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Wireless local area network supporting multiple slot times

  • US 20040246932A1
  • Filed: 06/13/2003
  • Published: 12/09/2004
  • Est. Priority Date: 11/11/2002
  • Status: Active Grant
First Claim
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1. A method for operating a Basic Service Set (BSS)/Independent Basic Service Set (IBSS) of a Wireless Local Area Network (WLAN) that services a plurality of WLAN devices (STAs), wherein at least one STA of the plurality of STAs supports multiple slot times, the method comprising:

  • initiating operation of the BSS/IBSS of the WLAN using a short slot time;

    determining that operation of the BSS/IBSS requires use of a long slot time, wherein the long slot time is longer than the short slot time; and

    altering operation of at least one of the plurality of STAs to be consistent with the long slot time by;

    using the long slot time;

    setting a local Long Slot Termination Time (LSTT);

    when a Target Beacon Transition Time (TBTT) is before the local LSTT, transmitting a beacon that indicates that the long slot time is to be used and that includes the local LSTT; and

    when the TBTT is after the local LSTT, transmitting a beacon that indicates that the short slot time is to be used.

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