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Calculating method of cross-photosphere electric straton wavelength route based on WSON (Wavelength Division Multiplexing) network

A technology of electrical layer and routing, which is applied in the field of optical communication, can solve problems such as the inability to calculate the wavelength of the electrical layer, and achieve the effect of reducing connection blocking rate and improving service quality

Active Publication Date: 2016-05-25
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is the problem that the existing calculation method of the electrical layer sub-wavelength LSP across the optical layer cannot calculate the globally optimal electrical layer sub-wavelength LSP across the optical layer

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  • Calculating method of cross-photosphere electric straton wavelength route based on WSON (Wavelength Division Multiplexing) network
  • Calculating method of cross-photosphere electric straton wavelength route based on WSON (Wavelength Division Multiplexing) network
  • Calculating method of cross-photosphere electric straton wavelength route based on WSON (Wavelength Division Multiplexing) network

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] The present invention provides a calculation method for the electrical layer sub-wavelength routing across the optical layer based on the WSON network, such as image 3 As shown, the method includes the following steps:

[0035] Step S1. After receiving the route calculation request of the OTN electrical layer sub-wavelength LSP, pre-calculate the OTN optical layer wavelength LSP.

[0036] Step S2. Abstract the virtual network topology VNT according to the OTN optical layer wavelength LSP, and then add the virtual network topology VNT to the actual OTN electrical layer topology to form a topology and generate an OTN electrical layer routing matrix.

[0037] Such as Figure 4 As shown, it is the abstracted VNT diagram; such as Figure 5 Shown is the topology diagram formed by adding VNT to the actual OTN electrical layer topology.

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Abstract

The invention discloses a calculating method of cross-photosphere electric straton wavelength route based on WSON network. The method comprises following steps: after receiving a route calculation request of OTN (Optical Transport Network) electric straton wavelength LSP, calculating the OTN electric straton wavelength LSP in advance; extracting a virtual network topology VNT according to the OTN electric straton wavelength LSP; adding the virtual network topology VNT in an OTN electric layer topology so as to form a topology; generating an OTN electric layer matrix; according to the OTN electric layer matrix, calculating the OTN electric straton wavelength LSP satisfying a route constraint by using a Dijsktra algorithm. According to the method of the invention, when a route protocol and a signaling protocol are extended to the minimum, the global optimum cross-photosphere electric straton wavelength LSP route is calculated; the connection blocking rate is reduced; and the service quality of the network is improved.

Description

technical field [0001] The invention relates to the technical field of optical communication, and in particular to a calculation method of the electrical layer sub-wavelength routing across the optical layer based on the WSON network. Background technique [0002] WSON network is based on WDM (WavelengthDivisionMultiplexing, wavelength division multiplexing) transport network ASON (AutomaticallySwitchedOpticalNetwork, automatically switched optical network), by introducing the control plane into the wavelength network, using GMPLS (GeneralizedMultiprotocolLabelSwitching, general multi-protocol label switching protocol) and path calculation unit And other control plane technologies, realize the dynamic scheduling of wavelength routing, realize the intelligence of wavelength scheduling, and improve the flexibility of WDM network scheduling and the efficiency of network management. In order to establish a connection in the WSON network, it is necessary to determine a route (tha...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04L12/721
CPCH04L45/12H04L45/62H04Q11/0005H04Q11/0062H04Q2011/009
Inventor 姜剑车瑶张炳焱邱晨
Owner FENGHUO COMM SCI & TECH CO LTD
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