Multi-port Service Convergence Transfer Device
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Solution Overview
Problem
Current DWDM systems face inefficiencies in bandwidth utilization and high costs due to the inability to transparently transmit low-speed services and the lack of flexibility in converging services with arbitrary speeds, leading to wasted wavelength resources and complex, costly OTU designs.
Innovation Solution
A device and method for multi-port service convergence that includes an uplink transmitting unit with a clock & data recovery module, encapsulation, and mapping, and a downlink unit with de-mapping, decapsulation, and branch clock adjustment, ensuring consistent clock frequencies across branches, allowing for transparent encapsulation and decapsulation, and adaptive clock adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If transparent transmission is used for low-speed services through O/E/O conversion, then service compatibility is improved, but wavelength resource utilization deteriorates and cost increases
Solution Approach 1:
The patent merges multiple low-speed service signals into a single high-speed channel through multiplexing technology. Multiple service signals that would otherwise require separate wavelength resources are combined and transmitted together, improving wavelength resource utilization while maintaining service compatibility through the O/E/O conversion process
Solution Approach 2:
The patent creates a universal transmission system that can handle both standard and non-standard wavelength services through a unified O/E/O conversion architecture. The system provides multi-functionality by accommodating different service types and speeds through a common platform, eliminating the need for separate dedicated systems for each service type
2Productivity
If services with arbitrary speeds are converged to high-speed channel, then bandwidth utilization is improved, but device complexity increases due to speed adapting requirements
Solution Approach 1:
The patent extracts the speed adapting function from the main transmission path and handles it separately through buffer management and timing adjustment mechanisms. By separating the speed adaptation requirement from the core convergence function, the system achieves high bandwidth utilization while reducing the complexity embedded in the main signal path
Solution Approach 2:
The patent performs preliminary buffering and timing adjustment of service signals before they are merged into the high-speed channel. By pre-synchronizing and buffering signals at arbitrary speeds before convergence, the system simplifies the overall device complexity while maintaining high bandwidth utilization through efficient resource allocation
3Adaptability or versatility
If multiple OTU modules are designed for different service convergence types, then service convergence flexibility is improved, but manufacturing cost increases
Solution Approach 1:
The patent designs a universal OTU module that can handle multiple service convergence types through a common architecture. Instead of manufacturing separate specialized modules for different service types, a single multi-functional module design is created that can adapt to various service convergence requirements, thereby reducing manufacturing costs while maintaining flexibility
Solution Approach 2:
The patent implements dynamic configuration capabilities within the OTU module that allow it to adapt its behavior based on the specific service convergence type required. Through dynamic parameter adjustment and reconfigurable signal processing paths, the single module design achieves the flexibility of multiple specialized modules without the associated manufacturing complexity and cost
Data Source
AI summary
The present invention discloses a device and method for implementing multi-port service convergence. The device at least comprises a clock & data recovery module, a encapsulating module, a mapping module, a de-mapping module and a decapsulating module, and further comprises at least one branch clock generating and adjusting module for determining transmitting clock frequency information of decapsulated service data and adjusting local branch clock frequency based on the transmitting clock frequency. In the method according to the present invention, firstly the transmitting clock frequency information of service data is extracted, then the service data is transparently encapsulated, the encapsulated data packets are mapped and transmitted; then the received data packets are de-mapped, the de-mapped data packets are decapsulated; the transmitting clock frequency information of the decapsulated service data is determined, and local branch clock frequency is adjusted according to the transmitting clock frequency; at last branch service data is received in terms of the adjusted local branch clock frequency.