ADAPTIVE OPTIMIZATION OF TIME OF FLIGHT (ToF) EXCHANGE
AssigneeIntel Corporation
InventorsAdrian P. Stephens, Yuval Amizur, Leor Banin
Life of this patent
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Abstract
Embodiments for providing adaptive optimization of time of flight (ToF) exchange are generally described herein. In some embodiments, a mobile station includes a range management module arranged to transmit a measurement request action frame having a first flag for indicating to an access point to perform an optimized sequence for calculating the ToF, to receive ranging information in response to the transmission of the measurement request action frame having the first flag, and to calculate a time of flight based on the received ranging information.
Claims17
(canceled)
A first device including a memory and one or more processors, the one or more processors including circuitry, the circuitry having logic to:
- process an initial timing measurement frame, received from a second device, that includes a capability field indicating that the second device is capable of capturing and sending timestamps associated with an initial timing measurement frame;
- process a subsequent timing measurement frame that is subsequent to the initial timing measurement frame and that includes a first timestamp t1 and a second timestamp t4 associated with the initial timing measurement frame;
- and
- calculate, based on at least the first timestamp and the second timestamp a timing value that is a measurement of a relative location between the first device and the second device.
A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a user station (STA) to perform operations comprising:
- generating a timing measurement request frame to initiate a timing measurement procedure at a second device;
- processing an initial timing measurement frame, received from another device responsive to the timing measurement request frame, that includes a capability field indicating that the other device is capable of capturing and sending timestamps associated with the initial timing measurement frame;
- processing a subsequent timing measurement frame that is subsequent to the initial timing measurement frame and that includes a first timestamp t1 and a second timestamp t4 that is associated with the initial timing measurement frame;
- and
- calculating a time of flight between the STA and the other device based on at least the timestamps associated with the initial timing measurement frame.
A user station (STA), comprising:
- a wireless communication device including a radio, a processor, and a memory, the wireless communication device to:
- process an initial timing measurement frame, received from a second device, that includes a capability field indicating that the second device is capable of capturing timestamps associated with the initial timing measurement frame;
- process a subsequent timing measurement frame that is subsequent to the initial timing measurement frame and that includes a timestamp t1 representative of a time at which the initial timing measurement frame was transmitted by the second device;
- and
- calculate a time of flight between the STA and the second device, based on at least the timestamp t1 and on the time t2 at which the initial timing measurement frame was received at the STA.
A device including a memory and one or more processors, the one or more processors including circuitry, the circuitry having logic to:
- receive a timing measurement request frame from a requesting user station (STA) to initiate a timing measurement procedure at the device;
- and
- provide, responsive to the timing measurement request frame, an initial timing measurement frame that includes an indication of the device is capable of capturing and transmitting timestamps associated with the initial timing measurement frame.
Dependencies are inferred from the claim text.