Resources Contact Us Home
Estimation of speed of travel using the dynamic signal strength variation of multiple WLAN access points

Image Number 5 for United States Patent #8014788.

A method for estimating the speed and bearing of a Wi-Fi enabled device using WLAN radio signals in a WLAN based location service is provided. A method used to estimate a speed of travel of a Wi-Fi enabled device comprises the Wi-Fi enabled device receiving signals transmitted by Wi-Fi access points in range of the Wi-Fi enabled device, and using the signals to estimate the speed of and/or direction of travel of the Wi-Fi enabled device.

  Recently Added Patents
Polyamide compositions
Optical packet signal transmission device and WDM optical communication network
Headset systems and methods
Method and apparatus for closed-loop control of anti-tachyarrhythmia pacing using hemodynamic sensor
Techniques for accessing a parallel database system via external programs using vertical and/or horizontal partitioning
Memory management configuration
Use of emerging non-volatile memory elements with flash memory
  Randomly Featured Patents
Eight player video gambling machine
Male condom catheter having adhesive transfer on roller portion
Arrow rest assembly
Snowsuit for use in a stroller or the like
Air motor having ceramic valves
Fifth wheel vehicle trailer
Multilevel table routing
Controller for controlling an internal combustion engine in emergency driving
Low noise avalanche photodiode having an avalanche multiplication layer of InAlAs/InGaAlAs
Method of protecting pigments with transparent crystalline zircon