An high efficiency wireless local area network access point including a channel access module and a scheduling module. The channel access module accesses a channel of an unlicensed frequency band, which includes a plurality of subchannels. The scheduling module generates a schedule for a plurality of high efficiency wireless local area network client stations to transmit data to the access point via the channel of the unlicensed frequency band. The schedule includes information for the plurality of client stations regarding (i) a time slot in which to access the channel without contention to transmit data to the access point via the channel, (ii) a subchannel of the plurality of subchannels to use during the time slot to transmit data to the access point, and (iii) one or more spatial streams to use on the subchannel and during the time slot to transmit data to the access point.