Sub-Slicing Frame Mapping for Small-Granularity Service Transport
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Solution Overview
Problem
Existing Ethernet, FlexE, SPN, and MTN standards lack support for small-granularity client services, such as 10 Mb/s or 100 Mb/s, and face limitations in flexibility and compatibility, preventing the hybrid transmission of services with different granularities and compatibility with existing devices.
Innovation Solution
A sub slicing frame (SSF) structure is introduced, comprising an overhead area and payload area, which can carry multiple client services with varying granularities, allowing flexible bandwidth and rigid isolation, and is compatible with existing Ethernet, FlexE, SPN, and MTN systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing Ethernet, FlexE, SPN, and MTN standards are used, then compatibility with existing systems is maintained, but support for small-granularity client services (10 Mb/s or 100 Mb/s) and hybrid transmission of services with different granularities is not achieved
Solution Approach 1:
The transmission channel is segmented into multiple sub slicing frames (SSFs), each capable of carrying service blocks for different client services with varying granularities. This segmentation allows small-granularity services to be allocated specific SSFs or portions of SSFs, enabling support for 10 Mb/s or 100 Mb/s services while maintaining overall system structure.
Solution Approach 2:
The sub slicing frame structure implements dynamic service block mapping where service blocks from multiple client services with different granularities can be flexibly allocated to different SSFs or different portions within the same SSF. This dynamic allocation mechanism enables hybrid transmission of services with different granularities while maintaining compatibility with existing standards through configurable mapping relationships.
2Productivity
If service blocks of multiple client services are mapped into separate structures, then service isolation is achieved, but transmission efficiency and bandwidth utilization are reduced
Solution Approach 1:
Multiple service blocks from different client services are merged into a unified sub slicing frame structure. Each SSF contains service blocks for multiple client services, allowing efficient utilization of transmission bandwidth while maintaining logical isolation through structured organization and mapping relationships between service blocks and their corresponding services.
Solution Approach 2:
The sub slicing frame structure serves multiple functions simultaneously: it carries service blocks for multiple client services with different granularities, provides service isolation through structured organization, enables efficient bandwidth utilization through consolidated transmission, and maintains compatibility with existing standards through configurable mapping. This multi-functional design resolves the contradiction between transmission efficiency and service isolation.
Data Source
AI summary
Provided is a service data processing method. The service data processing method includes: generating, based on service data of a plurality of client services, service blocks of the client services, respectively; mapping the service blocks of the client services into a payload area of at least one sub slicing frame (SSF); and configuring an overhead area field of each SSF to obtain the at least one SSF, wherein each of the SSF carries the service blocks of a plurality of different client services. Further provided are a service data exchange method, a service data extraction method, a provider edge device, a provider exchange device, and a computer-readable medium.