System and method for providing transient resilient transmissions in an optical network

An apparatus communicatively coupled to a plurality of nodes in an optical network, comprising:

• an optical performance engine implemented by at least one processor configured to:
• receive a service request to transmit at least one optical channel from a first node to a second node in the optical network;
• determine, based at least in part upon the service request, a plurality of proposed connection paths to transmit from the first node to the second node a first optical channel of the at least one optical channel and a second optical channel of the at least one optical channel;
• and
• generate, based at least in part upon the service request, a channel risk map indicating a first channel risk level for the first optical channel of the at least one optical channel and a second channel risk level for the second optical channel of the at least one optical channel;
• a transient analysis engine communicatively coupled to the optical performance engine and implemented by the at least one processor configured to:
• receive the channel risk map;
• determine a first transient risk level in a first connection path of the plurality of proposed connection paths and a second transient risk level in a second connection path of the plurality of proposed connection paths, based at least in part upon the channel risk map;
• and
• generate a failure state analysis result based at least in part upon the first transient risk level and the second transient risk level;
• a network performance engine communicatively coupled to the transient analysis engine and implemented by the at least one processor configured to:
• receive the failure state analysis result, a transmission cost rule, and a transmission performance rule;
• determine, based at least in part upon the failure state analysis result, whether at least one path segment in the first connection path contributes to at least one transmission performance risk presented by at least one optical network transient event;
• determine, based at least in part upon the failure state analysis result, whether at least one path segment in the second connection path contributes to at least one transmission performance risk presented by the at least one optical network transient event;
• and
• generate a plurality of transient proofness thresholds based at least in part upon the transmission cost rule, the transmission performance rule, the determination of at least one path segment in the first connection path that contributes to at least one transmission performance risk presented by the at least one optical network transient event, and the determination of at least one path segment in the second connection path that contributes to at least one transmission performance risk presented by the at least one optical network transient event, wherein each transient proofness threshold of the plurality of transient proofness thresholds is associated with a corresponding path segment of the plurality of proposed connection paths;
• and
• a routing and spectrum assignment engine communicatively coupled to the network performance engine and implemented by the at least one processor configured to:
• receive the plurality of transient proofness thresholds and a base provisioning policy that comprises a first base cost for a first plurality of path segments corresponding to the first connection path and a second base cost for a second plurality of path segments corresponding to the second connection path;
• modify, into a modified first base cost, the first base cost by a first transient proofness threshold corresponding to a first path segment in the first connection path;
• modify, into a modified second base cost, the second base cost by a second transient proofness threshold corresponding to a second path segment in the second connection path;
• compare the modified first base cost to the modified second base cost;
• determine a higher one of the modified first base cost and the modified second base cost;
• in response to determining that the modified first base cost is higher than the modified second base cost, select the modified second base cost;
• in response to determining that the modified second base cost is higher than the modified first base cost, select the modified first base cost;
• in response to selecting the modified first base cost, transmit the at least one optical channel from the first node to the second node using the first connection path;
• and
• in response to selecting the modified second base cost, transmit the at least one optical channel from the first node to the second node using the second connection path.

A method, comprising:

• receiving a service request to transmit at least one optical channel from a first node to a second node in an optical network;
• determining, based at least in part upon the service request, a plurality of proposed connection paths to transmit each of a first optical channel and a second optical channel from the first node to the second node;
• generating, based at least in part upon the service request, a channel risk map indicating a first channel risk level for the first optical channel of the at least one optical channel and a second channel risk level for the second optical channel of the at least one optical channel;
• determining a first transient risk level in a first connection path of the plurality of proposed connection paths and a second transient risk level in a second connection path of the plurality of proposed connection paths, based at least in part upon the channel risk map;
• generating a failure state analysis result based at least in part upon the first transient risk level and the second transient risk level;
• receiving a transmission cost rule and a transmission performance rule;
• determining, based at least in part upon the failure state analysis result, whether at least one path segment in the first connection path contributes to at least one transmission performance risk presented by at least one optical network transient event;
• determining, based at least in part upon the failure state analysis result, whether at least one path segment in the second connection path contributes to at least one transmission performance risk presented by the at least one optical network transient event;
• generating a plurality of transient proofness thresholds based at least in part upon the transmission cost rule, the transmission performance rule, the determination of at least one path segment in the first connection path that contributes to at least one transmission performance risk presented by the at least one optical network transient event, and the determination of at least one path segment in the second connection path that contributes to at least one transmission performance risk presented by the at least one optical network transient event, wherein each transient proofness threshold of the plurality of transient proofness thresholds is associated with a corresponding path segment of the plurality of proposed connection paths;
• receiving a base provisioning policy that comprises a first base cost for a first plurality of path segments corresponding to the first connection path and a second base cost for a second plurality of path segments corresponding to the second connection path;
• modifying, into a modified first base cost, the first base cost by a first transient proofness threshold corresponding to a first path segment in the first connection path;
• modifying, into a modified second base cost, the second base cost by a second transient proofness threshold corresponding to a second path segment in the second connection path;
• comparing the modified first base cost to the modified second base cost;
• determining a higher one of the modified first base cost and the modified second base cost;
• in response to determining that the modified first base cost is higher than the modified second base cost, selecting the modified second base cost;
• in response to determining that the modified second base cost is higher than the modified first base cost, selecting the modified first base cost;
• in response to selecting the modified first base cost, transmitting the at least one optical channel from the first node to the second node using the first connection path;
• and
• in response to selecting the modified second base cost, transmitting the at least one optical channel from the first node to the second node using the second connection path.