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AREA-BASED POSITIONING METHOD IN MOBILE COMMUNICATIONS SYSTEM

  • US 20100167757A1
  • Filed: 03/09/2010
  • Published: 07/01/2010
  • Est. Priority Date: 08/11/2005
  • Status: Active Grant
First Claim
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1. An area-based positioning method for a mobile communications system wherein said system is conformed to the existing Open Mobile Alliance SUPL standard, the method performed by a server and comprising:

  • sending a SUPL INIT message to a SET in order to initiate a SUPL procedure for an area event triggered session, based upon a positioning request for the SET, the SUPL INIT message comprising a session-id, an intended positioning method, a proxy/non-proxy mode indicator, and a trigger type indicator;

    sending a SUPL TRIGGERED RESPONSE message to the SET in response to receiving a SUPL TRIGGERED START message from the SET in order to start an area event triggered session with the SET,wherein the SUPL TRIGGERED START message comprising a session-id, a location-id, and SET capabilities, and the SUPL TRIGGERED RESPONSE message comprises at least one of a session-id, a positioning method, trigger parameters, and location identifiers of an area specified for the area event triggered session;

    receiving a SUPL POS INIT message from the SET to start the area event triggered session, when a comparison performed by the SET of a current area-id and the location identifiers of the area specified for the area event triggered session indicates that positioning of the SET is to be executed;

    exchanging position procedure messages with the SET during the positioning session to calculate actual positioning information indicating longitudinal and latitudinal values of the SET;

    sending a SUPL REPORT message to the SET, the SUPL REPORT message including the session-id and the calculated actual positioning information of the SET, in order to allow the SET to compare the calculated actual positioning information with the trigger parameters; and

    receiving a SUPL REPORT message from the SET, the SUPL REPORT message including the session-id and the calculated actual positioning information of the SET, if the calculated actual positioning information indicates that the trigger parameters are satisfied by the SET.

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