Patent ID: 11949628
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. A method of operating a first wireless device, the method comprising:
determining a received signal strength indicator (RSSI) value associated with a wireless channel between the first wireless device and a second wireless device, wherein the wireless channel is in a millimeter wave (mmWave) frequency range;
determining a phase value associated with the wireless channel;
determining a state of motion of the first wireless device using the RSSI value and the phase value; and
sending data to the second wireless device using a first subcarrier structure of an Orthogonal Frequency Division Multiplexing (OFDM) physical layer, in response to the state of motion being a first state of motion; or
sending the data to the second wireless device using a second subcarrier structure of the OFDM physical layer, in response to the state of motion being a second state of motion, wherein movement of the first wireless device is greater in the second state of motion than the first state of motion.