Method and system for extending the usability period of long term orbit (LTO)
First Claim
1. A method for wireless communication, the method comprising:
- receiving, from a server configured to provide assistance data, satellite tracking data at a remote receiver, wherein the satellite tracking data comprises one or more ephemeris models;
receiving, directly from a satellite, a satellite broadcast signal at said remote receiver; and
adjusting a model of said satellite tracking data based on said received satellite broadcast signal to extend the usability period of said model.
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Accused Products
Abstract
Aspects of a method and system for extending the usability period of long term orbit (LTO) are provided. A GPS enabled handset may receive LTO data from an AGPS server via a wireless communication network such as 3GPP or WiMAX. The GPS enabled handset may be enabled to receive broadcast GPS signals. The GPS enabled handset may extract navigation information from the received broadcast GPS signals to be used to adjust the received LTO data. The usability period of the received LTO data may be extended, accordingly. A clock model and a satellite health model associated with the extracted navigation information may be used to update or replace the clock model and/or the satellite health model of the received LTO data, respectively. A navigation solution for the GPS enabled handset may be determined more accurately based on the adjusted LTO data.
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Citations
20 Claims
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1. A method for wireless communication, the method comprising:
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receiving, from a server configured to provide assistance data, satellite tracking data at a remote receiver, wherein the satellite tracking data comprises one or more ephemeris models; receiving, directly from a satellite, a satellite broadcast signal at said remote receiver; and adjusting a model of said satellite tracking data based on said received satellite broadcast signal to extend the usability period of said model. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for wireless communication, the system comprising:
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one or more processors operable to receive from a server configured to provide assistance data, satellite tracking data, wherein the satellite tracking data comprises one or more ephemeris models; said one or more processors are operable to receive, directly from a satellite a satellite broadcast signal; and said one or more processors are operable to adjust a model of said satellite tracking data based on said received satellite broadcast signal to extend a usability period of said model. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification