Question: In E-UTRAN, what characterizes the Enhanced Cell ID (E-CID) positioning method compared to the basic Cell ID (CID) method?
Option 1: Utilization of a different serving eNode B for location estimation
Option 2: Exclusive reliance on paging for cell information
Option 3: Use of additional UE and/or E-UTRAN radio resource measurements to improve location estimates
Option 4: Mandatory execution of tracking area updates for positioning
Explanation: The Enhanced Cell ID (E-CID) positioning method is distinguished from the basic Cell ID (CID) method by its employment of supplementary measurements from both the User Equipment (UE) and the E-UTRAN radio resources. This augmentation enhances the precision of UE location estimates, setting E-CID apart in terms of its technical approach to positioning within the E-UTRAN network.