Question: In a cellular network using FDD, what is the maximum allowed cell re-selection delay with a DRX cycle length of 1.28 seconds, as per the specified performance threshold?
Option 1: Less than 5 seconds
Option 2: Between 8 to 12 seconds
Option 3: Greater than 15 seconds but less than 20 seconds
Option 4: Less than 8 seconds
Explanation: This answer is correct because, according to the specified requirement for cell re-selection delay in a scenario with a DRX cycle length of 1.28 seconds, the delay must be less than 8 seconds to meet the performance threshold, ensuring efficient and reliable handover between cells without undue delay, crucial for maintaining seamless user experience in mobile networks.