Direct OTN Packet Mapping Without Multiplex Hierarchy
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Solution Overview
Problem
The existing optical transmission systems using smart NICs with optical transmission functions face reduced mapping efficiency and processing delays due to the use of multiplex hierarchies in mapping Ethernet frames into OTN frames, leading to increased processor load and communication delays.
Innovation Solution
The optical transmission device directly maps PCIe TLPs into OTN frames without intermediate transmission frames, deleting specific data that does not affect normal transmission, removing padding data, and pre-padding empty spaces, thereby avoiding multiplex hierarchies to enhance mapping efficiency and reduce processing delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiplex hierarchy is used to map Ethernet frames into OTN frames, then transmission compatibility is improved, but mapping efficiency deteriorates and processing delays increase
Solution Approach 1:
The patent extracts and removes the multiplex hierarchy layer from the transmission mapping process. By directly mapping Ethernet frames into OTN frames without intermediate ODU0/ODU1/ODU2 frames, the system eliminates the complex hierarchical structure while maintaining transmission compatibility through direct frame mapping protocols.
Solution Approach 2:
The patent segments the transmission process into direct frame mapping operations, dividing the Ethernet frame data into appropriate segments that fit directly into OTN frame structures. This segmentation approach replaces the traditional hierarchical segmentation with a more efficient direct mapping strategy.
2Adaptability or versatility
If multiplex hierarchy is used to map Ethernet frames into OTN frames, then transmission compatibility is improved, but processing speed deteriorates
Solution Approach 1:
The patent extracts and eliminates the intermediate processing stages of the multiplex hierarchy (ODU0/ODU1/ODU2 frame conversions). By removing these intermediate layers, the system achieves direct mapping from Ethernet frames to OTN frames, significantly reducing the number of processing steps and improving overall processing speed.
Solution Approach 2:
The patent performs preliminary frame structure preparation and data segmentation before the actual mapping operation. By pre-processing the Ethernet frames into OTN-compatible formats in advance, the system reduces the complexity of the actual mapping operation, thereby improving processing speed.
3Stability of the object's composition
If padding data is included in packet mapping, then data alignment is improved, but mapping efficiency deteriorates
Solution Approach 1:
The patent discards unnecessary padding data that does not contribute to actual information transmission. By removing redundant padding bytes and using compact data representation, the system maintains proper data alignment while improving mapping efficiency by reducing the total data volume that needs to be processed.
Solution Approach 2:
The patent changes the data structure parameters by adjusting the packing density and alignment requirements. Instead of using fixed padding schemes, the system dynamically optimizes data arrangement parameters to achieve both proper alignment and maximum mapping efficiency.
Data Source
AI summary
An optical transmission device includes a first processing circuit that deletes, from a plurality of packets, a specific data which does not affect normal transmission and reception of an optical signal obtained by converting a first transmission frame before mapping the plurality of packets into the first transmission frame, a second processing circuit that maps the plurality of packets into the first transmission frame without using a multiplex hierarchy after removing a padding data stored between the plurality of packets and pre-padding an empty data area by a removal of the padding data with the plurality of packets in order, and a third processing circuit that converts the first transmission frame in which the plurality of packets are mapped into the optical signal and transmits the optical signal.