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Multicast virtual network function deployment method based on estimation of distribution algorithm

A technology of virtual network function and distribution estimation algorithm, applied in the field of network communication technology and virtualization, to achieve the effect of algorithm performance advantage

Inactive Publication Date: 2018-08-14
SOUTHWEST JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

The MVNFD problem is an NP-hard problem, and the current academic research on this problem is still in its infancy.

Method used

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  • Multicast virtual network function deployment method based on estimation of distribution algorithm
  • Multicast virtual network function deployment method based on estimation of distribution algorithm
  • Multicast virtual network function deployment method based on estimation of distribution algorithm

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Embodiment Construction

[0061] Specific embodiments of the present invention will be further described in detail below.

[0062] First, let’s introduce the MVNFD problem in detail. A communication network can be expressed as G=(V,E), where V and E represent node sets and link sets respectively, and V={v 1 ,v 2 ,..,v |v|}, E={e 1 ,e 2 ,...,e |E|}, and the number of nodes and links are denoted as |V| and |E|, respectively. When two nodes communicate with each other, data transmission in the link will cause delay, which is called link delay. Delay(e i ) means link e i The link delay, where e i ∈E, i=1,2,...,|E|.

[0063] Because during the data transmission process, the intermediate nodes are only responsible for storing and forwarding, and its delay can be ignored, so the link delay between any two indirectly connected nodes can be calculated by directly comparing the delays of the links they pass through. plus get. Before we deploy the virtual network function, the multicast source s to d ...

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Abstract

The invention discloses a multicast virtualized network function deployment method based on estimation of distribution algorithm. The method comprises the steps of with the optimization object of minimizing propagation delay, obtaining a multicast tree on which a source node can reach all destination nodes; and on the basis of the estimation of distribution algorithm, with the object of minimizingservice delay, placing the same service function chaining for each path from the source node to multicast group members in the multicast tree, and determining a virtual network function deployment scheme on the path. The method has the beneficial effects that network function virtualization is introduced into multicast, and a network service function chaining problem in a multicast network is split into two subproblems, namely, the minimum propagation delay multicast tree generation problem and the virtualized network function optimal deployment problem in the optimal multicast tree. A simulation experiment and data analysis show that compared with a genetic algorithm, the method provided by the invention has the advantages that the algorithm performance is clearly high, and a better solution is obtained.

Description

technical field [0001] The invention relates to the field of network communication technology and virtualization technology, in particular to a multicast virtual network function deployment method based on a distribution estimation algorithm. Background technique [0002] In recent years, with the continuous innovation of network technology and the rapid development of high-speed broadband networks, more and more network services such as video conferencing, online games, data distribution, and distance education have appeared on the market. The requirements of these network communication services are different from the traditional point-to-point network communication, requiring the receiver of data to be a group of destination nodes. The emergence of multicast technology is to solve this problem. Multicast is a method of multiplexing data information from a source node to a group of target nodes through a tree network structure. Current multicast services require traversin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/761H04L12/753H04L12/727H04L12/24H04L45/16H04L45/121
CPCH04L45/121H04L45/16H04L45/48H04L41/00H04L41/0893
Inventor 邢焕来王心汉戴朋林罗寿西赵路伟
Owner SOUTHWEST JIAOTONG UNIV
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