Method and apparatus for designing any-to-any optical signal-to-noise ratio in optical networks
View Patent ↗Optical regeneration is expensive to implement and maintain. A method or corresponding apparatus in an example embodiment of the present invention enables a user to plan an optical regeneration in a network with a reduction of optical regeneration compared to unplanned deployment. An optical regeneration planning tool according to an example embodiment of the present invention can graphically display a representation of a network topology with optical regeneration sites and enable the user to plan optical regenerations at a subset of the sites as a function of characteristics of models of optical network elements and paths within the network topology. Through use of the optical regeneration planning tool, a service provider can save on network deployment and future servicing of optical regeneration equipment.
1. A method for planning deployment of optical network elements comprising:
displaying a model of Optical Signal-to-Noise Ratio (OSNR) margins of optical signals on a path-by-path basis as a function of characteristics of models of optical network elements and paths in a representation of a topology of an optical network;
identifying locations within the topology at which optical regeneration of the optical signal may be planned on a wavelength-by-wavelength basis;
enabling a user to select at least one location at which to plan the optical regeneration;
changing characteristics of the models of optical network elements within the topology based on planned regeneration; and
redisplaying the model of OSNR margins as a function of changed characteristics to consolidate planned regeneration among the optical network elements within the representation of the topology.
2. The method of claim 1 further including updating the model of OSNR margins based on a change in models of the elements in locations selected.
3. The method of claim 1 further including displaying or redisplaying the OSNR margins in a tabular or graphical form.
4. The method of claim 1 further including highlighting OSNR margins below a threshold.
5. The method of claim 1 further including highlighting OSNR margins within different threshold regions with different indicators.
6. The method of claim 1 further including highlighting OSNR margins requiring multiple regenerations within a path of the representation of the topology.
7. The method of claim 1 further including highlighting an optical network element at which regeneration can be planned without adding additional optical network elements.
8. The method of claim 1 further including importing the characteristics of the models of the optical network elements and paths from a database.
9. The method of claim 1 further including calculating the characteristics of the models of the optical network elements and paths from a selectable number of bit rates and applying calculated characteristics of the models of the optical network elements and paths in displaying or re-displaying the model of OSNR margins.
10. The method of claim 1 further including overlaying non-technical factors onto the model of OSNR margins and disabling user selection of regeneration at a subset of locations as a function of the non-technical factors.
11. The method of claim 10 wherein the non-technical factors include at least one of following non-technical factors: cost, expected future traffic pattern, facility space, or contractual obligations.
12. The method of claim 1 wherein the representation of the topology of the optical network includes a ring, a linear, or a mesh topology.
13. An apparatus to plan deployment of optical network elements comprising:
a display module to display a model of Optical Signal to Noise Ratio (OSNR) margins of optical signals on a path-by-path basis as a function of characteristics of models of optical network elements and paths in a representation of a topology of an optical network;
an identification module to identify locations within the topology at which optical regeneration of the optical signal may be planned on a wavelength-by-wavelength basis;
an enablement module to enable a user to select at least one location at which to plan the optical regeneration;
a modification module to change characteristics of the models of optical network elements within the topology based on planned regeneration; and
the display module arranged to redisplay the model of OSNR margins as a function of changed characteristics to consolidate planned regeneration among the optical network elements within the representation of the topology.
14. The apparatus of claim 13 further including an updating module to update the model of OSNR margins based on a change in models of the elements in locations selected.
15. The apparatus of claim 13 wherein the display module is further arranged to display or redisplay the OSNR margins in a tabular or graphical form.
16. The apparatus of claim 13 further including a highlighting module to highlight OSNR margins below a threshold.
17. The apparatus of claim 13 further including a highlighting module to highlight OSNR margins within different threshold regions with different indicators.
18. The apparatus of claim 13 further including a highlighting module to highlight OSNR margins requiring multiple regenerations within a path of the representation of the topology.
19. The apparatus of claim 13 further including a highlighting module to highlight an optical network element at which regeneration can be planned without adding additional optical network elements.
20. The apparatus of claim 13 further including an importing module to import the characteristics of the models of the optical network elements and paths from a database.
21. The apparatus of claim 13 further including a calculation module arranged to calculate the characteristics of the models of the optical network elements and paths from a selectable number of bit rates and apply calculated characteristics of the models of the optical network elements and paths in displaying or re-displaying the model of OSNR margins.
22. The apparatus of claim 13 further including a module arranged to overlay non-technical factors onto the model of OSNR margins and disable user selection of regeneration at a subset of locations as a function of the non-technical factors.
23. The apparatus of claim 22 wherein the non-technical factors include at least one of following non-technical factors: cost, expected future traffic pattern, facility space, or contractual obligations.
24. The apparatus of claim 13 wherein the representation of the topology of the optical network includes a ring, a linear, or a mesh topology.
25. A computer program product comprising a computer readable medium having computer readable code stored thereon, which, when executed by a processor, causes the processor to:
display a model of Optical Signal to Noise Ratio (OSNR) margins of optical signals on a path-by-path basis as a function of characteristics of models of optical network elements and paths in a representation of a topology of an optical network;
identify locations within the topology at which optical regeneration of the optical signal may be planned on a wavelength-by-wavelength basis;
enable a user to select at least one location at which to plan the optical regeneration;
change characteristics of the models of optical network elements within the topology based on planned regeneration; and
redisplay the model of OSNR margins as a function of changed characteristics to consolidate planned regeneration among the optical network elements within the representation of the topology.