FlexE Bearer Frame Structure for Low-Rate Service Mapping
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Solution Overview
Problem
The FlexE protocol's 5 Gbit/s slot granularity is too large for low-rate services like E1 (2.048 Mbit/s) and T1 (1.544 Mbit/s) services, leading to significant bandwidth waste and inefficient transmission.
Innovation Solution
A service processing method and device that refine the slot pipeline by defining a frame structure with an S block, D blocks, and a T block, optimizing the payload area to carry overhead information and service data, and adjusting the frame structure based on a bearer efficiency threshold to improve transmission efficiency for low-rate services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If FlexE protocol uses 5 Gbit/s slot granularity, then bandwidth allocation is simplified, but bandwidth waste increases for low-rate services
Solution Approach 1:
The patent segments each 5 Gbit/s FlexE slot into 480 sub-slots, where each sub-slot carries 10.1 Mbit/s of bandwidth. This segmentation allows low-rate services like E1 (2.048 Mbit/s) and T1 (1.544 Mbit/s) to be mapped onto appropriate numbers of sub-slots, thereby reducing bandwidth waste while maintaining the simplicity of the original slot structure.
2Adaptability or versatility
If 10 Mbit/s sub-slots are used to carry E1/T1 services, then service compatibility is improved, but bandwidth utilization deteriorates
Solution Approach 1:
The patent applies local quality by allowing different portions of the slot pipeline to serve different purposes: some sub-slots are dedicated to carrying E1/T1 services with optimized frame structures, while other sub-slots can be used for higher-rate services or left as spare capacity. This localized optimization ensures that each service type receives appropriate bandwidth allocation without affecting the overall system's versatility.
Data Source
AI summary
A service processing method and a service processing device are disclosed. The service processing method may include: determining overhead information and determining a payload area for carrying the overhead information and service data in a bearer frame when a low-rate client service is borne in a communication network; and mapping the overhead information and the service data to the payload area.