Patent ID: 9609580
Date: 2017-03-28
CPC Classifications: H04W

Claim:
1. A method for obtaining backhaul link state information by a station (STA), the method comprising: multicasting, to a plurality of access points (APs), a generic advertisement service (GAS) request frame to request backhaul link state information of the plurality of APs; and receiving, from a representative AP among the plurality of APs, a GAS response frame including the backhaul link state information in response to the GAS request frame, wherein the GAS request frame is a frame that is transmitted before the STA performs an authentication procedure or an association procedure after a scanning procedure for the representative AP to request information related to availability of a network which the STA is to access, wherein the representative AP is determined as an AP that has a best backhaul link state among the plurality of APs, and wherein the plurality of APs exchange backhaul link state information of each AP through interfaces between the plurality of APs.