Method and apparatus for filtering-based scanning in WLAN system
The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for filtering-based scanning in a WLAN system. A method for a station (STA) setting up a high-speed link in the wireless communication system, according to one embodiment of the present invention, comprises the steps of: transmitting a first frame comprising filtering information to at least one access point (AP); and receiving a second frame from a portion or all of the at least one AP, wherein whether to transmit the second frame can be determined on the basis of the filtering information.
1. A method for performing, by a station (STA), fast link setup in a wireless communication system, comprising:
transmitting, to one or more access points (APs), a first frame including filtering information; and
receiving, from a portion or all of the APs, a second frame,
wherein whether the second frame is transmitted is determined based on the filtering information, and
wherein the filtering information includes a received signal strength limit value.
2. The method according to claim 1 , wherein the portion or all of the APs include an AP having a received signal strength of the first frame, the received signal strength exceeding the received signal strength limit value.
3. The method according to claim 1 , wherein the filtering information includes charging type information.
4. The method according to claim 3 , wherein the portion or all of the APs include an AP conforming to a charging policy matching the charging type information.
5. The method according to claim 1 , wherein an AP not satisfying conditions according to the filtering information defers transmission of the second frame.
6. The method according to claim 5 , wherein configuration information about a time for which transmission of the second frame is deferred is included in the first frame.
7. The method according to claim 1 , wherein the first frame is broadcast to the one or more APs.
8. The method according to claim 1 , wherein the first frame is a probe request frame and the second frame is a probe response frame.
9. A method for supporting, by an AP, fast link setup in a wireless communication system, comprising:
receiving a first frame including filtering information from an STA; and
transmitting a second frame to the STA,
wherein whether the second frame is transmitted is determined based on the filtering information, and
wherein the filtering information includes a received signal strength limit value.
10. An STA performing fast link setup in a wireless communication system, comprising:
a transceiver; and
a processor,
wherein the processor is configured to
transmit, to one or more APs, a first frame including filtering information using the transceiver, and
receive, from a portion or all of the APs, a second frame using the transceiver,
wherein whether the second frame is transmitted is determined based on the filtering information, and
wherein the filtering information includes a received signal strength limit value.
11. An AP supporting fast link setup in a wireless communication system, comprising:
a transceiver;
a processor,
wherein the processor is configured to
receive a first frame including filtering information from an STA using the transceiver, and
transmit a second frame to the STA using the transceiver,
wherein whether the second frame is transmitted is determined based on the filtering information, and
wherein the filtering information includes a received signal strength limit value.