Methods of protection sharing for multi-protected optical demands in large-scale wdm mesh networks
AssigneeAlcatel Lucent
InventorsAhmet A Akyamac, Gary W. Atkinson, Ramesh Nagarajan
Life of this patent
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Abstract
A method and system for identifying and, optionally, managing protection resource sharing opportunities, such as within a large-scale wavelength-division multiplexing (WDM) mesh network.
Claims24
A method for distributing protection capacity within a mesh network, comprising:
- identifying primary and protection capacity associated with each of a plurality of protected light paths within the mesh network;
- determining, for each of a plurality of k-element failures, a corresponding protection capacity for recovering from the k-element failure;
- determining protection capacity sharing opportunities according to each of a plurality of protection sharing mechanisms;
- and
- adapting protection capacity allocations in response to the determined protection sharing opportunities.
A computer program product wherein computer instructions, when processed by a computer, adapt the operation of the computer to perform a method for identifying protection capacity sharing opportunities for a mesh network topology, comprising:
- iteratively determining, for each lightpath d within a set D of up to k-protected lightpaths, a total backup link capacity by processing each of a plurality of failure types for each lightpath d within the set D of up to k-protected lightpaths, wherein link capacity associated with each failed lightpath d within the set D of up to k-protected lightpaths is released to an available capacity pool;
- and
- storing data indicative of an overall backup capacity C.
A network management system (NMS) including a computer for executing instructions which adapt the operation of the computer to perform a method for identifying protection capacity sharing opportunities in a mesh network, the method comprising:
- determining, for each lightpath d within a set D of protected lightpaths, a total backup link capacity by processing each of a plurality of failure types for each lightpath d within the set D of up to k-protected lightpaths, wherein link capacity associated with each failed lightpath d within the set D of up to k-protected lightpaths is released to an available capacity pool;
- and
- storing data indicative of an overall backup capacity C.
A network management system (NMS) including a computer for executing instructions which adapt the operation of the computer to perform a method for distributing protection capacity within a mesh network, the method comprising:
- identifying primary and protection capacity associated with each of a plurality of protected light paths within the mesh network;
- determining, for each possible k-element failure, a corresponding protection capacity for recovering from the k-element failure;
- determining protection capacity sharing opportunities according to each of a plurality of protection sharing mechanisms;
- and
- adapting protection capacity allocations in response to the determined protection sharing opportunities.
Dependencies are inferred from the claim text.