Drift correction in a wireless network
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United States of America Patent
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Feb 2, 2021
Grant Date -
Aug 8, 2019
app pub date -
Jul 22, 2016
filing date -
Jul 22, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and devices for synchronizing a device clock in a wireless network (e.g. a LPWAN) are disclosed. Example methods comprise identifying a device temperature, identifying a clock drift associated with the identified device temperature and applying a correction to the device clock based on the identified drift. For the identified device temperature, the drift is identified by comparing the confidence of the drift value in a pre-calibration curve generated from fixed drift values in a pre-calibration table with the confidence of the drift value in a learning curve generated from variable drift values in a learning table and selecting the drift value from the curve having the higher drift confidence.
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