Edge Context Transfer via EES Subscription After Relocation Failure
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Solution Overview
Problem
The temporary suspension or interruption of application services occurs when a new edge application server replaces the current server during a service area change, affecting transfer continuity.
Innovation Solution
A context transfer method that includes subscribing to EES capability exposure information and coordinating the transfer of both application and EEC contexts to ensure seamless switching between edge application servers, thereby reducing service suspension duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a new edge application server is selected to replace the current service provider when terminal moves out of service area, then service optimization is achieved, but application service suspension or interruption occurs
Solution Approach 1:
The patent applies preliminary action by having the target EAS subscribe to EES capability exposure information before the EEC context relocation is completed. This advance preparation ensures that when the terminal moves to a new service area, the target server is already ready to receive and process the context information, eliminating service interruption and achieving both service optimization and continuity.
2Reliability
If EEC context relocation procedure is re-executed when relocation fails, then correct transfer can be achieved, but service suspension duration increases
Solution Approach 1:
The patent implements preliminary action by having the target EAS subscribe to EES capability exposure information in advance, before the relocation procedure is re-executed. This preparation work is done proactively so that when the failure occurs and re-execution is needed, the target server is already configured and ready, reducing the time loss while ensuring accurate transfer.
Solution Approach 2:
The patent uses feedback by monitoring the success or failure of EEC context relocation and triggering appropriate responses. When relocation fails, the system receives feedback about the failure state and automatically initiates re-execution of the relocation procedure, ensuring that the transfer is eventually completed accurately while minimizing service disruption.
3Reliability
If target EAS subscribes to EES capability exposure information in advance, then service transfer continuity is improved, but system complexity increases
Solution Approach 1:
The patent applies universality by making the target EAS perform multiple functions: it serves as both the future service provider and the subscriber to EES capability exposure information. This multi-functionality reduces the need for separate dedicated subscription mechanisms, achieving service transfer continuity without significantly increasing system complexity.
Data Source
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AI summary
This application provides a context transfer method and a communication apparatus. The method includes: When an edge enabler client context fails to be relocated from a second edge enabler server to a first edge enabler server, a first apparatus sends first information to a first edge application server corresponding to the first edge enabler server, where the first information is used by the first edge application server to subscribe to edge enabler server capability exposure information from the first edge enabler server. In the foregoing technical solution, when an edge enabler client context fails to be transferred, the first apparatus may indicate a target edge application server to subscribe to edge enabler server capability exposure information from a target edge enabler server, so that re-execution of an entire edge enabler client context relocation procedure can be avoided, and duration of suspension or interruption of an application service in an edge application server switching process can be reduced, thereby improving transfer continuity of the application service.