Wavelength routing method and system based on wavelength division multiplexing optical network
A technology of multiplexing optical and wavelength division multiplexing, which is applied in wavelength division multiplexing systems, optical multiplexing systems, selection devices for multiplexing systems, etc. and other problems to achieve the effect of reducing node equipment resources, improving utilization, and reducing costs
Inactive Publication Date: 2013-03-27
ZTE CORP
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Problems solved by technology
In the simulation of anti-fiber breakage, since the wavelength channel is arbitrarily selected from the idle wavelength for use by the recovery path, when traversing the simulation, the wavelength occupancy of the recovery path is also scattered in each wavelength channel, which will lead to simulation recovery When the total number of wavelengths used is large, more node equipment resources are required to support fiber break recovery, which ultimately leads to an increase in the cost of the network planning solution
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[0033] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.
[0034] The main idea of the wavelength routing method of the present invention is: when restoring the path of the middle segment service, the wavelength in the reserved channel in the optical fiber is preferentially used to allocate the wavelength routing, and the specific process is as follows figure 1 shown, including the following steps:
[0035] Step 101, setting reserved channels of all optical fibers in the network;
[0036] Step 102, when determining the restoration path of the interrupted service, use the wavelength in the reserved channel to perform wavelength routing assignment for the restoration path.
[0037] When the present invention is planning a wavelength division multiplexing optical network, first, based on the topology structure of the network and the deployment service (that is, the service d...
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A wavelength routing method based on wavelength division multiplexing optical network is disclosed by the present invention, which includes: setting reserved channels of all fibers in the network (101); when determining a recovery path for interrupted service, using wavelengths of the reserved channels to perform wavelength routing assignment for the recovery path (102). A wavelength routing system is also provided by the present invention. According to the present invention, the quantity of total wavelengths of fibers occupied by wavelength routing for the recovery path is reduced and the wavelength utilization rate is improved.
Description
technical field [0001] The invention relates to the technical field of wavelength routing, in particular to a wavelength routing method and system based on a wavelength division multiplexing optical network. Background technique [0002] In the wavelength division multiplexing optical network system, the path of the service is determined by the route of the service on the topology (topological route) and the wavelength allocation in each hop route. It is also necessary to allocate a good wavelength for each topology route. The allocation of such paths is called wavelength routing. [0003] When planning and designing an optical network, it is necessary to simulate the anti-fiber breakage of the planned network to verify the robustness of the network. Based on the planned solution, simulate the network to re-find the wavelength route of the interrupted service under the topological condition of a fiber break to determine whether the network can guarantee service recovery wh...
Claims
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IPC IPC(8): H04Q11/00H04J14/02
CPCH04Q11/0062H04Q2011/0081H04J14/0284H04J14/0295H04Q2011/0073
Inventor 李非
Owner ZTE CORP