Routing calculation, core selection, spectrum allocation method and system based on cross-talk perception
A spectrum allocation and fiber core technology, applied in the field of communication networks, can solve problems affecting the transmission performance of multi-core spectrum flexible optical networks
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Embodiment 1
[0062] In this embodiment, the routing calculation, fiber core selection, and spectrum allocation methods based on crosstalk perception include:
[0063] S1 multi-fiber spectrum flexible optical network initialization. In Spectrum Flexible Optical Network G s =(L, N, C, F), where L represents a group of optical fiber links, N represents a group of optical handover nodes, C represents the core of a group of optical fiber links, F={F 0 , F 1 , F 2 ,...,F j ,...,F |F|-1} represents the set of states for available spectrum slots. When the number is F j When the spectral gap is occupied, F j =1; when the number is F j When the spectrum gap is free, F j =0. FM={0,1,2,...,j,...,|F|-1} represents a numbered set of available spectrum slots. (P, Q) ∈ L represents an optical fiber link from an optical switching node P to an optical switching node Q, where P, Q ∈ N. Set the maximum crosstalk threshold A of the fiber link max .
[0064] S2 sets the priority of each fiber core...
Embodiment 2
[0082] This embodiment is based on the routing calculation, fiber core selection, and spectrum allocation methods based on crosstalk perception. On the basis of Embodiment 1, it also includes establishing this group of connection requests, and evaluating the use status of the entire network spectrum resources and the blocking situation of connection requests.
Embodiment 3
[0084] This embodiment is based on a routing calculation, fiber core selection, and spectrum allocation system based on crosstalk perception, and is designed to implement the methods described in Embodiments 1 and 2 above, including:
[0085] Initialization Module: In Multi-Fiber Spectrum Flexible Optical Network G s =(L, N, C, F), set the topology information, fiber connection status, network switching node number, fiber link number, fiber core number of each fiber, and each fiber chain The number of spectrum slots of the path, the bandwidth of each spectrum slot, and the maximum crosstalk threshold A of the optical fiber link max .
[0086] Fiber core priority setting module: set the priority of each fiber core in the multi-core optical fiber, and minimize the connection request in adjacent cores with the same bandwidth, which is beneficial to reduce the impact of crosstalk.
[0087] Fiber core classification module: When the connection request arrives, it will classify th...
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Abstract
Description
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Application Information
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