VNF instance migration method, session service system and session processing method

By utilizing a session service system that combines performance monitoring and fast/slow path network element cascading during VNF instance migration, intelligent decision-making and port number priority configuration were achieved, resolving traffic interruption and service stability issues caused by VNF instance migration and realizing a highly reliable and efficient migration process.

CN121887664APending Publication Date: 2026-04-17CHINA MOBILE (SUZHOU) SOFTWARE TECH CO LTD +1
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Patent Information

Application Number
CN202512004017.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-29
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

In existing technologies, VNF instance migration can lead to traffic interruptions and affect the service stability of instances in the same SFC network element that do not require migration.

Method used

By using performance monitoring information from multiple network element clusters, the target VNF ​​instance to be migrated is determined. During the migration process, the session service system with fast and slow path network elements is used to make intelligent decisions and configure port number priorities to ensure that the service stability of other instances is not affected during the migration process.

Benefits of technology

It achieves highly reliable migration of VNF instances, reduces the probability of service failures, ensures the continuity of existing sessions and the efficient scheduling of new sessions, and reduces the impact of failures.

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Abstract

The invention relates to the technical field of communication, and particularly provides a VNF (Virtual Network Function) instance migration method, a session service system and a session processing method, and the method comprises the steps: determining a to-be-migrated target VNF instance, a first network element cluster where the target VNF instance is currently located, and a second network element cluster undertaking the migrated target VNF instance; sending an instance migration instruction to a first main slow path network element in the first network element cluster, wherein the first main slow path network element deploys the target VNF instance; and adding a first target port number allocated for a target VNF instance on each fast path network element in the second network element cluster to a target selectable port number set associated with the target VNF instance, setting the priority of the first target port number to be the highest, and setting the priority of at least one second target port number to be the lowest, the second target port number is a port number allocated to a target VNF instance deployed for each fast path network element in the first network element cluster; according to the session migration method and device, the influence of single session migration on other sessions is eliminated, and the connection reliability of the sessions in the session migration process is improved.
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