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Method and apparatus for adaptive bluetooth low power discovery and wake up

  • US 8,307,231 B2
  • Filed: 11/17/2009
  • Issued: 11/06/2012
  • Est. Priority Date: 11/19/2008
  • Status: Active Grant
First Claim
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1. A method of low power discovery (LPD) that extends the battery life of a portable Wi Fi device or portable media player (PMP) using IEEE 802.11 Wireless Local Area Network (WLAN) interface by ensuring that the portable Wi Fi device or PMP host processor is only on when in designated 802.11 coverage or when needed by a user, by employing probabilistic channel scanning comprising:

  • A) uploading dynamic wake-up triggers to Media Access Control (MAC) firmware;

    B) bringing an Access Terminal (AT) host equipped with an 802.11 interface to an advanced configuration and power interface (ACPI) state S3 or equivalent sleep state prior to the portable Wi Fi device or portable media player going to sleep; and

    C) programming the 802.11 WLAN to wake up based on the uploaded triggers.

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