Patent ID: 7796993

Claim:
A method for providing a location value of a Target Secure User Plane Location (SUPL) Enabled Terminal (SET) (Target SET) according to a request of a Secure User Plane Location AGENT (SUPL AGENT) in a location information providing system, the method comprising: (1) exchanging a location service initiating message (SUPL INIT message) and a triggered location service start message (SUPL TRIGGERED START message) by a location server (H-SLP) and the Target SET, and obtaining a positioning method and criteria for the triggered location service and starting the triggered location service by the Target SET; (2) determining if the H-SLP receives the SUPL INIT message for starting positioning from the Target SET within a specific period by the H-SLP; (3) transmitting a positioning start inducing message to the Target SET by the H-SLP when the SUPL INIT message does not arrive the Target SET; (4) receiving the positioning start inducing message and transmitting the SUPL INIT START message to the H-SLP by the Target SET; (5) performing the positioning by the H-SLP and the Target SET; and (6) transmitting a location value resulting from the positioning to the SUPL AGENT by the H-SLP.