Wake-up packet acknowledgement procedure

An apparatus of a first wireless device, the apparatus comprising:

• memory;
• and processing circuitry, the processing circuitry to:
• decode a wake-up packet, the wake-up packet being received at a LP-WUR (low-power wake-up radio) and from a second wireless device;
• turn on a first component of a WLAN (wireless local area network) radio of the first wireless device in response to the wake-up packet;
• encode an acknowledgement frame for transmission to the second wireless device using the first component of the WLAN radio, the acknowledgement frame being responsive to the wake-up packet;
• turn on one or more additional components of the WLAN (wireless local area network) radio in response to the wake-up packet;
• decode a data packet, the data packet being received using the WLAN radio.

A non-transitory machine-readable medium storing instructions for execution by processing circuitry of a first wireless device, the instructions causing the processing circuitry to:

• encode for transmission of a wake-up packet of a LP-WUR (low-power wake-up radio) to a second wireless device, the wake-up packet to wake up a WLAN (wireless local area network) radio of the second wireless device;
• upon decoding a response frame received from the second wireless device during a predefined time period, the predefined time period occurring after the transmission of the wake-up packet and when the WLAN radio of the second wireless device is predicted to be turned on, the response frame indicating that the WLAN radio of the second wireless device is turned on:
• encode for transmission of a data packet to the WLAN radio of the second wireless device;
• and
• upon failing to receive the response frame from the second wireless device during the predefined time period:
• encode for retransmission of the wake-up packet to the second wireless device.

A method, implemented at a first wireless device, the method comprising:

• encoding for transmission of a wake-up packet of a LP-WUR (low-power wake-up radio) to a second wireless device, the wake-up packet to wake up a WLAN (wireless local area network) radio of the second wireless device;
• upon decoding a response frame received from the second wireless device during a predefined time period, the predefined time period occurring after the transmission of the wake-up packet when the WLAN radio of the second wireless device is predicted to be turned on, the response frame indicating that the WLAN radio of the second wireless device is turned on:
• encoding for transmission of a data packet to the WLAN radio of the second wireless device;
• and
• upon failing to receive the response frame from the second wireless device during the predefined time period:
• encoding for retransmission of the wake-up packet to the second wireless device.