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Mutual information based signal to interference plus noise ratio estimator for radio link monitoring

  • US 9,363,817 B2
  • Filed: 01/21/2010
  • Issued: 06/07/2016
  • Est. Priority Date: 01/21/2010
  • Status: Expired due to Fees
First Claim
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1. A method, comprising:

  • using a quality mapping approach to average mutual information or received bit information rate values corresponding to narrowband signal to interference plus noise ratio values in frequency between resource blocks of a resource grid structure, to produce an averaged mutual information domain value;

    estimating downlink radio link quality from the averaged mutual information domain value by mapping the averaged mutual information domain value back to a wideband signal to interference plus noise ratio value covering a part up to a whole of system bandwidth;

    further averaging the wideband signal to interference plus noise ratio value in time to provide a time-averaged signal to interference plus noise ratio value; and

    using the time-averaged signal to interference plus noise ratio value as a downlink radio link quality estimate for radio link monitoring.

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