Method of updating GPS almanac data for satellites not in view
First Claim
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1. A method of updating Global Positioning System almanac data comprising steps of:
- obtaining a current satellite almanac for a satellite constellation at a server in a communications infrastructure associated with a wireless device;
creating a subset of the current satellite almanac in the server that includes satellite almanac data for fewer than all satellites listed in the current satellite almanac and at least one satellite not in view of the wireless device; and
transmitting the subset of the current satellite almanac from the server to the wireless device.
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Abstract
A method of updating Global Positioning System almanac data includes steps for obtaining a current satellite almanac for a satellite constellation at a server in a communications infrastructure associated with a wireless device (102), creating a subset of the current satellite almanac in the server that includes satellite almanac data only for fewer than all satellites listed in the current satellite almanac (104), and transmitting the subset of the current satellite almanac from the server to the wireless device (106).
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Citations
18 Claims
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1. A method of updating Global Positioning System almanac data comprising steps of:
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obtaining a current satellite almanac for a satellite constellation at a server in a communications infrastructure associated with a wireless device;
creating a subset of the current satellite almanac in the server that includes satellite almanac data for fewer than all satellites listed in the current satellite almanac and at least one satellite not in view of the wireless device; and
transmitting the subset of the current satellite almanac from the server to the wireless device. - View Dependent Claims (2, 3, 4, 5)
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6. A method of updating Global Positioning System almanac data comprising steps of:
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determining an approximate position of a wireless device;
obtaining a current satellite almanac for a satellite constellation at a server in a communications infrastructure associated with the wireless device;
determining which satellites are not in view of the wireless device;
creating a subset of the current satellite almanac in the server that includes data only for one or more satellites not in view of the wireless device;
transmitting the subset of the current satellite almanac from the server to the wireless device;
receiving the subset of the current satellite almanac from the server at the wireless device; and
updating a satellite almanac stored in the wireless device with the subset of the current satellite almanac. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification