Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Transmitter identifier database for enhanced GPS performance










Image Number 6 for United States Patent #8131464.

A mobile station database of cellular identifications and associated position information is stored in mobile station memory. The mobile station uses the position information in the database to assist in determining a current position for the mobile based on an identifier, such as cell ID, base station BSIC, PSC, or carrier frequency. A satellite vehicle signal is searched in an uncertainty region that is a function of position information associated with the current identifier. The uncertainty region can be limited by assumed platform dynamics via predefined velocity and acceleration information. Time maintenance for the mobile station can also be achieved through known approximate position from the position database and measurement of a single satellite vehicle propagation delay. The mobile station can compare a position determination obtained through satellite vehicle signals with position database information to determine the validity of that position. Out-of-network position information is also stored in the position database and is optionally shared with a network.








 
 
  Recently Added Patents
Semiconductor device manufacture in which minimum wiring pitch of connecting portion wiring layer is less than minimum wiring pitch of any other wiring layer
Display system with mounting assemblies and associated methods
Reusing data in user run book automation
Method of measuring a displacement amount for an automobile suspension assembly
Organic light-emitting display with black matrix
Depth estimation apparatus and method
Method and system for processing dictated information
  Randomly Featured Patents
Optimal spreader system, device and method for fluid cooled micro-scaled heat exchange
Compounds and methods for use thereof in the treatment of cancer or viral infections
Programmable antigen presenting cell of CD34 lineage
Image processing apparatus
Data-driven processor having multiple-precision data processing function and data processing method thereof
Pocketed bedding or seating product having pockets of differing heights
Apparatus and methods for power network coupling
Ski brake
Binary transformation method
Repeat instruction with interrupt