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Service function chain reconfiguration method based on load balancing

A service function chain and load balancing technology, applied in the field of mobile communications, can solve problems such as difficult to achieve optimization effects, achieve the effects of optimizing migration costs, saving server resources, and ensuring stability

Active Publication Date: 2020-08-14
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing heuristic VNFI migration algorithm usually optimizes network performance in a single time slot. In the face of complex and changeable network environments, such heuristic algorithms are difficult to achieve ideal optimization results.

Method used

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  • Service function chain reconfiguration method based on load balancing
  • Service function chain reconfiguration method based on load balancing
  • Service function chain reconfiguration method based on load balancing

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Embodiment Construction

[0024] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] In the technical solution of the present invention, aiming at the problem of uneven server load caused by the dynamically changing rate requirements of user SFCs in the NFV environment, VNFI migration and resource reconfiguration are jointly considered, and the optimization goal is to minimize the VNFI migration overhead, and dueling DQN is used to strengthen The learning algorithm finds a suitable VNFI migration and resource reconfiguration strategy. Specifically include the following steps:

[0026] S1: Use the wireless rate available to users as the basis for SFC resource allocation, that is, the processing rate and link transmission bandwidth required by each VNF instance of SFC are consistent with the wireless rate available to users, and based on the dynamic wireless rate requirements of SFC, VNF migration overhead minimization m...

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Abstract

The invention relates to a service function chain reconfiguration method based on load balancing, and belongs to the technical field of mobile communication. The method aims at solving the problem that in a network function virtualization framework, server loads are uneven due to the fact that the wireless rate requirement of a user SFC changes. On the premise of ensuring the load balance of eachserver and the user request performance, the migration overhead of a virtual network function instance is optimized by taking the wireless subcarrier resource capacity and the limited link bandwidth resource capacity of a small base station as constraints, and a resource reconfiguration and virtual network function migration strategy is formulated for a deployed service function chain. According to the method, based on a Duffing Dep Q Network reinforcement learning algorithm, the load balance of each server and the performance requirement of a user request are ensured, the stability of the network is improved, and server resources are saved.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a load balancing-based service function chain reconfiguration method. Background technique [0002] Network Functions Virtualization (Network Functions Virtualization, NFV) technology decouples network functions from dedicated traditional hardware devices through cloud computing and virtualization technologies, and deploys network functions on standardized high-performance servers in the form of software. Complete the corresponding network service. In the NFV architecture, the user's service request is completed by the service function chain (SFC). A service function chain is composed of multiple virtual network functions (VNFs) connected in order. To provide the required data flow, multiple SFCs of the same service type form a network slice. How to deploy SFC on the underlying physical network is a key issue in NFV technology. The essence of the SFC deployment prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/50G06N3/04H04L12/24H04L12/743
CPCG06F9/5088G06F9/505H04L41/0803H04L45/7453G06N3/045
Inventor 唐伦王晓贺小雨陈前斌刘占军
Owner CHONGQING UNIV OF POSTS & TELECOMM
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