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
Device and method for controlling brightness of organic light emitting diode display
Materials and methods for stress reduction in semiconductor wafer passivation layers
Client-managed group communication sessions within a wireless communications system
Prevention and treatment of oxidative stress disorders by gluthathione and phase II detoxification enzymes
User interfaces
Configuration and incentive in event management environment providing an automated segmentation of consideration
Weak acid recovery system for ethanol separation processes
  Randomly Featured Patents
Managing recurring appointments
Dioxo-aromatic compounds as oxygen scavengers
Data storage apparatus and data writing/reading method
Glass container coated with polyurethane
Systems and methods for communicating with ambulatory medical devices such as drug delivery devices
Method for manufacturing semiconductor device, and method for processing etching-target film
Condensation curable silicone foul release coatings and articles coated therewith
Marine electrical plug
Trusted network binding using LDAP (lightweight directory access protocol)
Socket for electrical parts