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Mobile terminal decode failure procedure in a wireless local area network

  • US 6,363,267 B1
  • Filed: 04/07/1999
  • Issued: 03/26/2002
  • Est. Priority Date: 04/07/1999
  • Status: Active Grant
First Claim
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1. A method for implementing a mobile terminal decode failure procedure in a wireless local area network, comprising the steps of:

  • sending a sleep request from a mobile terminal in the network to an access point in the network, wherein the sleep request includes a proposed sleep interval;

    receiving a sleep reservation in the mobile terminal from the access point, wherein the sleep reservation includes a sleep duration and a sleep start time for the mobile terminal;

    the mobile terminal going to sleep at the sleep start time;

    the mobile terminal listening, at the end of the sleep duration, for a wakeup announcement in a Medium Access Control (MAC) frame sent by an access point in the network;

    determining in the mobile terminal, whether the mobile terminal has failed to properly decode a wakeup announcement in a Medium Access Control (MAC) frame sent by the access point in the network; and

    in the mobile terminal, in response to a determined decode failure, remaining awake to monitor subsequent MAC frames until either a predetermined number of MAC frames transpire, or a wakeup announcement intended to awaken the mobile terminal is properly decoded, whichever occurs first.

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