Question: In A-GPS testing, as per satellite constellation requirements, what is the minimum elevation criterion for selecting a subset of satellites for which other assistance data is available and used to calculate HDOP?
Option 1: Above 5 degrees elevation with respect to the UE (User Equipment)
Option 2: Above 15 degrees elevation with respect to the UE (User Equipment)
Option 3: Exactly 10 degrees elevation with respect to the UE (User Equipment)
Option 4: Below 20 degrees elevation with respect to the UE (User Equipment)
Explanation: This question assesses understanding of specific technical requirements for A-GPS testing. The correct answer, 'Above 15 degrees elevation,' is crucial because it directly impacts the calculation of HDOP in test scenarios, ensuring a certain level of signal quality and geometric diversity among selected satellites for accurate location determination.