Ethernet Packet Slicing for Deterministic Delay Jitter Reduction
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Solution Overview
Problem
The variability in packet lengths in Ethernet networks leads to uncertain processing times, resulting in significant delay and jitter, which existing technologies, including Time-Sensitive Networking (TSN), fail to adequately address due to random packet interruption and reassembly across network devices, causing inefficiencies and increased costs.
Innovation Solution
A packet processing method that slices and encapsulates client packets into fixed-length slices with a tag value, allowing for deterministic scheduling and output, eliminating the need for frequent reassembly and interruption at intermediate nodes, thereby reducing delay jitter and equipment costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If packets of various lengths are transmitted in Ethernet network, then network flexibility and adaptability are improved, but processing time becomes uncertain causing large delay and delay jitter
Solution Approach 1:
The patent segments variable-length packets into fixed-length slices (e.g., 1024 bytes each) at the source node. Each slice is assigned a sequence number and transmitted independently. This segmentation transforms the original problem of variable-length packet processing into fixed-length slice processing, enabling deterministic scheduling and eliminating delay jitter caused by length variability.
2Adaptability or versatility
If random packet interruption and reassembly is performed at intermediate nodes, then network routing flexibility is improved, but processing complexity and equipment costs increase
Solution Approach 1:
The patent performs preliminary actions at the source node by completing the entire packet slicing, numbering, and sequencing process before transmission. Intermediate nodes only need to forward slices based on sequence numbers without performing reassembly or complex processing. This preliminary action eliminates the need for complex intermediate node operations while maintaining routing flexibility.
3Adaptability or versatility
If frequent reassembly and interruption operations are performed across network devices, then packet routing adaptability is improved, but transmission efficiency decreases and costs increase
Solution Approach 1:
The patent extracts the complex reassembly and interruption operations from intermediate nodes and concentrates them only at the source node (for slicing) and sink node (for reassembly). Intermediate nodes perform simple forwarding based on sequence numbers. This extraction eliminates unnecessary repeated operations across multiple devices, significantly improving transmission efficiency while maintaining routing adaptability.
Data Source
AI summary
A packet processing method and related devices are disclosed. The method includes step of slicing and encapsulating a client packet based on a preset slice length, and adding a tag value to each slice, here the tag value is used to identify characteristic information of the client packet in the slice; and then outputting encapsulated slices.