Sending feedback in a high efficiency service field

A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors, the instructions to configure the one or more processors to cause an apparatus of a first wireless device to:

• decode a trigger frame from a second wireless device, wherein the trigger frame indicates a resource allocation for an uplink (UL) multi-user (MU) transmission for the first wireless device;
• determine feedback for the second wireless device based on the resource allocation;
• encode a physical layer convergence protocol (PLCP) protocol data unit (PPDU) to include a high-efficiency (HE) service field comprising the feedback in a physical (PHY) portion of the PPDU;
• and
• configure the first wireless device to transmit the PPDU in accordance with the resource allocation to the second wireless device.

A method performed by an apparatus, the method comprising:

• decoding a trigger frame from a second wireless device, wherein the trigger frame indicates a resource allocation for an uplink (UL) multi-user (MU) transmission for the first wireless device;
• determining feedback for the second wireless device based on the resource allocation;
• encoding a physical layer convergence protocol (PLCP) protocol data unit (PPDU) to include a high-efficiency (HE) service field comprising the feedback in a physical (PHY) portion of the PPDU;
• and
• configuring the first wireless device to transmit the PPDU in accordance with the resource allocation to the second wireless device.

An apparatus of a first wireless device, the apparatus comprising memory;

• and processing circuitry coupled to the memory, the processing circuitry configured to:
• encode a first trigger frame, the trigger frame comprising a first resource allocation for an uplink (UL) multi-user (MU) transmission for a plurality of second wireless devices;
• configure the first wireless device to transmit the trigger frame to the plurality of second wireless devices;
• decode a plurality of physical layer convergence protocol (PLCP) protocol data unit (PPDUs) from the plurality of second wireless device, the PPDUs each comprising a high-efficiency (HE) service field comprising a feedback in a physical (PHY) portion of the frame;
• and
• determine a second resource allocation for a second UL MU transmission based on the feedback in each of the PPDUs.