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Method and Apparatus for Indoor Location Estimation Among Peer-To-Peer Devices

  • US 20160337809A1
  • Filed: 02/16/2016
  • Published: 11/17/2016
  • Est. Priority Date: 05/15/2015
  • Status: Active Grant
First Claim
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1. A method performed by a first peer-to-peer device, the method comprising:

  • taking a first set of received signal strength measurements for a first set of signals received from at least one device within a group of devices that includes the first peer-to-peer device and a remaining number of peer-to-peer devices;

    recording a first set of time stamps that indicate when the first set of received signal strength measurements were taken;

    sending the first set of received signal strength measurements and corresponding first set of time stamps for propagating to the remaining peer-to-peer devices;

    receiving a second set of received signal strength measurements taken by the remaining peer-to-peer devices and a second set of time stamps that indicate when the second set of received signal strength measurements were taken;

    determining unknown positioning coordinates for at least one peer-to-peer device in the group of devices using at least the first and second sets of received signal strength measurements and the first and second sets of time stamps, wherein the determining comprises correlating the measurements in the first and second sets of received signal strength measurements using the first and second sets of time stamps to define constraints on distances between pairs of devices in the group of devices.

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