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Enhanced path-based virtual optical network mapping method

A technology of virtual optical network and mapping method, which is applied in the field of wavelength-switched optical network, and can solve problems such as reducing the mapping success rate and system revenue, spectrum slot resource allocation conflicts, and complex virtual optical network mapping.

Inactive Publication Date: 2018-03-13
HUZHOU TEACHERS COLLEGE
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Problems solved by technology

However, due to strict constraints, especially the three constraints of spectrum allocation (continuity, adjacency and non-overlapping constraints), the virtual optical network mapping (VONE) problem is very complicated
[0003] In the existing VONE scheme, path-based resource allocation is usually established, which does not consider the mapping of multiple paths through the same physical link, which will lead to spectrum slot resource allocation conflicts, reducing the mapping success rate and system benefits; Moreover, it uses the least mapped spectrum slot resources as the objective function, which will generate more fragments, reducing the mapping success rate and system benefits

Method used

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  • Enhanced path-based virtual optical network mapping method

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Embodiment Construction

[0046] The present invention proposes an enhanced path-based virtual optical network mapping method, which includes the following steps in turn:

[0047] a) According to the characteristics of virtual optical network mapping, create an expansion diagram ;

[0048] b) According to the endpoint of the virtual link, in the extended diagram Create multiple paths in

[0049] c) In the expanded graph Based on this, an enhanced path-based virtual optical network mapping integer linear programming (ILP) model is constructed;

[0050] d) Solve the established ILP model.

[0051] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0052] Such as figure 1 As shown, the undirected graph of the created SLICE network is , the number in the circular box indicates the node label, the number on the connecting line between the nodes indicates the number of spectrum slots, and the number next to the circular...

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Abstract

The invention discloses an enhanced path-based virtual optical network mapping method, including the following step: establishing a virtual optical network mapping model under an elastic optical network and a solving method thereof. Thereby, the sharing conflicts of spectrum slot resources on different paths of the same link can be avoided, a minimum spectrum slot is taken as an objective function, network resource fragments can be reduced, and thus the receiving rate and mapping revenue of virtual optical networks can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of wavelength switching optical networks, in particular to the technical field of an enhanced path-based virtual optical network mapping method in elastic optical networks. Background technique [0002] The rapid development of applications such as distributed video services, telemedicine systems, the Internet of Things, and mobile Internet has brought greater and more diverse bandwidth requirements to telecom networks and cloud data center networks. A virtual optical network technology based on SLICE (Spectrum-Sliced ​​Elastic Optical Path Network) optical network and software-defined network (SDN) optical network is proposed, which dynamically allocates server resources and networks of appropriate size according to user requests Spectrum resources can alleviate the resource waste of physical infrastructure and meet the needs of diversified and complex services. However, due to strict constraints, especial...

Claims

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Application Information

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IPC IPC(8): H04L12/911H04J14/02
CPCH04J14/0227H04L47/70
Inventor 陈晓华李春芝蒋云良
Owner HUZHOU TEACHERS COLLEGE
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