Drift correction in a wireless network

A device to synchronize a clock in a wireless network, comprising:

• means for identifying a clock temperature,
• means for identifying a drift associated with the identified temperature,
• means for applying a correction to the clock based on the identified drift,
• wherein, for the identified clock temperature, the means for identifying a drift is configured to compare a confidence of a drift value in a pre-calibration curve generated from fixed drift values in a pre-calibration table with a confidence of a drift value in a learning curve generated from variable drift values in a learning table and select the drift value from the curve having the higher confidence.

A wireless device comprising:

• a clock;
• a temperature sensor, to measure the device's temperature;
• a drift values module, comprising a pre-calibration table and a learning table,
• the pre-calibration table having temperature values associated with fixed drift values and respective pre-calibration confidence values, and
• the learning table having temperatures values associated with variable drift values, based on a learning algorithm, and respective variable confidence values,
• a drift correction module, configured to receive a temperature measurement from the temperature sensor and, in response to the received measurement, generate a pre-calibration curve and a learning curve and compare the confidence of the drift value in the pre-calibration curve with the confidence of the drift value in the learning curve and apply to the clock the drift value from the curve having the higher confidence.