Question: What is a key characteristic of how the Motion Sensor Positioning method, utilizing sensors like accelerometers and gyros in a User Equipment (UE), determines the UE's location in an Evolved Universal Terrestrial Radio Access Network (E-UTRAN)?
Option 1: It directly calculates the UE's absolute position using satellite signals.
Option 2: It relies solely on cell ID to estimate the UE's location.
Option 3: It uses a combination of GPS and Cell ID for positioning.
Option 4: It estimates a relative displacement from a reference position/time, requiring hybrid positioning for absolute location.
Explanation: The Motion Sensor Positioning method in E-UTRAN calculates the UE's movement (relative displacement) from a known starting point (reference position and/or time) using onboard sensors. This approach does not independently determine the absolute position; instead, it is designed to be used in conjunction with other positioning methods for hybrid positioning to achieve accurate absolute location determination.