First Claim
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1. A node unit of a digital radio frequency (RF) transport system, the node unit comprising at least one processor and at least one memory to implement:

  • a delay measuring part configured to transmit a first test signal to a first adjacent node unit and measure a first round trip delay with respect to the first adjacent node unit based on the first test signal looped back by the first adjacent node unit; and

    a delay providing part configured to delay loop-back of a second test signal by the first round trip delay,wherein the second test signal is transmitted from a second adjacent node unit and looped back by the node unit.

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