Survivable ring transmission system with multiple protection classes
AssigneePTS Corporation
InventorsRainer Robert Iraschko, Michael Harold MacGregor, George David Morley, Demetrius Stamatelakis, Ronald A Wahler
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Abstract
A method and system are provided for operating a transmission system having connected nodes. Channels are assigned for carrying traffic along the connections according to a multiple protection classes. Traffic may then be propagated over the connections in accordance with the assigned protection classes.
Claims30
A method for operating a transmission system configured as a ring that uses a defined multiplexing scheme and has a plurality of connected nodes with connections in opposite directions around the ring, the method including:
- assigning channels for carrying traffic along connections between the nodes according to a plurality of protection classes, wherein at least one of the plurality of protection classes comprises a shared protection scheme;
- and
- assigning channels according to the shared protection scheme by:
- selecting M channels c0, (c0+1), . . . , (c0+M−1) out of N available channels and selecting n assignment groupings;
- for a first direction around the ring,
- assigning selected channels for which (c−c0) mod M/n≦M/2n−1 to working traffic;
- and
- assigning selected channels for which (c−c0) mod M/n>M/2n−1 to protection traffic;
- and
- for a second direction around the ring,
- assigning selected channels for which (c−c0) mod M/n>M/2n−1 to working traffic;
- and
- assigning selected channels for which (c−c0) mod M/n≦M/2n−1 to protection traffic.
A ring transmission system comprising:
- a plurality of nodes configured as a ring and connected by connections in opposite directions around the ring;
- a manager coupled with the plurality of nodes, the manager being configured to assign channels for carrying traffic along the connections according to a plurality of protection classes, wherein at least one of the plurality of protection classes comprises a shared protection scheme;
- and
- the manager is configured to assign channels according to the shared protection scheme by:
- selecting M channels c0, (c0+1), . . . , (c0+M−1) out of N available channels and selecting n assignment groupings;
- for a first direction around the ring,
- assigning selected channels for which (c−c0) mod M/n≦M/2n−1 to working traffic;
- and
- assigning selected channels for which (c−c0) mod M/n>M/2n−1 to protection traffic;
- and
- for a second direction around the ring,
- assigning selected channels for which (c−c0) mod M/n>M/2n−1 to working traffic;
- and
- assigning selected channels for which (c−c0) mod M/n≦M/2n−1 to protection traffic.
A system for operating a ring transmission system having a plurality of nodes configured as a ring connected by connections in opposite directions around the ring, the system comprising:
- a manager configured to assign channels for carrying traffic along the connections according to a plurality of protection classes, wherein at least one of the plurality of protection classes comprises a shared protection scheme;
- a controller coupled with the manager and the ring, wherein the controller is configured to propagate signals along traffic paths within the ring in accordance with the assigned channels and protection classes;
- and
- the manager is configured to assign channels according to the shared protection scheme by:
- selecting M channels c0, (c0+1), . . . , (c0+M−1) out of N available channels and selecting n assignment groupings;
- for a first direction around the ring,
- assigning selected channels for which (c−c0) mod M/n≦M/2n−1 to working traffic;
- and
- assigning selected channels for which (c−c0) mod M/n>M/2n−1 to protection traffic;
- and
- for a second direction around the ring,
- assigning selected channels for which (c−c0) mod M/n>M/2n−1 to working traffic;
- and
- assigning selected channels for which (c−c0) mod M/n≦M/2n−1 to protection traffic.
A system for operating a ring transmission system having a plurality of nodes configured as a ring connected by connections in opposite directions around the ring, the system comprising:
- means for assigning channels for carrying traffic along the connections according to a plurality of protection classes, wherein at least one of the plurality of protection classes comprises a shared protection scheme;
- means for propagating signals along traffic paths within the ring in accordance with the assigned channels and protection classes;
- and
- means for assigning channels is configured to assign the channels according to the shared protection scheme by:
- selecting M channels c0, (c0+1), . . . , (c0+M−1) out of N available channels and selecting n assignment groupings;
- for a first direction around the ring,
- assigning selected channels for which (c−c0) mod M/n≦M/2n−1 to working traffic;
- and
- assigning selected channels for which (c−c0) mod M/n>M/2n−1 to protection traffic;
- and
- for a second direction around the ring,
- assigning selected channels for which (c−c0) mod M/n>M/2n−1 to working traffic;
- and
- assigning selected channels for which (c−c0) mod M/n≦M/2n−1 to protection traffic.
Dependencies are inferred from the claim text.