Subframe Misordering Detection in Optical Inverse Multiplexing
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Solution Overview
Problem
Current optical transmission technologies face challenges in detecting subframe misordering during inverse multiplexing, which prevents receiving nodes from assembling complete frames, leading to inefficiencies in frequency spectrum utilization and bandwidth management.
Innovation Solution
A method and node for detecting subframe misordering by comparing trail trace identifiers and subframe number values across received subframes with configured desired values, using a receiving unit and judging units to determine if subframes belong to the correct OTUC or ODUC groups, and generating alarms for misordering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If inverse multiplexing is used to distribute ODUH across non-contiguous Network Media Channels, then frequency spectrum utilization is improved, but subframe misordering occurs making frame assembly impossible
Solution Approach 1:
The patent applies preliminary action by inserting detection information (trail trace identifiers and subframe number values) into subframes before transmission. The receiving node uses these pre-inserted identifiers to detect misordering and trigger reordering operations, enabling reliable frame assembly despite inverse multiplexing across non-contiguous channels
Solution Approach 2:
The patent implements feedback by having the receiving node continuously monitor trail trace identifiers and subframe number values in received subframes. When misordering is detected through mismatched identifiers, the system generates alarms and triggers reordering operations, creating a closed-loop feedback mechanism that maintains frame assembly capability
2Measurement precision
If subframe misordering detection is implemented by comparing trail trace identifiers and subframe number values, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies copying by creating simplified copies of identification information (trail trace identifiers and subframe number values) that are inserted into each subframe. These copied identifiers enable detection without requiring complex analysis of the entire subframe content, reducing detection mechanism complexity while maintaining high detection accuracy
Solution Approach 2:
The patent uses parameter changes by monitoring specific parameters (trail trace identifier values and subframe number value ranges) rather than analyzing overall subframe characteristics. This parameter-based approach simplifies the detection mechanism while achieving high detection accuracy through direct comparison of key identifiers
Data Source
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AI summary
Disclosed are a method and a node for detecting subframe misordering, including that: a receiving node receives subframes from a transmitting node, and judges whether a trail trace identifier carried in each subframe received is same with a desired trail trace identifier of a subframe to be received; when the trail trace identifier carried in each subframe received is same with the desired trail trace identifier of the subframe to be received, judges whether a subframe number value carried in each subframe belongs to a range of desired subframe number values of the subframe to be received, and if it has been judged that the subframe number value carried in the received subframe does not belong to the range of desired subframe number values of the subframe to be received, determines that there is subframe misordering.