Methods and devices for sub-channelized transmission schemes in WLANS

A station (STA) comprising:

• a processor;
• and
• a transceiver,
• the processor and the transceiver are configured to:
• receive, from an access point (AP), a trigger frame that solicits a Uplink Orthogonal Frequency-Divisional Multiple Access (UL OFDMA) transmission from the STA, wherein the trigger frame indicates a plurality of sub-bands and a plurality of power thresholds associated with the plurality of sub-bands, wherein the plurality of sub-bands are available for overlapping basic service set (OBSS) spatial reuse (OBSS SR) by one or more OBSS STAs;
• and
• in response to the trigger frame, transmit a physical (PHY) layer preamble that includes a signal field indicating the plurality of sub-bands and associated power thresholds indicated by the trigger frame, that are available for OBSS SR by the one or more OBSS STAs.

An access point (AP) comprising:

• a processor;
• and
• a transceiver,
• the processor and the transceiver are configured to:
• transmit, to a station (STA), a trigger frame that solicits a Uplink Orthogonal Frequency-Divisional Multiple Access (UL OFDMA) transmission from the STA, wherein the trigger frame indicates a plurality of sub-bands and a plurality of power thresholds associated with the plurality of sub-bands, wherein the plurality of sub-bands are available for overlapping basic service set (OBSS) spatial reuse (OBSS SR) by one or more OBSS STAs;
• and
• receiving, from the STA, a physical (PHY) layer preamble that includes a signal field indicating the plurality of sub-bands and associated power thresholds indicated by the trigger frame, that are available for spatial reuse by the one or more OBSS STAs.