US 12,704,645 B2 · Clock calibrator for network devices

Abstract

Devices, systems, methods, and processes for calibrating clock signals of network devices are described herein. A device can initiate a ranging procedure with a reference device for synchronizing a clock signal of the device. The ranging procedure may utilize Fine Time Measurement (FTM), Ultra-Wide band (UWB), or similar protocols. The device can also synchronize the clock signal based on detection of ambient interference events. The device may also receive Global Navigation Satellite System (GNSS) data from a satellite and determine a pseudo range for the corresponding satellite based on the synchronized clock signal. The device may further transmit the GNSS data to a location engine. The location engine may aggregate the GNSS data received from a plurality of devices and determine a geolocation of the plurality of devices based on the aggregated GNSS data.

Claims20

Dependent claims

A device, comprising:

a processor;
a memory communicatively coupled to the processor;
and
a calibration logic, configured to:
transmit a ranging request;
receive a first timestamp, a second timestamp, and a timer value indicative of a time for a next frame exchange from a first network device in response to the ranging request;
determine a clock offset based on a difference between the first timestamp and the second timestamp;
determine a clock drift based on the clock offset and the timer value;
and
calibrate a local clock signal in real-time based on the clock drift and the clock offset.

7 more elements

Dependencies are inferred from the claim text.

Clock calibrator for network devices

Life of this patent

Clock calibrator for network devices

Life of this patent

Abstract

Claims20