Determining a tone sequence for wake-up procedures

An apparatus for selection of a tone sequence, comprising:

• a memory;
• and
• a processing system configured to:
• identify a plurality of candidate tone sequences;
• store, in the memory and in association with an identifier for corresponding candidate tone sequences, a correlation metric and a peak-to-average-power ratio for each of the plurality of candidate tone sequences;
• associate the correlation metric and the peak-to-average-power ratio for each of the plurality of candidate tone sequences into a plurality of coordinate pairs, each pair representative of one of the plurality of candidate tone sequences;
• identify one or more of the plurality of coordinate pairs that define a lower convex hull of the plurality of coordinate pairs;
• and
• select the tone sequence for an ON symbol of a wake-up packet from the one or more coordinate pairs that define the lower convex hull.

A method for wireless communications at an apparatus of an access point (AP), comprising:

• determining that a station (STA) associated with the AP is to be awakened from a low power mode;
• generating a wake-up packet for reception by a wake-up radio of the STA to trigger wake-up of the STA, the wake-up packet including a tone sequence for an ON symbol of the wake-up packet, wherein the tone sequence is associated with a maximum correlation metric that is less than a maximum correlation metric threshold;
• and
• transmitting the wake-up packet to the STA.

A method for selection of a tone sequence, comprising:

• identifying a plurality of candidate tone sequences;
• storing, in memory and in association with an identifier for corresponding candidate tone sequences, a correlation metric and a peak-to-average-power ratio for each of the plurality of candidate tone sequences;
• associating the correlation metric and the peak-to-average-power ratio for each of the plurality of candidate tone sequences into a plurality of coordinate pairs, each pair representative of one of the plurality of candidate tone sequences;
• identifying one or more of the plurality of coordinate pairs that define a lower convex hull of the plurality of coordinate pairs;
• and
• selecting the tone sequence for an ON symbol of a wake-up packet from the one or more coordinate pairs that define the lower convex hull.