UE Edge-Server Failure Detection for Service Area Exit

The patent applies preliminary action by having the UE proactively report its location information to the core network before actually moving out of the EAS service area. The core network pre-calculates and stores service area boundaries, enabling it to detect when the UE approaches the boundary and send advance notifications to the EAS. This allows the system to prepare for potential service disruption before it occurs, resolving the contradiction by enabling both service continuity maintenance and timely failure detection.

The patent implements feedback by establishing a bidirectional communication mechanism where the UE reports location information to the core network, and the core network sends back notifications about service area boundary crossings to both the UE and EAS. This feedback loop enables precise detection of transition events without requiring complex continuous monitoring on the UE side, as the core network performs the complex boundary detection calculations and communicates results back to relevant parties.