Multi-mode DWDM Switching Traffic Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current switching technologies in DWDM networks, such as electronic packet switching, optical circuit switching, and optical burst switching, face challenges in scaling cost-effectively with the number of DWDM channels and cannot meet the diverse needs of heterogeneous applications, particularly in terms of fine packet-level granularity and latency sensitivity.
Innovation Solution
A multi-mode switching approach that enables dynamic packet traffic management in DWDM networks by using a traffic management module to process data for transmission in electronic packet switching (EPS), optical burst switching (OBS), and optical circuit switching (OCS) modes, allowing each wavelength to be configured individually for optimal switching based on application requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If electronic packet switching is used to provide fine packet-level granularity, then packet-level control and latency sensitivity are improved, but system cost increases significantly due to required O/E/O conversion for each DWDM channel
Solution Approach 1:
The patent segments the switching function into two parts: electronic packet processing for control headers and optical switching for data payloads. This segmentation allows packet-level granularity to be achieved for control purposes while avoiding expensive O/E/O conversion for the actual data transmission, thus resolving the contradiction between fine granularity and system cost.
Solution Approach 2:
The patent introduces an intermediary approach where electronic processing is used only for packet header analysis and control decisions, while the bulk data transmission occurs in the optical domain. This intermediary electronic-optical hybrid approach provides packet-level control without requiring full electronic conversion of all data, reducing system cost while maintaining fine granularity.
2Device complexity
If optical circuit switching is used to reduce system cost, then cost-effectiveness is improved, but adaptability to diverse applications and dynamic traffic management deteriorates due to coarse wavelength-level granularity
Solution Approach 1:
The patent makes the switching system dynamic by allowing the switching mode to be configured per-wavelength and reconfigured in real-time based on traffic requirements. Each wavelength can be dynamically assigned to EPS, OPS, or OBS mode, enabling the system to adapt to diverse applications while maintaining cost-effectiveness through optical switching.
Solution Approach 2:
The patent creates a universal switching platform that can handle multiple switching modes (EPS, OPS, OBS) within a single optical switching fabric. This multi-functionality allows the system to support diverse applications with different requirements while using a unified cost-effective optical switching infrastructure, resolving the contradiction between cost and adaptability.
3Quantity of substance
If the number of DWDM channels is increased to scale network capacity, then network bandwidth is improved, but the number of required electronic switching ports increases proportionally, increasing system cost
Solution Approach 1:
The patent replaces the mechanical electronic switching system with an optical switching system for the core DWDM channels. By substituting electronic switching with optical switching, the system can scale to hundreds of DWDM channels without proportionally increasing the number of electronic switching ports, as optical switches handle the bulk of channel routing electronically-free.
Data Source
AI summary
A Wavelength Division Multiplexing (WDM) multi-mode switching system and method and method provides concurrent switching 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 in the WDM multi-mode switching systems may provide a traffic management module that processes incoming data and routes the data for transmission in an electronic packet switching (EPS), optical burst switching (OBS), or optical circuit switching (OCS) modes via a WDM link.