Patent ID: 9210652
Filing Date: 2015-12-08
Classification: H04W

Abstract:
1. A method for actively scanning a Wi-Fi network, the method comprising: sending, by a station (STA), a probe request message over a first channel in a multi-channel wireless local area network (WLAN); monitoring, by the STA, the first channel for probe response messages; setting, by the STA, a probe timer; detecting, by the STA, at least some channel activity prior to the probe timer reaching a minimum channel time (MinChannelTime); discontinue monitoring, by the STA, of the first channel when the probe timer reaches a medium channel time (MedChannelTime) unless a message indicating the presence of a Wi-Fi access point (AP) is detected on the first channel after sending the probe request message and prior to the probe timer reaching the MedChannelTime; and monitoring, by the STA, the first channel until the probe timer reaches a maximum channel time (MaxChannelTime) when at least one message indicating the presence of a Wi-Fi AP is detected on the first channel after sending the probe request message and prior to the probe timer reaching the MedChannelTime, wherein the MedChannelTime is in-between the MinChannelTime and the MaxChannelTime.