Transmission of BSS load element in wireless local area network system

摘要

A method for providing basic service set (BSS) utilization information in a wireless local area network system, performed by an access point, includes a corresponding STA count field, a plurality of frequency and/or spatial stream underutilization fields, and Generating and transmitting a BSS load element that includes a plurality of delta observable secondary channel utilization fields. The Corresponding STA Count field indicates the total number of STAs currently associated with the BSS. Each of the frequency and/or spatial stream underutilization field indicates an unused frequency and/or spatial stream domain resource on the orthogonal frequency division multiple access resource unit of each channel, and the frequency and/or spatial stream underutilization field , Each of which is calculated based on the RU size. Each of the delta observable secondary channel utilization fields indicates the utilization of subbands in the secondary channel calculated based on the observable utilization on the corresponding secondary channel.