Optical Link Inner-Code Switching for Latency and FEC Tradeoffs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current inner-code processing solutions for optical communication systems are not applicable to a variety of application scenarios due to differing delay requirements and error correction needs in short-distance and long-distance scenarios.
Innovation Solution
A data transmission method that employs multiple inner-code processing modes with different processing manners, allowing selection based on scenario requirements, and uses mode indications in a pad sequence to adapt to varying conditions without additional resource usage or changing transmission baud rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single inner-code processing solution is used, then the system structure is simple, but it cannot adapt to multiple application scenarios with different delay and error correction requirements
Solution Approach 1:
The patent implements dynamic inner-code processing mode selection where the system can switch between different processing modes (e.g., mode 1 with full error correction for long-distance scenarios, mode 2 with reduced processing for short-distance scenarios) based on real-time link quality assessment and application requirements, enabling a single system to adapt to multiple scenarios without requiring separate dedicated systems for each use case
2Adaptability or versatility
If multiple inner-code processing modes are implemented, then adaptability to different scenarios is improved, but the system complexity increases
Solution Approach 1:
The patent segments the inner-code processing into distinct, identifiable modes (e.g., first inner-code processing mode and second inner-code processing mode) with different error correction capabilities and processing complexities. Each mode is independently configured and can be selected based on scenario requirements, allowing the system to manage multiple processing approaches through structured organization rather than a monolithic complex system
Solution Approach 2:
The patent changes key processing parameters such as forward error correction (FEC) encoding strength, interleaving depth, and processing delay characteristics to transition between different inner-code processing modes. By adjusting these parameters rather than implementing completely different processing architectures, the system achieves scenario adaptability while controlling overall complexity through parameter-based configuration
3Reliability
If inner-code processing is performed with high error correction capability, then transmission reliability is improved, but processing delay increases
Solution Approach 1:
The patent dynamically adjusts the balance between error correction capability and processing delay by selecting appropriate inner-code processing modes based on real-time link quality assessment. For long-distance transmissions with poor link conditions, the system selects modes with stronger FEC encoding and deeper interleaving that prioritize reliability. For short-distance transmissions with good link conditions, the system selects modes with reduced processing that prioritize low latency, thereby optimizing the reliability-delay tradeoff for each specific scenario
Data Source
AI summary
A data transmission method, an apparatus, and a system are provided. An optical device of a transmitter may select one inner-code processing mode from a plurality of inner-code processing modes based on a requirement, and indicate the inner-code processing mode to an optical module of a receiver. The selected inner-code processing mode may be indicated to the receiver by using a PAD sequence, without requiring an additional resource and without changing a baud rate of a data stream. The optical device of the receiver may also detect quality of a current link, to select an inner-code processing mode that matches the quality, and feed back the inner-code processing mode to the transmitter, so that the transmitter can switch the inner-code processing mode based on an indication.