TSN Bridge Node Packet Processing via Capability Mapping
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Solution Overview
Problem
There is no effective standard protocol or scheme to regulate the collection, judgment, and propagation of TSN-profile capabilities at each TSN node, leading to uncertainty in whether each TSN node can provide a service consistent with the requirements of the TSN service stream, which affects the processing efficiency and reliability of TSN service packets.
Innovation Solution
A packet processing method is introduced for bridge nodes, where upon receiving a TSN service packet, the node queries a mapping table established based on advertisement information from the source apparatus to determine if it has the necessary TSN-profile capability, and processes the packet accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If no standard protocol is used to regulate TSN-profile capability propagation, then device complexity is reduced, but reliability of TSN service packet processing deteriorates
Solution Approach 1:
The source apparatus performs preliminary action by advertising TSN-profile capability information before actual TSN service packet transmission. The bridge nodes pre-establish mapping tables containing service stream IDs and corresponding TSN-profiles based on this advance advertisement, enabling them to quickly determine capability matching without complex real-time negotiations when packets arrive.
Solution Approach 2:
The patent introduces an intermediary mapping table as a mediator between the source apparatus and bridge nodes. This mapping table stores the relationship between service stream IDs and TSN-profiles, allowing bridge nodes to query capability information efficiently without direct communication with the source apparatus during packet processing, thus simplifying the protocol while maintaining reliability.
2Reliability
If bridge nodes query mapping tables for each TSN service packet, then processing reliability is improved, but processing efficiency deteriorates
Solution Approach 1:
The mapping tables are established in advance by bridge nodes based on advertisement information received from source apparatuses before actual TSN service packet processing begins. This preliminary setup allows bridge nodes to simply query pre-computed mapping tables during packet processing rather than performing complex capability negotiations for each packet, significantly improving processing efficiency while maintaining service consistency.
3Ease of operation
If TSN-profile capability information is propagated without standard protocol, then ease of operation is improved, but measurement precision of capability matching deteriorates
Solution Approach 1:
The source apparatus performs preliminary advertisement of precise TSN-profile capability information in advance. Bridge nodes use this advance information to build accurate mapping tables that precisely match service stream IDs with corresponding TSN-profiles, ensuring high measurement precision of capability matching without requiring complex real-time verification protocols.
Solution Approach 2:
The patent implements a feedback mechanism where destination apparatuses send capability requirement information back to source apparatuses. The source apparatuses use this feedback to adjust and refine their advertised TSN-profile capability information, ensuring that the mapping tables established by bridge nodes accurately reflect actual capability requirements, thus improving matching precision.
Data Source
AI summary
The present application relates to the field of network communication technologies, and provides a packet processing method and device, an advertisement method and device, a bridge node, a source apparatus, a packet processing system, and a computer-readable storage medium. The packet processing method includes: receiving a time sensitive networking (TSN) service packet; querying, according to a packet header of the TSN service packet, a mapping table of service stream IDs and TSN-profiles, where the mapping table of service stream IDs and TSN-profiles is established according to advertisement information of a source apparatus; and processing the TSN service packet according to a result of the querying on the mapping table of service stream IDs and TSN-profiles.