Method and apparatus for scanning in wireless LAN
AssigneeLG Electronics Inc.
InventorsGiwon Park, Kiseon Ryu, Jinsam Kwak
Life of this patent
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Abstract
Disclosed are a method and an apparatus for scanning in a wireless Local Area Network (LAN). A method for scanning by a station (STA) comprises the steps of: the STA generating a Medium Access Control (MAC) layer management entity (MLME)-SCAN.request primitive comprising information for a basic service set identifier (BSSID) and a service set identifier (SSID); the STA generating a probe request frame comprising wildcard BSSID and SSID; the STA multi-casting the probe request frame to a first Access Point (AP) forming an extended service set (ESS) network using a particular SSID; and the STA receiving a probe response frame broadcast from the first AP as a response to the probe request frame.
Claims10
A method for performing, by a first station (STA), a scanning procedure, the method comprising:
- broadcasting, by the first STA, a scanning notice frame to a second STA before a probe request frame is transmitted, wherein the probe request frame is generated based on a wildcard basic service set identifier (BSSID) and a service set identifier (SSID) which are included in a Medium Access Control (MAC) layer management entity (MLME)-SCAN.request primitive;
- multicasting, by the first STA, the probe request frame to an access point (AP) included in an extended service set (ESS) network specified by the SSID;
- and
- receiving, by the first STA, a probe response frame broadcasted by the AP in response to the probe request frame, wherein the second STA receives the probe response frame without transmitting the probe request frame to the AP according to the scanning notice frame.
A first station (STA) operated in a wireless LAN, the first STA comprising:
- a radio frequency (RF) unit configured to receive a radio signal;
- and
- a processor operatively connected to the RF unit and configured to:
- broadcast a scanning notice frame to a second STA before a probe request frame is transmitted, wherein the probe request frame is generated based on a wildcard basic service set identifier (BSSID) and a service set identifier (SSID) which are included in a Medium Access Control (MAC) layer management entity (MLME)-SCAN.request primitive;
- multicast the probe request frame to an access point (AP) included in an extended service set (ESS) network specified by the SSID;
- and
- receive a probe response frame broadcasted by the AP in response to the probe request frame, wherein the second STA receives the probe response frame without transmitting the probe request frame to the AP according to the scanning notice frame.
Dependencies are inferred from the claim text.