Patent ID: 9432921
Filing Date: 2016-08-30
CPC Classification: H04W

Claim Text:
1. A method for active scanning of a station (STA), the method comprising: transmitting, by the STA, to an access point (AP), a probe request frame including channel monitoring type information in a scanning channel; determining, by the STA, whether the scanning channel is in a busy state until a MinimumChannelTime; determining, by the STA, whether a physical layer convergence procedure protocol data unit (PPDU) including a valid physical layer convergence procedure (PLCP) header is received in the scanning channel until the MinimumChannelTime; and determining a time for monitoring a probe response frame transmitted by the AP in the scanning channel based on whether the PPDU is received until the MinimumChannelTime and the channel monitoring type information, when the scanning channel is in the busy state, wherein the channel monitoring type information includes information related to a type of the STA to monitor the probe response frame in the scanning channel, wherein the time for monitoring the probe response frame is determined as the MinimumChannelTime when the PPDU is not received in the scanning channel until the MinimumChannelTime and the channel monitoring type information indicates a first type, and wherein the time for monitoring the probe response frame is determined as a MaxChannelTime when the PPDU is not received in the scanning channel until the MinimumChannelTime and the channel monitoring type information indicates a second type.