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Collaborative navigation techniques for mobile devices

  • US 9,494,432 B2
  • Filed: 08/08/2012
  • Issued: 11/15/2016
  • Est. Priority Date: 06/19/2012
  • Status: Active Grant
First Claim
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1. A method for performing collaborative navigation, at a first mobile device, between said first mobile device and a second mobile device, the method comprising:

  • receiving a signal, from said second mobile device, at said first mobile device;

    determining, based on a measurement characteristic of said signal received at said first mobile device, that a second mobile device is located less than at a threshold distance from said first mobile device;

    obtaining, at a communication interface, navigation parameter indicative of an initial position of said second mobile device or a movement of said second mobile device, said initial position of said second mobile device or a movement of said second mobile device being determined based, at least in part, on a measurement from a sensor at said second mobile device; and

    determining an estimated position of said first mobile device, using said navigation parameter, one or more navigation constraints identified in an electronic map corresponding to an indoor environment, and said threshold distance between said second mobile device and said first mobile device, to limit said estimated position, movement determination, or both of said first mobile device within said indoor environment.

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