SRv6 Connection-Oriented Path Setup With Reduced Header Overhead
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Solution Overview
Problem
The SRv6 network faces challenges in supporting connection-oriented paths due to large packet headers when strict explicit paths are required, leading to decreased processing efficiency and increased delay, which is unsuitable for applications like Time-Sensitive Networks and Deterministic Networks.
Innovation Solution
Introduce new SRv6 SIDs (End.Copc and End.Xcopd) to establish connection-oriented paths by advertising network node SIDs through IGP, using ping-type messages to set up mapping relations, and reduce header size by encapsulating only necessary SIDs in data packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If path selection is based on signal strength alone, then connection establishment is simple, but connection reliability deteriorates in complex electromagnetic environments
Solution Approach 1:
The patent changes the selection parameter from single-dimensional signal strength to multi-dimensional quality metrics including signal strength, interference level, and channel occupancy rate. This allows the system to select paths based on comprehensive quality assessment rather than simple signal strength, improving connection reliability while maintaining automated operation.
Solution Approach 2:
The patent introduces a path selection manager as an intermediary component that coordinates between the wireless communication module and the electromagnetic environment. This manager implements the multi-parameter evaluation algorithm and makes intelligent path selection decisions, resolving the contradiction between simple operation and reliable connection.
2Reliability
If multiple path parameters are monitored, then connection reliability is improved, but system complexity increases
Solution Approach 1:
The path selection manager serves multiple functions: it monitors signal strength, measures interference levels, calculates channel occupancy rates, evaluates path quality, and controls path switching. By consolidating these diverse functions into a single multi-functional module, the system achieves improved connection reliability without proportionally increasing overall system complexity.
Solution Approach 2:
The system performs preliminary evaluation of multiple transmission paths before actual data transmission begins. By pre-calculating path qualities and establishing a path selection strategy in advance, the system avoids complex real-time decisions during data transmission, thereby improving reliability while managing complexity.
3Reliability
If path switching is performed frequently, then connection stability is improved, but data transmission efficiency deteriorates due to overhead
Solution Approach 1:
The patent implements partial path switching by evaluating multiple path parameters simultaneously and switching only when the quality difference between paths exceeds a threshold. This avoids excessive switching operations while still maintaining connection stability, thereby preserving data transmission efficiency. The system performs comprehensive evaluation but takes action only when necessary.
Solution Approach 2:
The system performs path quality evaluation periodically rather than continuously, monitoring key parameters at scheduled intervals. This periodic evaluation maintains connection stability by detecting degradation trends while minimizing the frequency of path switching operations, thus avoiding excessive overhead that would reduce data transmission efficiency.
Data Source
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AI summary
The present disclosure provides a path establishment method, a path establishment device, a data transmission method, a data transmission device, a network node and a storage medium. The data establishment method includes: generating, by a first network node, a first message for establishing a first path; and transmitting the first message. The first message includes a first SRv6 SID of each network node of the first path, the first SRv6 SID is used to establish a connection-oriented path, and the first network node is an initial network node of the first path.