TSN Data Processing Adjusting Gate Control for Deterministic Latency
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Solution Overview
Problem
Existing TSN networks cannot guarantee deterministic latency in the transmission of time-sensitive data due to non-deterministic latency caused by network card processing, link transmission, and switch grouping, as well as aging transmission equipment.
Innovation Solution
A method and apparatus for processing data in a TSN network that acquires specific times to identify abnormal entry of data into a sending queue, adjusts the sending time based on computed delay values, and prioritizes time-sensitive data to ensure deterministic latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If TSN gate control lists are deployed after offline static computation, then the network configuration is simple and easy to deploy, but deterministic latency cannot be guaranteed due to non-deterministic latency from network card processing, link transmission, and switch grouping
Solution Approach 1:
The patent implements dynamic adjustment of gate control lists based on real-time monitoring of actual transmission latency. The system continuously compares actual latency measurements against target latency requirements and automatically adjusts gate control parameters to compensate for variations in network card processing, link transmission, and switch grouping behaviors, thereby maintaining deterministic latency guarantees despite dynamic network conditions
Solution Approach 2:
The patent establishes a feedback mechanism that monitors actual transmission latency and uses this information to adjust gate control lists. The system measures real-world latency performance, compares it against expected values, and feeds this information back to modify gate control timing parameters, creating a closed-loop control system that ensures deterministic latency while maintaining deployment simplicity
2Duration of action of stationary object
If transmission equipment ages, then device longevity is achieved, but latency in data packet transmission changes and deterministic latency cannot be maintained
Solution Approach 1:
The patent implements preliminary characterization of transmission equipment latency properties during installation and periodically thereafter. By establishing baseline latency measurements for aging equipment and pre-calculating compensation parameters, the system can proactively adjust gate control lists to maintain deterministic latency guarantees even as equipment characteristics change over time
Solution Approach 2:
The patent dynamically changes gate control list parameters based on detected equipment aging effects. When latency variations are detected that indicate equipment degradation or aging, the system automatically adjusts timing parameters, gate control intervals, and scheduling parameters to compensate for the changed equipment characteristics and maintain deterministic latency performance
3Loss of time
If data is prioritized in sending queues based on time-sensitivity, then low latency is achieved for time-sensitive data, but complex queue management and priority scheduling are required
Solution Approach 1:
The patent segments sending queues into multiple priority levels based on time-sensitivity requirements. By dividing the queue management system into distinct priority tiers with different gate control parameters, the system achieves low latency for time-sensitive data while maintaining manageable complexity through structured segmentation rather than monolithic queue management
Solution Approach 2:
The patent applies different gate control list parameters and scheduling policies to different priority queues based on their specific time-sensitivity requirements. Each queue receives customized local optimization rather than uniform treatment, allowing time-sensitive data to achieve minimal latency while less time-sensitive data uses relaxed parameters, reducing overall system complexity through differentiated local quality
Data Source
AI summary
A method for processing time-sensitive data in a time-sensitive network includes acquiring a first time, a second time and a third time. The first time is a time when the data is actually scheduled, the second time is a time when a gate control operation of the data is planned to begin, and the third time is a duration of a gate control operation of the data. The method also includes identifying whether the data enters a sending queue abnormally based on the first time, the second time and the third time acquired. If the data enters a sending queue abnormally, inform a sender of the data to adjust a sending time.