TSN Flow Mapping Messages for Deterministic DetNet Services
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Solution Overview
Problem
The interaction of Time-Sensitive Networking (TSN) related information in Deterministic Networking (DetNet) networks is lacking, hindering the implementation of deterministic services with low latency, low packet loss, and high reliability.
Innovation Solution
Implementing a message interaction method and apparatus that utilize Border Gateway Protocol (BGP) and Path Computation Element Protocol (PCEP) Flow Specifications to facilitate the interaction of TSN information in DetNet networks, specifically through extended BGP/PCEP Flowspec methods for flow identification, filtering, and mapping between TSN streams and DetNet flows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TSN configuration messages are exchanged between communication nodes, then packet filtering and mapping capabilities are improved, but network complexity increases
Solution Approach 1:
The patent introduces a dedicated TSN configuration message as an intermediary carrier that transports flow filtering information and flow mapping information between communication nodes. This message structure acts as a mediator that systematically organizes and transmits multiple parameters (flow identifiers, filtering rules, mapping relationships) in a standardized format, reducing the complexity of direct node-to-node configuration interactions while ensuring reliable deterministic service setup
2Reliability
If flow filtering and mapping information is configured, then packet loss rate is reduced, but configuration time increases
Solution Approach 1:
The patent implements preliminary configuration by pre-defining flow filtering information and flow mapping information in the TSN configuration message before actual data transmission begins. The communication nodes exchange these configuration messages in advance to establish filtering rules and mapping relationships, ensuring that packet loss prevention mechanisms are already in place before deterministic service traffic flows through the network
Solution Approach 2:
The TSN configuration message enables self-service configuration where communication nodes automatically process and apply the flow filtering and mapping information contained in the message. The nodes use the carried information to autonomously configure their forwarding behaviors without requiring manual intervention or complex external configuration processes, reducing overall configuration time
Data Source
AI summary
Provided are a message interaction method and apparatus, a device, and a storage medium. The method is applied to a first communication node and includes receiving a Time-Sensitive Networking (TSN) configuration message sent by a second communication node, where the TSN configuration message carries flow filtering information and flow mapping information; and performing packet filtering and mapping based on the TSN configuration message.