Systems and methods for achieving best effort home route capacity on protection paths during optical restoration
First Claim
1. A method of optical restoration comprising:
- in an optical network with a photonic service operating between two nodes via an associated optical modem at each node, wherein each modem is capable of supporting variable capacity, C1, C2, . . . , CN where C1>
C2>
. . . >
CN, detecting a fault on a home route of the photonic service while the photonic service operates at a home route capacity CH, CH is one of C1, C2, . . . , CN−
1;
downshifting the photonic service to a restoration route capacity CR, CR is one of C2, C3, . . . , CN . . . and CR<
CH;
switching the photonic service from the home route to a restoration route while the photonic service operates at a restoration route capacity CR; and
monitoring the photonic service and copropagating photonic services during operation on the restoration route at the restoration route capacity CR for an upshift of the photonic service; and
responsive to a determination that the photonic service can upshift from the restoration route capacity CR on the restoration route, the determination based at least on margin of the photonic service on the restoration route and based on margin of copropagating photonic services over the restoration route, configuring the associated modem to operate at an upshifted capacity from the restoration route capacity CR.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods of optical restoration include, in an optical network with a photonic service operating between two nodes via an associated optical modem at each node, wherein each modem is capable of supporting variable capacity, C1, C2, . . . , CN where C1>C2> . . . >CN, detecting a fault on a home route of the photonic service while the photonic service operates at a home route capacity CH, CH is one of C1, C2, . . . , CN−1; downshifting the photonic service to a restoration route capacity CR, CR is one of C2, C2 . . . , CN and CR<CH; switching the photonic service from the home route to a restoration route while the photonic service operates at a restoration route capacity CR; and monitoring the photonic service during operation on the restoration route at the restoration route capacity CR for an upshift.
153 Citations
16 Claims
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1. A method of optical restoration comprising:
-
in an optical network with a photonic service operating between two nodes via an associated optical modem at each node, wherein each modem is capable of supporting variable capacity, C1, C2, . . . , CN where C1>
C2>
. . . >
CN, detecting a fault on a home route of the photonic service while the photonic service operates at a home route capacity CH, CH is one of C1, C2, . . . , CN−
1;downshifting the photonic service to a restoration route capacity CR, CR is one of C2, C3, . . . , CN . . . and CR<
CH;switching the photonic service from the home route to a restoration route while the photonic service operates at a restoration route capacity CR; and monitoring the photonic service and copropagating photonic services during operation on the restoration route at the restoration route capacity CR for an upshift of the photonic service; and responsive to a determination that the photonic service can upshift from the restoration route capacity CR on the restoration route, the determination based at least on margin of the photonic service on the restoration route and based on margin of copropagating photonic services over the restoration route, configuring the associated modem to operate at an upshifted capacity from the restoration route capacity CR. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A node in an optical network comprising:
- one or more modems configured to connect to the optical network and to provide a photonic service with a second node in the optical network, wherein each modem is capable of supporting variable capacity, C1, C2, . . . , CN where C1>
C2>
. . . >
CN; anda controller connected to the one or more modems and configured to detect or receive a fault on a home route of the photonic service while the photonic service operates at a home route capacity CH, CH is one of C1, C2, . . . , CN−
1,cause a downshift of the photonic service to a restoration route capacity CR, CR is one of C2, C3, . . . , CN . . . and CR<
CH,cause a switch of the photonic service from the home route to a restoration route while the photonic service operates at a restoration route capacity CR, monitor the photonic service and copropagating photonic services during operation on the restoration route at the restoration route capacity CR for an upshift of the photonic service; responsive to a determination that the photonic service can upshift from the restoration route capacity CR on the restoration route based on margin of the photonic service on the restoration route and on margin of copropagatinq photonic services over the restoration route, configure the associated modem to operate at an upshifted capacity from the restoration route capacity CR. - View Dependent Claims (11, 12, 13, 14, 15)
- one or more modems configured to connect to the optical network and to provide a photonic service with a second node in the optical network, wherein each modem is capable of supporting variable capacity, C1, C2, . . . , CN where C1>
-
16. An optical network comprising:
-
a plurality of nodes; and a plurality of links interconnecting the plurality of nodes in a mesh network, wherein at least one photonic service operates between two nodes via an associated optical modem at each node, wherein each modem is capable of supporting variable capacity, C1, C2, . . . , CN where C1>
C2>
. . . >
CN,wherein, responsive to detection of a fault on a home route of the at least one photonic service while the photonic service operates at a home route capacity CH, CH is one of C1, C2, . . . , CN−
1, the at least one photonic service is downshifted to a restoration route capacity CR, CR is one of C2, C3, . . . , CN . . . and CR<
CH, and the at least one photonic service is switched from the home route to a restoration route while the photonic service operates at a restoration route capacity CR,wherein the at least one photonic service and copropagating photonic services are monitored during operation on the restoration route at the restoration route capacity CR for an upshift of the at least one photonic service, and wherein, responsive to a determination that the photonic service can upshift from the restoration route capacity CR on the restoration route that is based on margin of the photonic service on the restoration route and on margin of copropagating photonic services over the restoration route, the associated modem is configured to operate at an upshifted capacity from the restoration route capacity CR.
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Specification