Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2011-06-14
2011-06-14
Flynn, Nathan (Department: 2468)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S351000, C370S356000, C342S357220, C342S357240, C342S357390, C701S214000, C701S215000
Reexamination Certificate
active
07961717
ABSTRACT:
A method and system for precise position determination of general Internet Protocol (IP) network-connected devices. A method enables use of remote intelligence located at strategic network points to distribute relevant assistance data to IP devices with embedded receivers. Assistance is tailored to provide physical timing, frequency and real time signal status data using general broad band communication protocols. Relevant assistance data enables several complementary forms of signal processing gain critical to acquire and measure weakened or distorted in-building Global Navigation Satellite Services (GNSS) signals and to ultimately extract corresponding pseudo-range time components. A method to assemble sets of GNSS measurements that are observed over long periods of time while using standard satellite navigation methods, and once compiled, convert using standard methods each pseudo-range into usable path distances used to calculate a precise geographic position to a known degree of accuracy.
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Keegan Richard
Lee Richard M.
Flynn Nathan
iPosi, Inc.
Kassim Khaled
Marsh & Fischmann & Breyfogle LLP
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