Channel sounding

An apparatus, comprising a processing resource to execute instructions to:

• detect a plurality of stations (STAs) in communication with an access point (AP);
• determine a number of active STAs among the plurality of STAs in communication with the AP;
• perform channel sounding between the AP and a respective active STA among the plurality of STAs at a first channel sounding interval;
• determine a coherence time associated with a channel between the AP and the respective active STA among the plurality of active STAs;
• adjust the first channel sounding interval to a second channel sounding interval based, at least in part, on the number of active STAs and the coherence time;
• and
• perform channel sounding between the AP and the respective active STA among the plurality of active STAs at the second channel sounding interval.

A method, comprising:

• determining a channel condition associated with a channel between an access point (AP) and a station (STA);
• performing channel sounding between the AP and the STA at a first channel sounding interval;
• determining that the channel condition has changed;
• adjusting the first channel sounding interval to a second channel sounding interval based on the determination that the channel condition has changed;
• and
• performing channel sounding between the AP and the STA at the second channel sounding interval.