A collaborative mapping method for node importance-aware transparent virtual optical network

A technology of virtual optical network and mapping method, which is applied in the field of collaborative mapping of transparent virtual optical network, can solve the problems of multi-spectrum resources, single measurement of node importance, and consumption of link mapping stage, so as to ensure service quality and improve acceptance Probability, effect of guaranteed success rate

A technology of virtual optical network and mapping method, which is applied in the field of collaborative mapping of transparent virtual optical network, can solve the problems of multi-spectrum resources, single measurement of node importance, and consumption of link mapping stage, so as to ensure service quality and improve acceptance Probability, effect of guaranteed success rate

CN108377220BActive Publication Date: 2020-10-02CHONGQING UNIV OF POSTS & TELECOMM
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  • A collaborative mapping method for node importance-aware transparent virtual optical network
  • A collaborative mapping method for node importance-aware transparent virtual optical network
  • A collaborative mapping method for node importance-aware transparent virtual optical network

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Embodiment

[0047] figure 1 For a transparent virtual optical network service request, the number in the box indicates the computing resource size requested by the virtual node, and the number on the link indicates the bandwidth resource size requested by the virtual optical link, and the unit is frequency slot. figure 2 Indicates the underlying elastic optical network. The number in the box represents the remaining available computing resource size of the node. A small square on the link represents a frequency slot. Coloring indicates whether the frequency slot is available, such as the third on link A-B. The first small square is colored black, indicating that the third frequency slot is unavailable, and the fourth small square on link A-B is colored white, indicating that the fourth frequency slot is available. image 3 Layered auxiliary map for the third layer. Figure 4 A dynamic graph for node-link co-mapping. Figure 5 for figure 1 The mapping result of the medium-transparent v...

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Abstract

The invention relates to a transparent virtual optical network collaborative mapping method for node importance perception, and belongs to the technical field of optical fiber communication. In the virtual network node mapping stage, the method designs the importance measurement formulas of virtual nodes and physical nodes, comprehensively evaluates the proximity of unmapped nodes and mapped nodes, and the spectral density of mapped paths; and adopts the node-link cooperative mapping method , while successfully mapping a pair of adjacent virtual nodes, immediately map the virtual optical link between them, and allocate spectrum resources on the mapped physical path. The present invention transmits more virtual optical network services by using fewer spectrum resources, reduces link spectrum fragmentation and enhances the compactness of node mapping, improves network operators' income, and shortens the length of virtual optical link mapping. The service quality of the business is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and relates to a transparent virtual optical network collaborative mapping method for node importance perception. Background technique [0002] In recent years, with the continuous development of the Internet, more and more new applications have sprung up like mushrooms after rain, such as video on demand, smart home, mobile technology, etc., resulting in explosive growth of network data traffic, giving transmission bandwidth (spectrum) The communication backbone network with limited resources has brought continuous and huge challenges. Compared with the wavelength division multiplexing network with coarse wavelength allocation granularity, the elastic optical network based on optical orthogonal frequency division multiplexing technology can exactly meet the bandwidth request for service allocation by using optical devices with variable bandwidth and finer allocation granulari...

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Application Information

Patent Timeline
02 Oct 2020
Publication
CN108377220B
IPC
H04L12/721; H04L12/751; H04Q11/00; H04L45/02
CPC
H04L45/02; H04L45/12; H04Q11/0005; H04Q11/0062; H04Q2011/0079; H04Q2011/0073; H04Q2011/0086
Inventors
刘焕淋; 吕磊