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Location based service (LBS) system, method and apparatus for triggering of mobile station LBS applications

  • US 8,938,253 B2
  • Filed: 03/13/2009
  • Issued: 01/20/2015
  • Est. Priority Date: 01/31/2003
  • Status: Active Grant
First Claim
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1. A method for triggering an application in a mobile station, the method comprising:

  • receiving at a first layer of a protocol stack, over a wireless communication link, a predetermined message having a value in a message field, wherein receiving the predetermined message comprises receiving a Short Message Services (SMS) message, the SMS message including a teleservice identifier field;

    determining that the value in the message field of the predetermined message is set to a predetermined field value, wherein the determining comprises determining that the teleservice identifier field is set to the predetermined field value;

    interpreting the message for a Location Based Services (LBS) application client function at a second lower layer of the protocol stack based on the value in the message field;

    passing information contained in a payload of the message to the LBS application client function; and

    commanding, via the application client function, a position location engine within the mobile station and within a third layer of the protocol stack beneath the second layer, based on the payload, wherein commanding the position location engine comprises, in response to the determining, identifying a network Mobile Positioning Center (MPC) as a source of the predetermined message and transmitting an authorizing message from the mobile station to the network MPC, wherein the predetermined field value indicates that a corresponding SMS message is intended for the application client function and the position location engine, and the commanding comprises authorizing triggering of a position location operation within the mobile device in response to identifying that the teleservice identifier field of the SMS message is set to the predetermined field value.

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