name: SLP
full_form: SUPL Location Platform
context: Since SUPL is by definition carried over the user plane, it is not really applicable to operations terminating at the eNode B. Thus, in some cases where information from the eNode B and UE needs to be merged for a positioning operation, SUPL operations must take place in combination with control-plane procedures over LPPa. This situation could arise in the case of UE-assisted OTDOA, for example, in which the SLP needs to provide the UE (in a SUPL session) with assistance data supplied by various eNode Bs. This clause uses a UE-assisted OTDOA positioning operation as a running example. Although the positioning server in this operation is of course the SLP, the existence of the Llp interface means that the SLP can communicate freely with the E-SMLC via the SPC. In particular, this means that assistance data that were delivered to the E-SMLC via LPPa can be transferred over to the SLP for delivery to the UE via LPP over SUPL. Several ways to realise this general behaviour are possible. In
description: The SUPL Location Platform (SLP) manages positioning operations, including User Equipment (UE)-assisted Observed Time Difference of Arrival (OTDOA). It communicates with the Evolved Serving Mobile Location Center (E-SMLC) via the SPC interface and with the UE via the SUPL protocol over the user plane. The SLP provides assistance data to the UE for positioning operations, which may involve merging information from multiple eNodeBs.
explanation: The text describes the SLP's role in managing positioning within a network, its interactions with other network elements (E-SMLC, UE, eNodeBs), and its use of specific protocols (SUPL, SPC). These characteristics define it as a Network Function.
section_title: B.4	Procedures combining C-plane and U-plane operations
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biotag_Description: O,B-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,B-Device,I-Device,O,B-Measurement,I-Measurement,I-Measurement,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,B-Device,O,O,B-Protocol,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O