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
Optical cable plug-in detection
Feedback method and processing system for policy installation failures
Noise spectrum tracking in noisy acoustical signals
Radio link monitoring (RLM) and reference signal received power (RSRP) measurement for heterogeneous networks
Method to trace video content processed by a decoder
Extensible, filtered lists for mobile device user interface
Synchronization scheduling apparatus and method in real-time multi-core system
  Randomly Featured Patents
Toner cartridges for an image forming device
Programmable multi-chip module
Cover with adhesive bridges in scored areas
Apparatus, and associated method, for protecting a magnetoresistive sensor from damage during a thermal asperity event
Apparatus and methodology for enhancing efficiency of a power distribution system having power factor correction capability by using a self-calibrating controller
Tissue removal device for neurosurgical and spinal surgery applications
Guitar
Protective spectacles
Controlled mounting for luminaire on tiltable drafting board
Carrier tape