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Encoding method and processing method of wavelength labels and nodes for flexible grid optical network

A wavelength label and flexible grid technology, which is applied in the field of processing methods and nodes, and the encoding method of wavelength labels in flexible grid optical networks, can solve the problems such as wavelength labels that are not applicable to flexible grid networks.

Active Publication Date: 2013-01-02
江苏盐西新城教育产业项目开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a wavelength label encoding method, processing method and node based on a flexible grid network, so as to solve the problem that there is no wavelength label suitable for a flexible grid network in the prior art

Method used

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  • Encoding method and processing method of wavelength labels and nodes for flexible grid optical network
  • Encoding method and processing method of wavelength labels and nodes for flexible grid optical network
  • Encoding method and processing method of wavelength labels and nodes for flexible grid optical network

Examples

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Embodiment 1

[0057] image 3 Shown is an example of flooding of available wavelength information in an inclusive list mode. A and B are two nodes that support a flexible grid network, and there is a direct optical fiber link between them. Nodes A and B support The minimum channel spacing granularity C.S. is 6.25GHz, and the corresponding bandwidth granularity SWG is 12.5GHz.

[0058] The bandwidth resource distribution on the link is shown in the figure. Gray area in the figure: spectrum with center frequency of 193.1-15×0.00625THz and bandwidth of 1×12.5GHz; spectrum with center frequency of 193.1-6×0.00625THz and bandwidth of 4×12.5GHz; center frequency of 193.1+15× The 0.00625THz spectrum with a bandwidth of 12.5GHz has been occupied, and the rest of the spectrum bandwidth resources can be used.

[0059] Using the label set representation of the Inclusive list, the node first judges the ability of this link to support flexible grids, so the flexible grid label coding format is used to...

Embodiment 2

[0063] Figure 4 Shown is an example of flooding of available wavelength information in an inclusive range. A and B are two nodes that support a flexible grid network, and there is a direct optical fiber link between them, and nodes A and B support The minimum channel spacing granularity C.S. is 6.25GHz, and the corresponding bandwidth granularity SWG is 12.5GHz.

[0064] The bandwidth resource distribution on the link is shown in the figure. Gray area in the figure: spectrum with center frequency of 193.1-15×0.00625THz and bandwidth of 1×12.5GHz; spectrum with center frequency of 193.1-6×0.00625THz and bandwidth of 4×12.5GHz; center frequency of 193.1+15× The 0.00625THz spectrum with a bandwidth of 12.5GHz has been occupied, and the rest of the spectrum bandwidth resources can be used.

[0065]Using the label set representation of the Inclusive range, the node first determines the ability of the link to support flexible grids, so the flexible grid label encoding format is u...

Embodiment 3

[0070] like Figure 5 Shown is an embodiment of the available wavelength information flooding of the Bit map set, A and B are two nodes supporting a flexible grid network, and there is a direct optical fiber link between them, A, B nodes The minimum supported channel spacing granularity C.S. is 6.25GHz, and the corresponding bandwidth granularity SWG is 12.5GHz.

[0071] The bandwidth resource distribution on the link is shown in the figure. Gray area in the figure: spectrum with center frequency of 193.1-15×0.00625THz and bandwidth of 1×12.5GHz; spectrum with center frequency of 193.1-9×0.00625THz and bandwidth of 4×12.5GHz; center frequency of 193.1+15× The 0.00625THz spectrum with a bandwidth of 12.5GHz has been occupied, and the rest of the spectrum bandwidth resources can be used.

[0072] First, the node judges the ability of this link to support flexible grids, so it adopts the flexible grid label coding format. When using the bitmap method, Number=16 represents the ...

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Abstract

The invention relates to an encoding method and a processing method of wavelength labels and nodes for a flexible grid optical network. The processing method of the wavelength labels includes that the nodes of the flexible grid optical network receive information carrying wavelength labels including grid capacity identifications corresponding to the wavelength labels and specific parameters of the wavelength labels; the nodes of the flexible grid optical network analyze the specific parameters of the wavelength labels according to the grid capacity identifications; and the nodes of the flexible grid optical network determine a center frequency and / or a spectral bandwidth of wavelength resources according to the analyzed specific parameters of the wavelength labels. According to the encoding method, the processing method and the nodes, flooding of flexible grid routing information and distribution of frequency spectrum resources in an establishing process of signaling of a label switch path (LSP) in a wavelength switched optical network (WSON) can be achieved from a control plane perspective.

Description

technical field [0001] The invention relates to a method for encoding wavelength labels by a control plane in a wavelength switched optical network (Wavelength Switched Optical Network, WSON for short), in particular to a method for encoding wavelength labels in a flexible grid optical network, a processing method and a node. Background technique [0002] Currently, in an optical transmission network, a dense wavelength division multiplexing (Dense Wavelength Division Multiplexing: DWDM for short) technology is generally used to implement the bearing of service data signals. A single wavelength carries a service signal, and the center frequency interval of adjacent wavelengths is usually fixed at 50 GHz (or 100 GHz), and the spectrum bandwidth resource allocated to each wavelength is also fixed at 50 GHz (or 100 GHz). With the growth of IP data Internet traffic and the emergence of high-speed services such as video-on-demand, high-definition TV, and cloud computing, the spee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04J14/02
CPCH04J14/0224H04J14/026H04J14/0267H04J14/0257H04J14/0258H04J14/02H04Q11/00H04Q2213/1301
Inventor 黎遥何文娟
Owner 江苏盐西新城教育产业项目开发有限公司
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