Partial bandwidth feedback for 480/640 mhz transmission in wi-fi

An wireless communications device, comprising:

• a processing system that includes processor circuitry and memory circuitry that stores code, the processing system configured to cause the wireless communications device to:
• transmit a null data packet announcement frame comprising a partial bandwidth information field, the partial bandwidth information field including a first set of bits indicating a frequency resolution and a second set of bits including a feedback bitmap, the feedback bitmap indicating one or more portions of a channel bandwidth over which to provide feedback in accordance with the frequency resolution, wherein a value of the first set of bits and a quantity of bits in the second set of bits are based at least in part on the channel bandwidth being one of 480 MHz or 640 MHz;
• transmit, in accordance with the null data packet announcement frame, a null data packet;
• and
• receive a feedback report based at least in part on the null data packet and the partial bandwidth information field.

A method for wireless communications by a wireless communications device, comprising:

• receiving a null data packet announcement frame comprising a partial bandwidth information field, the partial bandwidth information field including a first set of bits indicating a frequency resolution and a second set of bits including a feedback bitmap, the feedback bitmap indicating one or more portions of a channel bandwidth over which to provide feedback in accordance with the frequency resolution, wherein a value of the first set of bits and a quantity of bits in the second set of bits are based at least in part on the channel bandwidth being one of 480 MHz or 640 MHz;
• receiving, in accordance with the null data packet announcement frame, a null data packet;
• and
• transmitting a feedback report based at least in part on the null data packet and the partial bandwidth information field.

A method for wireless communications wireless communications device, comprising:

• transmitting a null data packet announcement frame comprising a partial bandwidth information field, the partial bandwidth information field including a first set of bits indicating a frequency resolution and a second set of bits including a feedback bitmap, the feedback bitmap indicating one or more portions of a channel bandwidth over which to provide feedback in accordance with the frequency resolution, wherein a value of the first set of bits and a quantity of bits in the second set of bits are based at least in part on the channel bandwidth being one of 480 MHz or 640 MHz;
• transmitting, in accordance with the null data packet announcement frame, a null data packet;
• and
• receiving a feedback report based at least in part on the null data packet and the partial bandwidth information field.