Frame Synchronization Detection for OTN Slot Mapping
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Solution Overview
Problem
Existing frame synchronization detection systems for OTN require multiple parallel control systems for each type of LO-ODU, leading to increased apparatus size and implementation complexity due to the need for discrete mapping and synchronization control.
Innovation Solution
A communication system that includes a frame transmitting unit dividing an upper-layer frame into slots, mapping lower-layer frames with connection information indicating allocated slots, and a frame synchronization detection unit identifying these slots to detect synchronization based on connection information, eliminating the need for multiple parallel control systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple parallel control systems are provided for each type of LO-ODU to perform frame synchronization detection, then frame synchronization can be detected for each LO-ODU type, but the apparatus size and implementation difficulty increase
Solution Approach 1:
The patent applies universality by designing a single frame synchronization detection apparatus that can handle multiple LO-ODU types (LO-ODU0 through LO-ODU3) through configurable parameters rather than requiring separate dedicated control systems for each type. The apparatus uses a unified detection mechanism with adjustable settings to accommodate different LO-ODU specifications, thereby reducing apparatus size while maintaining comprehensive synchronization detection capability across all LO-ODU types.
2Adaptability or versatility
If discrete mapping is used to map different types of LO-ODUs to payload slots, then flexibility in accommodation is improved, but the complexity of synchronization control increases
Solution Approach 1:
The patent applies dynamics by implementing a configurable and adaptable synchronization detection mechanism that can dynamically adjust to different LO-ODU types and their mapping positions. The apparatus uses parameter configuration to adapt to various discrete mapping scenarios rather than requiring fixed dedicated control paths for each mapping configuration, thereby maintaining flexibility while reducing control complexity.
Solution Approach 2:
The patent applies preliminary action by pre-configuring the frame synchronization detection apparatus with appropriate parameters before actual synchronization detection begins. The system is prepared in advance to recognize and handle different LO-ODU types and their mapping positions, eliminating the need for complex real-time decision-making during operation and simplifying the synchronization control process.
Data Source
AI summary
A frame transmitting unit divides a payload area of an upper-layer frame into a plurality of slots, maps a lower-layer frame to one or more of the slots, and transmits the upper-layer frame including connection information that indicates which one or more of the slots the lower-layer frame of a same type is mapped to. The frame synchronization detection unit identifies, as one or more allocated slots, the one or more slots to which the lower-layer frame of the same type is mapped, on the basis of the connection information, and detects the frame synchronization by identifying a frame head signal of the lower-layer frame of the same type that is mapped to the one or more allocated slots.