Unlock instant, AI-driven research and patent intelligence for your innovation.
Shared Protection Routing and Spectrum Allocation Method Considering Joint Failure Probability Constraints
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of shared protection and failure probability, applied in the field of communication, can solve problems such as joint failure probability assessment of no working path and protection path
Active Publication Date: 2020-02-18
SUZHOU UNIV
View PDF5 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0006] It can be seen that in the spectrum flexible optical network, although the above two aspects solve the routing and spectrum allocation problems of service requests, they do not evaluate the joint failure probability of the working path and protection path established by the service request.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0094] Such as figure 1 As shown, this embodiment considers the shared protection routing and spectrum allocation method with joint failure probability constraints, including:
[0095] Initialize the spectrum flexible optical network G(V, E, F), where V, E, and F respectively represent all optical switching node sets, all optical fiber link sets, and all spectrums 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 , MTFP s，...
Embodiment 2
[0139] 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;
[0140] 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 requi...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention relates to a shared protection routing and spectrum allocation method and system considering joint failure probability constraints, and is designed to reduce the failure risk of service requests in spectrum flexible optical networks. The method of the present invention includes firstly initializing the spectrum flexible optical network G(V, E, F); secondly, generating a group of service requests; finally, setting the adjustable parameter α and the maximum sharing degree of the spectrum, and sharing based on joint failure probability constraints Multi-objective optimization function for protection routing and spectrum allocation, bandwidth flow conservation constraints, spectrum consistency constraints, spectrum continuity constraints, working path and shared protection path pair selection uniqueness constraints for service requests that meet the multi-objective optimization function , Spectrum slot occupancy uniqueness constraint condition, spectrum sharing constraint condition, spectrum slot maximum sharing degree constraint condition, maximum tolerable failure probability threshold constraint condition, obtain the optimal solution of spectrum resource occupation and joint failure probability.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to a method and system for sharing protection routing and frequency spectrum allocation considering joint failure probability constraints. Background technique [0002] In the spectrum flexible optical network, on the one hand, in order to improve the utilization of optical network resources, make full use of the bandwidth requirements of spectrum resources to carry services, so as to ensure the maximum throughput of the spectrum flexible optical network; on the other hand, in order to ensure the service transmission process In terms of quality of service, each service request needs to be equipped with a transmission working path and a backup protection path to reduce the service interruption caused by the failure of the spectrum flexible optical network. Compared with the protection method of traditional wavelength division multiplexing (WDM) optical network, spectrum flexib...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More