Terminal status discovery in secure user plane location positioning procedure
A user and mobile terminal technology, applied in the SUPL field, can solve problems such as the loss of synchronization of status information, and achieve the effect of reducing response time and saving processing power
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[0025] Figure 1 shows the SUPL session initiated by the network in the SUPL architecture. The SUPL location platform (SLP) 10 includes a SUPL location center (SLC) (not shown) and a SUPL location center (not shown). SLC and SPC can be integrated into a single system. The SLC system coordinates the operation of SUPL in the network and manages the SPC. The SPC provides GPS (Global Positioning System) assistance data to the SET 30 and performs the function of calculating the position of the SET 30.
[0026] The SET 30 supports the procedures defined by SUPL when it interacts with the network through the user plane (for example, TCP / IP (Transmission Control Protocol / Internet Protocol) over GPRS). The SET 30 supports SET-based and / or SET-assisted positioning calculation.
[0027] The SLP 10 uses the SUPL INIT message to initiate a SUPL session with the SET 30. This message is used in the SUPL service initiated by the network. The message may include the initial target SET user notifica...
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