Question: What is a key requirement for handovers occurring within the coverage area of a given network to maintain an active service for a mobile user?
Option 1: Seamless from the user's perspective, with no change in Quality of Service (QoS) experienced.
Option 2: Transparent to the user, but allowing for potential changes in QoS when switching radio environments.
Option 3: Visible to the user, requiring manual reconnection after each handover between different networks.
Option 4: Dependent on the type of active service, with seamless handovers only guaranteed for voice services.
Explanation: According to telecom principles for maintaining active services during mobility, handovers within the same network's coverage area should not disrupt the user's experience. Thus, seamlessness from the user's perspective is a key requirement, ensuring continuity of service without noticeable interruption.