FlexE Slot Group Sequence Embedding for Fast Link Establishment
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Solution Overview
Problem
In flexible Ethernet (FlexE) technology, the time required to learn the sequence relationship between slots is lengthy, leading to increased time intervals and delays in data restoration, which hinders fast link establishment and dynamic rate switching.
Innovation Solution
The sequence information of subslots is embedded directly within the slot group instead of being transmitted in an overhead frame, allowing the receiving end to quickly learn the sequence relationship and reduce restoration time by transmitting it transparently in both FlexE and non-FlexE synchronous switching networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If sequence information is placed in the overhead frame, then the overhead frame structure is maintained, but the time to learn sequence relationship increases and data restoration is delayed
Solution Approach 1:
The patent extracts the sequence information from the overhead frame and embeds it directly into the slot group structure. Specifically, the sequence information is placed in the first code block of the slot group, separating it from the overhead frame transmission. This extraction eliminates the delay caused by waiting for overhead frame transmission while maintaining the necessary sequencing functionality.
Solution Approach 2:
The sequence information is transmitted in advance as part of the slot group structure itself, rather than being delivered later through the overhead frame. By embedding the sequence information directly in the slot group's first code block, the receiving device can immediately learn the sequence relationship without waiting for subsequent overhead frame transmissions.
2Productivity
If overhead frame is transmitted before slot group, then sequence information is delivered, but the transmission cycle creates long time intervals
Solution Approach 1:
The patent merges the sequence information transmission with the slot group transmission by embedding it in the first code block of the slot group. This combination eliminates the separate overhead frame transmission step, allowing the receiving device to obtain sequence information simultaneously with the slot group data, thereby reducing the transmission cycle time and improving data restoration speed.
3Loss of time
If sequence information is embedded in slot group, then data restoration time is reduced, but slot structure complexity increases
Solution Approach 1:
The patent applies local quality by embedding sequence information only in the first code block of the slot group, rather than distributing it throughout the entire structure. This localized approach minimizes the impact on slot structure complexity while ensuring that the sequence information is available immediately for data restoration processes.
Data Source
AI summary
A cell reselection method includes generating, by a radio access network device, cell reselection information, wherein the cell reselection information includes an identifier of at least one carrier frequency and an identifier of a network slice supported by each of the at least one carrier frequency. The cell reselection method further includes sending, by the radio access network device, the cell reselection information to a terminal device, wherein the cell reselection information is useable by the terminal device for cell reselection.