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METHOD AND APPARATUS FOR SCANNING IN WIRELESS LAN

  • US 20150230162A1
  • Filed: 09/11/2013
  • Published: 08/13/2015
  • Est. Priority Date: 09/11/2012
  • Status: Active Grant
First Claim
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1. A method for scanning by a station (STA), comprising:

  • unicasting, by the STA, a probe request frame to a target access point (AP) via a first channel, the target AP is determined based on a basic service identifier (BSSID) included in an MLME.SCAN.request.primitive;

    determining, by the STA, whether a first acknowledgement (ACK) for the probe request frame is received by processing an ACK transmitted via the first channel within a first ACK transmission time;

    monitoring, by the STA, a probe response frame as a response to the probe request frame on the first channel if the first ACK is received within the first ACK transmission time; and

    switching, by the STA, a scanning channel from the first channel to a second channel regardless of a clear channel assessment (CCA) level detected during the first ACK transmission time when a timer for the first ACK transmission time expires if the first ACK is not received within the first ACK transmission time.

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