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Collecting positioning reference data

  • US 9,955,309 B2
  • Filed: 01/23/2012
  • Issued: 04/24/2018
  • Est. Priority Date: 01/23/2012
  • Status: Expired due to Fees
First Claim
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1. A method performed by an apparatus, said method at least comprising:

  • generating or obtaining a radio map, comprising a plurality of sets of positioning reference data, wherein at least one set of positioning reference data of the plurality of sets of positioning reference data comprises;

    a respective position information obtained or generated based on position-related information from at least one sensor, anda respective signal characteristic representation of signal strength associated with at least one received signal from at least one wireless coverage providing entity, the respective signal characteristic further comprising an identifier of the at least one wireless coverage providing entity,the method further comprising,obtaining at least a first manual position information and a second manual position information, each of which is associated with at least one position information received from a user interface, andcorrecting at least one position information of a set of positioning reference data of said plurality of sets of positioning reference data based on said at least a first manual position information and a second manual position information, said correcting comprising;

    estimating a trajectory representation between said first manual position information and said second manual position information using indoor map information, wherein the estimated trajectory information is a shortest route between the first manual position information and the second manual position information that matches the indoor map and does not violate a barrier of the indoor map, andcorrecting said at least one position information based on the estimated trajectory representation.

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