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AssigneeQUALCOMM Incorporated
InventorsJie WU, Daniel Fred FILIPOVIC, Emilija Milorad SIMIC, Vishal Agarwal
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System and method for temperature-calibration of a crystal oscillator (XO) in a mobile device. A temperature-calibration status of the XO is determined and a trigger condition related to temperature-calibration of the XO is detected. If the temperature-calibration status of the XO is not fully temperature-calibrated or if the XO has not been previously temperature-calibrated, a temperature-calibration session is initiated by an XO manager based on the condition, wherein a receiver is configured to receive signals and temperature-calibration of the XO is performed in a background mode based on the received signals. The condition based triggering ensures that the XO is temperature-calibrated prior to launch of any position based or global navigation satellite systems (GNSS) based applications on the mobile device. The trigger condition can include first use or power-on, charging, presence in an outdoor environment, variation in operating temperature, pre-specified time, and/or user input pertaining to the mobile device.
A method of temperature-calibrating a crystal oscillator (XO) in a mobile device, the method comprising:
A mobile device comprising:
A wireless communication system comprising:
A non-transitory computer-readable storage medium comprising code, which, when executed by a processor, causes the processor to perform operations for temperature-calibrating of a crystal oscillator (XO) in a mobile device, the non-transitory computer-readable storage medium comprising:
Dependencies are inferred from the claim text.