Question: What is the maximum Time To First Fix (TTFF) for some 5G positioning services that may require a trade-off with other performance metrics, such as horizontal accuracy?
Option 1: 5 seconds
Option 2: 10 seconds
Option 3: 20 seconds
Option 4: 30 seconds
Explanation: According to the 5G system's performance requirements for positioning services, while some services aim for a TTFF of less than 10 seconds, there is a noted trade-off with other performances (e.g., horizontal accuracy) for achieving such rapid fixes. The general maximum TTFF for ensuring better overall performance (like steady-state accuracy of 0.3m after this period) is specified as less than 30 seconds. This highlights the system's flexibility and prioritization of different service requirements based on use case needs.