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APPARATUS AND METHODS FOR ADAPTIVELY RESUMING RADIO CHANNEL ESTIMATION

  • US 20130322586A1
  • Filed: 05/03/2013
  • Published: 12/05/2013
  • Est. Priority Date: 05/03/2012
  • Status: Active Grant
First Claim
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1. A method of performing radio channel estimation after an interruption in reception between a mobile device and a network, comprising:

  • determining a duration of the interruption in reception;

    determining a channel estimation window based at least in part on the duration of the interruption, wherein the channel estimation window is characterized by a channel estimation window length and a channel estimation window shape; and

    performing channel estimation in accordance with the determined channel estimation window;

    wherein;

    when the determined duration is less than a first threshold;

    the channel estimation window length comprises a first channel estimation window length; and

    the channel estimation window shape is determined before the interruption in reception;

    when the determined duration is greater than the first threshold and less than a second threshold;

    the channel estimation window length comprises a second channel estimation window length and is based at least in part on a noise estimate and a maximum delay spread; and

    the channel estimation window shape is based at least on an unevenly weighted distribution; and

    when the determined duration is greater than the second threshold;

    the channel estimation window length comprises a third channel estimation window length and is based at least in part on a characteristic of a radio channel of the network; and

    the channel estimation window shape comprises a third channel estimation window shape and is based at least in part on an evenly weighted distribution.

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