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
System and method for obfuscation by common function and common function prototype
Mouth pipe unit for activating a device
Reflector for a lighting assembly
Imaging device and imaging method
Household electric appliance having a piezoelectric pump
Naphthylacetic acids
Method and apparatus for controlling diameter of a silicon crystal ingot in a growth process
  Randomly Featured Patents
Method and system for service restoration in optical fiber communication networks
Synchronous variable compression bag
System and method for monitoring power source longevity of an implantable medical device
Method and apparatus for analyzing image, and computer product
Process for the manufacture of budesonide
Fluid-operated supporting arrangement and a conduit breakage safety device
Flexible product made from a poly(phenylene sulfide) blend and method of making same
Multipurpose garment
Apparatus for chemical-mechanical polishing (CMP) head having direct pneumatic wafer polishing pressure
Hierarchical data storage manager, anonymous tip processing engine, and a vehicle information processing engine for security and safety applications