Wavelength regeneration in a network
AssigneeLevel 3 Communications, LLC
InventorsBenjamin K. Peterson, Laurel Clark
Life of this patent
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Abstract
An optical network including a plurality of gateway nodes interconnected with a plurality of intermediate nodes with segments of fiber. The network includes a plurality of devices, such as reconfigurable optical add drop multiplexers, optimally placed at various nodes throughout the network. The device placement is optimized with an integer linear programming analysis considering span definition such that any given span involves some number of segments not exceeding a number of segments that would require wavelength regeneration, cost of placement of a device at a given node, cost of wavelength regeneration, and various parameters and constraints.
Claims19
A system for optimizing a telecommunications network, the system comprising:
- at least one processor;
- and
- memory, operatively connected to the at least one processor and containing instructions that, when executed by the at least one processor, cause the system to:
- access information describing fiber segments in the telecommunications network;
- identify, based on the information, a plurality of spans of the fiber segments in the telecommunications network that can be traversed by a wave without intermediate regeneration;
- generate an optimal placement for at least one regeneration device in the telecommunications network based on at least:
- a constraint requiring that, for at least a particular span of the identified spans, the particular span does not exceed a maximum number of intermediate nodes that are interconnected without intermediate regeneration;
- and
- cause display of the optimal placement for the at least one regeneration device in a graphical user interface, wherein the graphical user interface further comprises at least one span of the plurality of spans, and wherein the at least one span is associated with the display of the optimal placement for the at least one regeneration device.
A method for determining an optimal placement for a regeneration device in a telecommunications network, comprising:
- identifying a set of possible spans of the telecommunications network, wherein each possible span of the set of possible spans:
- can be traversed by a wave without intermediate regeneration;
- and
- comprises a plurality of nodes that are interconnected by one or more fiber segments of the telecommunications network;
- determining, based on the set of possible spans, an optimal placement for a regeneration device in the telecommunications network according to a constraint requiring that, for at least a particular span of the set of possible spans, the particular span does not exceed a maximum number of intermediate nodes that are interconnected without intermediate regeneration;
- and
- generating a user interface comprising a display of the optimal placement for the regeneration device in a graphical user interface, wherein the graphical user interface further comprises at least one span of the plurality of spans, and wherein the at least one span is associated with the display of the optimal placement for the at least one regeneration device.
A method for optimizing a telecommunications network, the method comprising:
- accessing information describing fiber segments in the telecommunications network;
- determining, based on the information, a plurality of spans of the fiber segments in the telecommunications network that can be traversed by a wave without intermediate regeneration;
- generating an optimal placement for at least one regeneration device in the telecommunications network based on at least:
- a constraint requiring that, for at least a particular span of the identified spans, the particular span does not have more than a maximum number of intermediate nodes that are interconnected without intermediate regeneration;
- and
- causing display of the optimal placement for the at least one regeneration device in a graphical user interface, wherein the graphical user interface further comprises at least one span of the plurality of spans, and wherein the at least one span is associated with the display of the optimal placement for the at least one regeneration device.
Dependencies are inferred from the claim text.