Ethernet FEC Decoder Switching for Variable Bit Error Conditions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing Ethernet communication systems face challenges in adapting to varying bit error ratios due to environmental interference and human-induced factors, leading to high reception bit error rates that exceed communication requirements, despite the use of concatenated forward error correction codes.
Innovation Solution
A method and apparatus that dynamically adjust the error correction capability of Ethernet data streams by enabling or disabling FEC decoders and interleavers based on real-time transmission information, such as bit error ratio, symbol error ratio, codeword error ratio, and channel state information, to optimize error correction and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If concatenated FEC codes are used to correct bit errors, then error correction capability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic adjustment of the concatenated FEC code structure by enabling or disabling the first FEC decoder and/or second FEC decoder based on real-time reception BER feedback. This allows the system to adapt between full concatenated decoding, single-stage RS decoding, or bypassing FEC decoding entirely, optimizing the balance between error correction capability and device complexity for different channel conditions.
2Reliability
If concatenated FEC codes are used to combat high reception BER, then reliability is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts power consumption by conditionally enabling or disabling FEC decoding stages based on reception BER thresholds. When BER is low, the system bypasses or reduces FEC decoding operations, significantly reducing power consumption. When BER exceeds thresholds, the system activates appropriate decoding stages to ensure reliable communication.
Solution Approach 2:
The patent changes the operational parameters of the FEC decoders by adjusting which decoding stages are active based on BER measurements. This includes switching between different decoding configurations (full concatenated, single-stage RS, or bypass) to optimize the trade-off between error correction performance and power consumption for varying channel conditions.
3Reliability
If FEC decoders are always enabled to ensure error correction, then reliability is improved, but adaptability to varying BER conditions deteriorates
Solution Approach 1:
The system employs feedback mechanisms where the receiver continuously monitors reception BER and uses this information to dynamically adjust the FEC decoding configuration. The BER measurement feeds back to control logic that determines whether to enable full concatenated decoding, single-stage RS decoding, or bypass FEC entirely, allowing the system to adapt to varying channel conditions.
Solution Approach 2:
The patent implements dynamic adaptability by making the FEC decoding configuration changeable based on real-time channel conditions. The system can switch between different operational modes (full concatenated, partial concatenated, or bypass) to optimize performance for the current BER environment, rather than being fixed in a single configuration.
Data Source
AI summary
A method and an apparatus for processing an Ethernet data stream, a computer system, a network system, and a computer-readable storage medium are disclosed. The method is applied to a receiver apparatus including a first forward error correction FEC decoder and a second FEC decoder. The method includes: obtaining transmission information of a first data stream; and if the transmission information meets a trigger condition, adjusting an error correction capability of the receiver apparatus. The data stream can be flexibly and effectively processed by using the method, the apparatus, the computer system, the network system, and the computer-readable storage medium.