Method for dynamically adjusting and migrating service function chain in network slice scene

Abstract

The invention relates to a method for dynamically adjusting and migrating a service function chain in a network slice scene, and belongs to the technical field of mobile communication. The method comprises the following steps: S1, in a network slice scene, considering an SFC migration problem caused by traffic change due to service request change and a migration chain reaction brought by SFC migration due to lack of prediction of SFC resource demands, and adopting an algorithm based on an integrated deep neural network to predict a traffic change condition; s2, establishing an SFC migration penalty minimization model under the constraint of calculation, memory and bandwidth resources; s3, converting a traffic prediction result into a future resource request condition of the SFC, sensing a physical node and link resource occupation condition, and minimizing an optimal strategy through migration of the SFC; and S4, obtaining an optimal strategy of SFC migration. By adopting the method, the punishment of operators can be reduced, the probability of migration chain reaction is reduced, and the service reliability is ensured.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a method for dynamically adjusting and migrating service function chains in a network slicing scenario. Background technique [0002] Through network slicing technology, the current cellular network system is virtualized into multiple logical networks. With the help of technologies such as network function virtualization (NFV) and software-defined networking (SDN), the isolation of various modules such as access network and core network can be realized in the underlying infrastructure, and the flexible arrangement and configuration of network services can be realized. At present, the use of NFV / SDN technology as the basic technology for 5G network development has been generally recognized by major standard organizations around the world. [0003] As an emerging network architecture, SDN decouples the traditional network architecture that is tightly coupled with networ...

AI Technical Summary

Problems solved by technology

Most of the existing relevant literature is based on distributed prediction and perception of node resources, and then uploads the perception results to the SDN controller to rearrange the SFC. extend

In addition, in the face of the high-dimensional and complex VNF migration remapping space, existing heuristic algorithms are not enough to find the optimal VNF migration scheme

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