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OTDOA In LTE Networks

  • US 20160316445A1
  • Filed: 04/22/2016
  • Published: 10/27/2016
  • Est. Priority Date: 04/24/2015
  • Status: Active Grant
First Claim
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1. A computer implemented method for providing OTDOA timing information comprising:

  • defining an FFT window pair for estimating a value of reference signal time difference “

    RSTD”

    for at least one base station and a reference cell;

    receiving a PRS from the at least one base station and the reference cell;

    executing an FFT per OFDM symbol of the PRS for each FFT window of the FFT window pair;

    obtaining a first FFT output vector per OFDM symbol of each FFT window;

    for each first output vector, descrambling tones corresponding to the known position of the PRS, wherein all other tones are set to zero;

    combining vectors based on respective first FFT output vectors;

    executing an iFFT to convert to the time domain; and

    calculating an estimated value of reference signal time difference “

    RSTD”

    for the at least one base station and the reference cell.

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