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Method and apparatus for accessing channel in WLAN system

  • US 9,801,208 B2
  • Filed: 08/05/2016
  • Issued: 10/24/2017
  • Est. Priority Date: 04/28/2012
  • Status: Active Grant
First Claim
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1. A method for performing channel access by a station (STA) in a wireless communication system, comprising:

  • receiving a first frame containing a traffic indication map (TIM) element and a restricted access window (RAW) parameter set (RPS) element, the RPS element including a RAW assignment field indicating a restricted access window (RAW) at which the STA is allowed to perform the channel access;

    receiving, at a beginning of the RAW indicated by the first frame, a second frame that assigns one or more RAW slots within the RAW; and

    performing channel access based on a RAW slot for the STA among the one or more RAW slots of the RAW,wherein the RAW assignment field contains first information indicating whether a transmission across a RAW slot boundary is allowed to the STA and second information indicating whether channel access within the RAW is allowed to a paged STA only.

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