×

Estimating the location of a wireless terminal despite apparently reasonable but misleading or erroneous empirical data

  • US 8,630,665 B1
  • Filed: 06/25/2012
  • Issued: 01/14/2014
  • Est. Priority Date: 06/25/2012
  • Status: Active Grant
First Claim
Patent Images

1. A method of estimating the location of a wireless terminal, the method comprising:

  • receiving, at a location engine, a first signal value whose value is evidence of the location of the wireless terminal at time t(1);

    receiving, at the location engine, a second signal value whose value is evidence of the location of the wireless terminal at time t(1);

    receiving, at the location engine, a third signal value whose value is evidence of the location of the wireless terminal at time t(2);

    generating, at the location engine, a first hypothesis for the location for the wireless terminal at time t(1) based on the first signal value having first weight and the second signal value having second weight, wherein the first weight is greater than the second weight;

    generating, at the location engine, a second hypothesis for the location for the wireless terminal at time t(1) based on the first signal value having third weight and the second signal value having fourth weight, wherein the third weight is less than the fourth weight;

    generating, at the location engine, a first hypothesis for the location for the wireless terminal at time t(2) based on the third signal value; and

    generating, at the location engine, an estimate for the location of the wireless terminal at time t(2) based on;

    (i) the first hypothesis for the location for the wireless terminal at time t(1),(ii) the second hypothesis for the location for the wireless terminal at time t(1), and(iii) the first hypothesis for the location for the wireless terminal at time t(2); and

    transmitting, from the location engine, the estimate for the location of the wireless terminal at time t(2) for use by a location-based application;

    wherein the first weight, the second weight, the third weight, and the fourth weight are all real non-negative numbers.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×