Transport Apparatus Signal Processing Unit Segmentation
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Solution Overview
Problem
Current transport apparatuses lack the functionality to branch or merge signals and process multiple client signals across multiple signal processing units, limiting their ability to transfer multiple client signals as multiple line signals of different systems.
Innovation Solution
A transport apparatus is designed with a client signal transceiving unit, a mapping unit, a transmission-side rate conversion unit, a line signal transceiving unit, a reception-side rate conversion unit, and a demapping unit to convert and transfer client signals between different transport frames and line signals, enabling the processing and transmission of multiple client signals across multiple signal processing units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transport apparatus processes one client signal through one signal processing unit, then the device complexity is low, but the adaptability to handle multiple client signals of different systems is insufficient
Solution Approach 1:
The transport apparatus is divided into multiple independent signal processing units (first signal processing unit and second signal processing unit), each capable of processing different client signals separately. This segmentation allows the system to handle multiple client signals of different systems simultaneously while maintaining manageable complexity through modular architecture.
Solution Approach 2:
Each signal processing unit is designed with multi-functionality to handle various client signal types and formats. The units can process different protocols and signal characteristics, making the overall system adaptable to diverse client signals without requiring dedicated processing paths for each signal type.
2Reliability
If the transport apparatus uses dedicated processing paths for each client signal, then the processing reliability is high, but the device complexity increases
Solution Approach 1:
The system implements dedicated processing paths through segmented signal processing units, where each unit has its own complete signal processing chain (mapping unit, rate conversion unit, etc.). This segmentation ensures that processing failures in one unit do not affect other units, maintaining high reliability while avoiding the complexity of a single monolithic processing path.
Solution Approach 2:
Each signal processing unit is configured with locally optimized processing capabilities tailored to specific signal requirements. The mapping units and rate conversion units in each processing path are configured according to the specific characteristics of the client signals they handle, ensuring optimal processing reliability for each signal type without requiring uniform complex configuration across the entire system.
3Adaptability or versatility
If the transport apparatus handles multiple client signals with different bit rates, then the adaptability improves, but the manufacturing precision requirements increase
Solution Approach 1:
Rate conversion units are introduced as intermediary components between the mapping units and the optical transceivers. These intermediary units perform precise bit rate adaptation, converting client signals of various bit rates to the required transmission rates. The rate conversion process includes synchronization and timing adjustment mechanisms that maintain high manufacturing precision even when handling diverse bit rates.
Solution Approach 2:
The system dynamically adjusts processing parameters in the rate conversion units based on the input client signal characteristics. By changing parameters such as sampling rates, clock frequencies, and conversion ratios according to the specific bit rate requirements, the system maintains high precision rate conversion while adapting to different client signal specifications.
Data Source
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AI summary
A transport apparatus includes: a client signal transceiving unit which transceives a client signal; a line signal transceiving unit which performs electric-optic conversion on a line signal to be transmitted, transmits an optical line signal, performs optic-electric conversion on a received line signal, and outputs an electrical line signal; and a plurality of signal processing units which perform signal processing on the client signal to generate the line signal to be transmitted and perform signal processing on the electrical line signal to generate the client signal. Each of the plurality of signal processing units includes a signal transceiving unit which performs transfer of a branched signal obtained by branching a signal to be transmitted and a merged signal obtained by merging received signals with another signal processing unit, and the signal transceiving unit of each of the plurality of signal processing units and the signal transceiving unit of the other signal processing unit are coupled via an inter-chip wiring.