Patent ID: 9307484
Filing Date: 2016-04-05
CPC Classification: H04W

Claim Text:
1. A scanning method in a wireless local area network (WLAN) system, the method comprising: transmitting, by a station, a probe request frame, via a channel; and receiving, by the station, a probe response frame from a target access point (AP) to respond to the probe request frame based on information indicated by the probe request frame, wherein the information indicated by the probe request frame includes at least one of information regarding a max channel time and preference information regarding the target AP, wherein the information regarding the max channel time includes information indicating a time that the station is available after transmission of the probe request frame to receive the probe response frame as responses with respect to the probe request frame in the channel, wherein when the max channel time is lapsed, the probe response frame is not transmitted by the target AP, and wherein the preference information regarding the target AP indicates what the target AP needs to satisfy to transmit the probe response frame to the station.