US 12,748,202 B2 · Techniques for improving ranging between electronic devices

Abstract

A mobile device may receive a plurality of timestamps, wherein the plurality of timestamps indicate sending and receiving time for ranging packets and response packets. The mobile device may calculate a responder turn-around time as a first difference between the second time and the first time. The mobile device may calculate a responding round trip time as a second difference between the second time and the third time. The mobile device may receive from the electronic device an initiator turn-around time and an initiator round trip time. The mobile device may calculate a frequency offset for the wireless protocol using the responder turn-around time, the responding round trip time, the initiator turn-around time, and the initiator round trip time. The mobile device may compare an observed frequency offset to the calculated frequency offset to determine a frequency offset difference and whether it exceeds a threshold, adjusting a ranging measurement.

Claims20

Dependent claims

A method of ranging with an electronic device by a mobile device, the method performed by the mobile device comprising:

receiving a first set of ranging packets at a first antenna array in a first location on the mobile device;
calculating a first ranging value based at least in part on the first set of ranging packets;
receiving a second set of ranging packets at a second antenna array in a second location on the mobile device, where the second location is different from the first location;
calculating a second ranging value based at least in part on the second set of ranging packets;
comparing the first ranging value and the second ranging value to determine a difference;
comparing the difference to a first threshold;
and
when the difference is above the first threshold, adjusting at least one of the first ranging value and the second ranging value.

5 more elements

One or more non-transitory computer-readable storage media comprising computer-executable instructions that, when executed by one or more processors, cause the one or more processors of a mobile device to perform operations to perform ranging via a wireless protocol with an electronic device, the operations comprising:

receiving a first set of ranging packets at a first antenna array in a first location on the mobile device;
calculating a first ranging value based at least in part on the first set of ranging packets;
receiving a second set of ranging packets at a second antenna array in a second location on the mobile device, where the second location is different from the first location;
calculating a second ranging value based at least in part on the second set of ranging packets;
comparing the first ranging value and the second ranging value to determine a difference;
comparing the difference to a first threshold;
and
when the difference is above the first threshold, adjusting at least one of the first ranging value and the second ranging value.

5 more elements

Dependencies are inferred from the claim text.

Techniques for improving ranging between electronic devices

Life of this patent

Techniques for improving ranging between electronic devices

Life of this patent

Abstract

Claims20