Question: In E-UTRAN, what is the primary purpose of the Assistance Data Transfer Procedure between a User Equipment (UE) and an Enhanced Serving Mobile Location Centre (E-SMLC)?
Option 1: To establish a voice call connection for emergency services
Option 2: To facilitate UE's handover from one cell to another
Option 3: To enable the UE to request and receive positioning assistance data for location determination
Option 4: To manage UE's Quality of Service (QoS) settings for data transmission
Explanation: The Assistance Data Transfer Procedure is crucial for positioning purposes, allowing the UE to autonomously determine its location or as part of a network-initiated positioning procedure. This procedure ensures the UE receives necessary assistance data from the E-SMLC, enhancing location accuracy and efficiency in the E-UTRAN network.