Question: What is the primary purpose of using a barometric pressure sensor in User Equipment (UE) positioning within an Evolved Universal Terrestrial Radio Access Network (E-UTRAN)?
Option 1: To accurately determine the UE's horizontal location (latitude and longitude)
Option 2: To calculate the vertical component of the UE's position (altitude or height)
Option 3: To enhance cellular network coverage by adjusting transmission power
Option 4: To provide real-time weather forecasts to the UE user
Explanation: The barometric pressure sensor method is utilized specifically for determining the vertical aspect of a User Equipment's (UE) location, such as its altitude or height. This is because changes in atmospheric pressure are closely correlated with changes in elevation. While it can be aided by additional data, its primary role is to provide the vertical component, which must then be combined with other positioning methods to achieve a full 3D positional fix (including latitude, longitude, and altitude).