DWDM Multi-Mode Switching for Dynamic Channel Reconfiguration
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Solution Overview
Problem
Current switching technologies, such as electronic packet switching and optical switching, face challenges in cost-effectively scaling with the number of DWDM channels while meeting the diverse needs of heterogeneous applications, as they either incur high costs due to O/E/O conversion or lack packet-level switching capabilities.
Innovation Solution
The implementation of DWDM multi-mode switching systems and methods that allow concurrent and dynamic reconfiguration of DWDM channels between electronic packet switching, optical circuit switching, and optical burst switching modes on a unified router platform, enabling each channel to be individually reconfigured based on traffic demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic packet switching is used to support a large number of DWDM channels, then packet-level switching capability is achieved, but system cost increases significantly due to required O/E/O conversion pairs
Solution Approach 1:
The patent segments DWDM channels into different categories based on their switching requirements. Some channels are assigned to electronic packet switching for packet-level granularity, while other channels are assigned to optical switching for cost-effective transmission. This segmentation allows the system to achieve packet-level switching capability only where necessary, rather than requiring O/E/O conversion for all channels.
Solution Approach 2:
The patent applies different switching qualities to different parts of the system. Electronic packet switching with full O/E/O conversion is applied locally to specific channels that require packet-level control, while optical switching is applied to other channels where lower granularity is acceptable. This local quality approach optimizes the balance between switching capability and system cost.
2Device complexity
If optical switching is used to reduce system cost by minimizing O/E/O conversion, then cost-effectiveness improves, but packet-level switching capability is lost
Solution Approach 1:
The patent segments the optical switching functionality into hybrid optical-electronic switching units that can perform packet-level switching in the optical domain without requiring full O/E/O conversion for all channels. This allows cost-effective optical switching to be combined with packet-level switching capability where needed.
Solution Approach 2:
The patent creates a multi-functional switching system where optical switching units can operate in multiple modes: pure optical switching for cost-effective channels and hybrid optical-electronic switching for channels requiring packet-level granularity. This universality allows the same infrastructure to serve both cost-sensitive and performance-sensitive applications.
3Ease of operation
If a single switching technology is used to simplify system architecture, then ease of operation improves, but the ability to meet diverse application requirements deteriorates
Solution Approach 1:
The patent implements a universal DWDM switching platform that can operate in multiple switching modes (electronic packet switching, optical circuit switching, optical burst switching) within the same architecture. The system can dynamically assign different switching technologies to different channels based on application requirements, providing both simplicity and versatility.
Solution Approach 2:
The patent introduces dynamic reconfiguration capability that allows the switching technology assigned to each channel to be changed based on varying application requirements. This dynamic approach enables the system to adapt to diverse applications while maintaining a unified architecture, rather than requiring separate fixed systems for each application type.
4Adaptability or versatility
If separate networks are built for different applications to meet specific requirements, then application-specific performance improves, but capital investment and management complexity increase
Solution Approach 1:
The patent merges multiple switching technologies (electronic packet switching, optical circuit switching, optical burst switching) into a single unified DWDM switching platform. This consolidation allows different application types to share the same physical infrastructure while receiving application-specific switching services, thereby reducing capital investment and management complexity compared to building separate networks.
Solution Approach 2:
The unified switching platform provides universal support for multiple switching modes, allowing a single network infrastructure to serve diverse applications with different performance requirements. This multi-functionality eliminates the need for separate specialized networks while maintaining application-specific optimization.
Data Source
AI summary
A Wavelength Division Multiplexing (WDM) multi-mode switching system and method and method provides concurrent switching in various switching modes. For example, WDM links may communicate data in various switching modes including, but not limited to, an electronic packet switching (EPS) mode, optical circuit switching (OCS) mode, and optical burst switching (OBS) mode. Edge routers and core routers in the WDM multi-mode switching systems and methods provide switching and processing necessary to handle data provided in the various switching modes. Further, the WDM multi-mode switching systems and methods can also provide dynamic reconfiguration between the various switching modes.