Technology Detail


The Office of Technology Licensing was established in 1970 to transfer technologies developed at Stanford. Find out more about OTL's history, mission, staff, and statistics.

Login to TechFinder » 

WiFi SLAM - Indoor Localization for Mobile Devices


Stanford Reference:

10-365


Abstract


A team of Stanford computer scientists have developed software that can serve as a key enabling technology for location-aware services indoors. Location-aware services are an important emerging technology for mobile devices. Determining location outdoors is easy with existing technologies like GPS. Indoor localization is more difficult.

The WiFi SLAM (simultaneous localization and mapping) algorithm efficiently solves the indoor localization problem by using already-existing WiFi beacons to localize a mobile device. While competing methods for WiFi localization exist, this technology offers significant improvements. Specifically, it provides easy, low-cost map creation -- a single user can create a map just by walking around arbitrarily. It also provides highly reliable localization. Ultimately, indoor localization using WiFi SLAM can be used to provide safety, indoor navigation, enhanced customer experience, and efficient meet-up solutions.

Stage of Research
The developers have tested the algorithm in a number of applications, showing it produces excellent results in practice.

Applications


  • Indoor localization and mapping for smart phones or robotic devices

Advantages


  • Efficient and low cost:
    • uses existing WiFi beacons
    • software only solution that utilizes only signal-strength measurements, without hardware or network infrastructure
  • Easy to use - no initial set up/configuration of devices
  • Simple map creation - a single user can create a map just by walking around arbitrarily
  • Reliable, self-correcting localization
  • Broad range of environments - no signature uniqueness assumptions

Related Web Links



Innovators & Portfolio



Date Released

 7/21/2011
 

Licensing Contact


Imelda Oropeza, Copyright Licensing & Marketing Specialist
imelda.oropeza@stanford.edu
650-725-9039 (Business)

[-] Map/Timeline

91-126 Deformable Grating Modulator
93-010 Use of Feedback for Crosstalk Suppression in Co-channel Wireless Transmission
93-192 Total Access System

more technologies »


   

  

Also of Interest...
91-126 Deformable Grating Modulator
93-010 Use of Feedback for Crosstalk Suppression in Co-channel Wireless Transmission
93-192 Total Access System

Recently Viewed...
S10-365 WiFi SLAM - Indoor Localization for Mobile Devices