Method and apparatus for reducing time to first fix (ttff) of gnss receiver without accurate time information
AssigneeMediatek Inc.
InventorChien-Liang Tsai
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Abstract
A method for reducing Time To First Fix (TTFF) of a Global Navigation Satellite System (GNSS) receiver includes storing ephemeris information into a non-volatile memory, and utilizing the ephemeris information to determine a GNSS time, in order to reduce the TTFF. An apparatus for reducing TTFF of a GNSS receiver includes a storage module and a processing module coupled to the storage module. The storage module is utilized for storing data, wherein the stored data in the storage module is non-volatile. The processing module stores ephemeris information into the storage module and utilizes the ephemeris information to determine a GNSS time, in order to reduce the TTFF.
Claims17
A method for reducing Time To First Fix (TTFF) of a Global Navigation Satellite System (GNSS) receiver, comprising:
- storing ephemeris information into a non-volatile memory before powering down the GNSS receiver;
- and
- utilizing the ephemeris information to determine a GNSS time, in order to reduce the TTFF when resuming the GNSS receiver.
An apparatus for reducing Time To First Fix (TTFF) of a Global Navigation Satellite System (GNSS) receiver, comprising:
- a storage module for storing data, wherein the stored data in the storage module is non-volatile;
- a processing module, coupled to the storage module, for storing ephemeris information into the storage module before powering down the GNSS receiver, and utilizing the ephemeris information to determine a GNSS time, in order to reduce the TTFF when resuming the GNSS receiver.
Dependencies are inferred from the claim text.