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Methods and systems for providing efficient operation of multiple modes in a WLAN system

  • US 8,909,286 B2
  • Filed: 11/20/2012
  • Issued: 12/09/2014
  • Est. Priority Date: 01/04/2006
  • Status: Active Grant
First Claim
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1. A method for use in an access point (AP), the method comprising:

  • receiving a request-to-send (RTS) frame from a station (STA), wherein the RTS frame indicates a request for a transmit opportunity (TXOP);

    transmitting, in response to the RTS frame, an indication of a TXOP, wherein the indication of a TXOP is a clear-to-send (CTS) frame;

    receiving packet data from the STA during the TXOP;

    receiving, on a condition that the STA does not have further packet data to transmit, an indication of truncation of the TXOP including a first space-time block code (STBC) contention free (CF)-End frame or a first non-STBC CF-End frame; and

    transmitting a second STBC CF-End frame and a second non-STBC CF-End frame.

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