Shared protection routing and spectrum allocation method considering joint fault probability constraints
A technology of shared protection and failure probability, applied in the field of communication, can solve problems such as joint failure probability evaluation of no working path and protection path
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Embodiment 1
[0093] Such as figure 1 As shown, this embodiment considers the shared protection routing and spectrum allocation method with joint failure probability constraints, including:
[0094] Initialize the spectrum flexible optical network G(V, E, F), where V, E, and F respectively represent the set of all optical switching nodes, the set of all optical fiber links, and all the spectrum of each optical fiber link in the spectrum flexible optical network Gap set, that is, V={v 1 ,v 2 ,...,v k ,...,v |V|}, E={e 1 ,e 2 ,...,e k ,...,e |E|}, F={1,2,...,f k ,..., f |F|}; |V|, |E|, |F| represent the number of optical switching nodes, the number of fiber links, and the number of spectrum slots in the spectrum flexible optical network respectively; set the failure probability of each fiber link in the spectrum flexible optical network, where the e k The failure probability of a fiber link is Generate a set of business requests TD, where each business request uses TD(s,d,FS s,d...
Embodiment 2
[0138] Such as figure 2 As shown, this embodiment considers the shared protection routing and spectrum allocation system with joint failure probability constraints, including: a service request generation module, a configuration module for working paths and shared protection paths, a joint failure probability calculation module for shared protection, and a multi-objective optimization function module, a multi-objective optimization function constraint management module, and an objective function optimization solution storage module;
[0139]The service request generation module is used to generate a group of service requests, including source nodes, destination nodes, bandwidth requirements, and maximum tolerable failure probability thresholds of service requests; wherein, each service request uses TD(s, d, FS s,d ,MTFP s,d )∈TD, where s and d represent the source node and destination node of the service request respectively, and s≠d, FS s,d Represents the bandwidth require...
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