A method for reporting load information in a wireless local area network system, and a device therefore are discussed. The method according to one embodiment includes transmitting basic service set (BSS) load information, the BSS load information including a multi user (MU) multiple input multiple output (MIMO) capable station count field, a first utilization field and a second utilization field. In addition, the MU-MIMO capable station count field indicates a total number of stations with MU reception capability currently associated with a BSS managed by the AP. Additionally, the first utilization field includes information about an interval during which a 40 MHz channel width is busy. Lastly, the second utilization field include information about an interval during which a 80 MHz channel width is busy.