FlexE Service Flow Rate Adaptation via Time Slot Segmentation
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Solution Overview
Problem
The FlexE protocol primarily defined for 100G physical layers lacks a specific method for service transmission between members with different rates, such as 25G, 50G, and 100G, limiting interoperability and efficient bandwidth utilization.
Innovation Solution
A method involving mapping client services to service flows of different rates, dividing these flows into sub-flows, and filling them with overhead blocks for transmission over corresponding channels, allowing for seamless service transmission between members with varying rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the FlexE protocol defines service transmission methods for 100G physical layers only, then the protocol implementation is simple and standardized, but the adaptability to different rates (25G, 50G, 100G) is limited
Solution Approach 1:
The patent segments the 100G service flow into multiple lower-rate sub-flows (25G or 50G) by dividing the time slots. The 100G service flow containing 20 time slots is split into sub-flows with fewer time slots each, enabling transmission over lower-rate physical layers while maintaining the original service rate through concatenation at the receiving end
Solution Approach 2:
The patent creates a universal service transmission method that works across multiple physical layer rates (25G, 50G, 100G) by defining a rate-agnostic framework. The same FlexE protocol can handle different rates by dynamically configuring the number of time slots allocated to each service flow, making the protocol multi-functional across different physical layer specifications
2Productivity
If 400G service is transmitted using four bundled 100G optical modules, then the transmission requirement is met without increasing cost, but the bandwidth utilization efficiency decreases due to overhead blocks
Solution Approach 1:
The patent merges multiple lower-rate service flows (25G or 50G) into a single aggregated service flow that utilizes the full 100G capacity. By combining multiple sub-flows transmitted over separate physical layers into one logical service flow, the system achieves efficient bandwidth utilization and reduces the relative overhead waste through consolidated transmission
Data Source
AI summary
Provided are a service transmitting method and device, and a service receiving method and device. The service transmitting method comprises steps of: mapping a client service to at least one service flow of a first rate; dividing at least one service flow of the first rate into a plurality of service flows of other rates, and filling the service flows of other rates with overhead blocks; and transmitting the service flows through channels of corresponding rates. By means of the scheme according to the embodiment, a service transmission between members of different rates can be implemented.