Enhanced tone mapping for trigger-based null data packet feedback

A non-transitory computer-readable medium storing computer-executable instructions which when executed by one or more processors of a first device result in performing operations comprising:

• identifying a frame received from a second device;
• determining, based on the frame, a resource unit allocated to the first device, wherein the resource unit is associated with a 20 MHz sub-channel of a bandwidth;
• determining, based on the resource unit and the bandwidth, tones associated with a high-efficiency short training field (HE-STF) of a HE trigger-based (TB) null data packet (NDP) feedback physical layer protocol data unit (PPDU);
• and
• causing to send the HE TB NDP feedback PPDU to the second device in the 20 MHz sub-channel, wherein the HE TB NDP feedback PPDU comprises the tones.

A method comprising:

• identifying, by one or more processors of a first device, a frame received from a second device;
• determining, based on the frame, a resource unit allocated to the first device, wherein the resource unit is associated with a 20 MHz sub-channel of a bandwidth;
• determining, based on the resource unit and the bandwidth, tones associated with a high-efficiency short training field (HE-STF) of a HE trigger-based (TB) null data packet (NDP) feedback physical layer protocol data unit (PPDU);
• and
• causing to send the HE TB NDP feedback PPDU to the second device in the 20 MHz sub-channel, wherein the HE TB NDP feedback PPDU comprises the tones.