Ethernet Interface Partitioning for Multi-Rate Optical Module Reuse
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Solution Overview
Problem
Current Ethernet interface solutions struggle with low utilization of transmission medium performance due to the difficulty in sharing hardware resources and interworking between interfaces with different rates, leading to high redevelopment costs and inefficiencies.
Innovation Solution
The Ethernet interface is divided into two functional parts: one dependent on the medium access control (MAC) rate and another independent of it, allowing for modularization and resource reuse, with the latter including functional units for transcode, scramble, FEC, and PMA/PMD modules, enabling efficient data processing across varying rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a new Ethernet interface rate is designed to be compatible with previous electrical and optical interfaces, then interface compatibility is improved, but transmission medium utilization deteriorates
Solution Approach 1:
The interface is divided into two functional parts: a first functional part implementing processing dependent on MAC rate, and a second functional part implementing processing independent of MAC rate. This segmentation allows different rate-dependent operations to be separated from rate-independent operations, enabling better resource utilization while maintaining compatibility across multiple Ethernet rates.
Solution Approach 2:
The second functional part is designed to be universal and rate-independent, capable of handling multiple Ethernet rates (25G, 50G, 100G, 200G, 400G, etc.). By making this part universal, the system can efficiently utilize the same hardware resources across different interface rates, improving transmission medium utilization while maintaining compatibility.
2Adaptability or versatility
If hardware resources are shared between interfaces with different rates, then resource reuse is improved, but device complexity increases
Solution Approach 1:
By segmenting the interface into rate-dependent and rate-independent functional parts, the patent simplifies resource sharing. The rate-independent second functional part can be shared across multiple rates without complex coordination, while the rate-dependent first functional part handles rate-specific operations. This clear division reduces the complexity of hardware resource sharing.
Solution Approach 2:
The first functional part acts as an intermediary between the MAC layer and the universal second functional part. It translates rate-specific MAC operations into rate-independent operations that can be handled by the shared second functional part, thereby enabling resource reuse while managing complexity through this intermediary layer.
3Productivity
If optical module performance is fully utilized, then transmission efficiency is improved, but interface design complexity increases
Solution Approach 1:
The second functional part is designed as a universal, rate-independent module that can efficiently interface with optical modules across multiple Ethernet rates. This universal design allows full utilization of optical module performance without requiring separate complex designs for each rate, as the same second functional part adapts to different rates through the first functional part.
Solution Approach 2:
The interface design allows dynamic adaptation to different rates by keeping the second functional part static and universal while the first functional part dynamically configures rate-dependent parameters. This dynamic approach enables full optical module performance utilization without redesigning the entire interface for each rate.
Data Source
AI summary
An interface includes a first functional part and a second functional part. The first functional part is configured to implement processing dependent on a medium access control (MAC) rate, and the second functional part is configured to implement processing independent of the MAC rate.