Invention Grant
- Patent Title: RFID tag assisted GPS receiver system
- Patent Title (中): RFID标签辅助GPS接收机系统
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Application No.: US12954490Application Date: 2010-11-24
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Publication No.: US08743699B1Publication Date: 2014-06-03
- Inventor: Keir Finlow-Bates , Joonas V. T. Viskari , Terry FK Ngo
- Applicant: Keir Finlow-Bates , Joonas V. T. Viskari , Terry FK Ngo
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Mahamedi Paradice Kreisman LLP
- Main IPC: H04L12/26
- IPC: H04L12/26

Abstract:
A system and method are disclosed for improving the speed of operation and accuracy of GPS receivers. The system comprises a RFID assisted GPS (RAGPS) receiver and geographically dispersed RFID assistance tags. The RAGPS receiver and the RFID assistance tags store location data comprising current location estimate, almanac, and ephemeris data. The location data is time stamped. The RFID assisted GPS (RAGPS) receiver comprises a GPS receiver, a RFID tag reader, a RFID transmitter and a controller. The controller comprises software that transfers the location data to and from the RAGPS receiver and a RFID assistance tag. The method discloses the RAGPS receivers reading up-to-date location data from a nearby RFID assistance tags and similarly if the RAGPS receivers have up-to-date location data already, the RAGPS receivers may write that location data to a nearby assistance tags that lacks up-to-date location data.
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