DSP Optical Transceiver M:N Recovery with Adjustable Parameters
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Solution Overview
Problem
Optical networks utilizing DSP-enabled transceivers/transponders face challenges in efficiently managing failures and maintaining communication quality due to differences in transmission parameters among working paths, leading to inadequate protection and restoration mechanisms.
Innovation Solution
An M:N recovery scheme is implemented, where a set of N working DSP-enabled optical transceivers/transponders with different transmission parameters are protected by a set of M protection DSP-enabled transceivers/transponders, each with adjustable parameters, allowing for flexible protection and association modes to manage failures and parameter changes across the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional protection mechanisms are used in optical networks with DSP-enabled transceivers, then device simplicity is maintained, but the ability to handle parameter differences and ensure reliable communication deteriorates
Solution Approach 1:
The protection transceiver implements dynamic parameter adjustment capabilities, allowing it to adapt its transmission parameters (modulation format, symbol rate, FEC overhead) to match the working transceiver's parameters. This dynamic adaptability enables reliable communication despite parameter differences between working and protection transceivers, while maintaining a unified device architecture that avoids excessive complexity.
Solution Approach 2:
The system changes transmission parameters (modulation format, symbol rate, FEC overhead) of the protection transceiver to match those of the working transceiver. This parameter adaptation allows the protection mechanism to handle diverse transceiver configurations reliably without requiring complex dedicated protection paths for each parameter combination.
2Reliability
If separate protection mechanisms are implemented for each transmission parameter configuration, then communication reliability is improved, but device complexity and resource consumption increase
Solution Approach 1:
The protection transceiver is designed with universal parameter adjustment capabilities, enabling a single device to handle multiple transmission parameter configurations (different modulation formats, symbol rates, FEC overheads). This multi-functionality allows one protection transceiver to replace what would otherwise require multiple specialized protection transceivers, reducing overall system complexity while maintaining comprehensive protection coverage.
Solution Approach 2:
The protection transceiver dynamically adjusts its parameters to match any working transceiver configuration, rather than requiring static dedicated protection paths for each configuration. This dynamic adaptability provides comprehensive protection coverage across all parameter combinations using a unified, less complex protection mechanism.
3Adaptability or versatility
If fixed parameter protection transceivers are used, then device complexity is reduced, but adaptability to different working transceiver parameters deteriorates
Solution Approach 1:
The protection transceiver incorporates dynamic parameter adjustment capabilities through its DSP processor, allowing it to adapt to different working transceiver configurations in real-time. This dynamic flexibility provides high adaptability without requiring multiple fixed-configured protection transceivers, as a single adaptable transceiver can serve multiple working transceiver types.
Solution Approach 2:
The system enables parameter changes in the protection transceiver (modulation format, symbol rate, FEC overhead) to match the working transceiver's parameters. This parameter flexibility achieves high adaptability to different working transceiver configurations while using a unified transceiver design, avoiding the need for complex diverse protection mechanisms.
4Reliability
If M:N recovery scheme with adjustable parameters is implemented, then network resilience is improved, but control and management complexity increases
Solution Approach 1:
The protection transceiver implements self-configuration capabilities through its DSP processor, automatically adjusting its parameters to match the working transceiver without requiring manual configuration. This self-service approach enhances network resilience through the M:N recovery scheme while reducing management complexity, as the system configures itself rather than requiring operator intervention for each parameter adjustment.
Solution Approach 2:
The system uses feedback mechanisms where the protection transceiver monitors the working transceiver's parameters and automatically adjusts its own parameters to match. This feedback-driven automatic configuration enhances network resilience through flexible M:N protection while simplifying management, as the system self-regulates based on real-time parameter monitoring rather than requiring complex manual control.
Data Source
AI summary
Apparatus for enabling an M:N recovery scheme in an optical network includes a set of N working DSP-enabled optical transceivers/transponders including at least one working DSP-enabled optical transceiver/transponder that uses a first set of transmission parameters and at least one working DSP-enabled optical transceiver/transponder that uses a second set of transmission parameters which is different from the first set of transmission parameters, and a set of M protection DSP-enabled optical transceivers/transponders operable to protect the set of N working DSP-enabled optical transceivers/transponders and including L protection DSP-enabled optical transceivers/transponders, each having a capability of using a set of adjustable transmission parameters enabling it to protect every one of the N working DSP-enabled optical transceivers/transponders, and, when M>L, M-L protection DSP-enabled optical transceivers/transponders, each having a capability of protecting at least one, but not all, of the N working DSP-enabled optical transceivers/transponders. Related network and methods are also disclosed.