Question: In E-UTRA handover scenarios, what is the maximum allowed interruption time on the original cell during the initial handover period, and what is the minimum required rate of successful handovers observed in repeated tests?
Option 1: 5ms interruption, with at least 80% successful handovers
Option 2: 1ms interruption, with at least 90% successful handovers
Option 3: 10ms interruption, with at least 95% successful handovers
Option 4: 2ms interruption, with at least 85% successful handovers
Explanation: This answer reflects the constraints for a seamless E-UTRA handover experience: an interruption not exceeding 1ms on the original cell during the initial handover period, coupled with a high success rate of at least 90% in repeated tests, ensuring reliable network performance.