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Method and apparatus for using historic position and network information for determining an approximate position of a mobile device

  • US 10,440,515 B2
  • Filed: 12/15/2016
  • Issued: 10/08/2019
  • Est. Priority Date: 01/17/2007
  • Status: Active Grant
First Claim
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1. A method for supporting positioning in Secure User Plane Location (SUPL) for a SUPL Enabled Terminal (SET) comprising:

  • obtaining cell or access point information for a radio access network with which the SET communicates;

    generating a SUPL position initiation (SUPL POS INIT) message to send to a SUPL Location Platform (SLP), the SUPL POS INIT message comprising a Location ID parameter and a Multiple Location IDs parameter, wherein;

    the Multiple Location IDs parameter includes prior location ID parameter data and associated time stamps for the prior location ID parameter data and a Serving Cell flag indicating whether the prior location ID parameter data represents a serving cell or an idle cell based on the obtained cell or access point information for the radio access network with which the SET communicates;

    the Location ID parameter includes location ID parameter data and a Serving Cell flag indicating whether the location ID parameter data represents a serving cell or an idle cell to indicate a most current serving cell or serving access point for the SET based on the obtained cell or access point information for the radio access network with which the SET communicates and an associated status of the location ID parameter data, wherein the associated status comprises at least one of a plurality of predefined states of the Location ID parameter, the plurality of predefined states comprising “

    not current,”



    current,”

    or “

    unknown;

    ” and

    transmitting the SUPL POS INIT message to the SLP.

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