TSN Packet Timeout Handling for Deterministic End-to-End Delay
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Solution Overview
Problem
Current schemes for deterministic forwarding in Time Sensitive Networking (TSN) fail to address data packet timeout processing, leading to unmet end-to-end delay requirements.
Innovation Solution
An information processing method that includes receiving data messages with time adjustment information, processing this information to determine processing times, and performing additional processing based on time adjustment and preset thresholds to manage data message timeouts, ensuring compliance with end-to-end delay requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If data packets are forwarded through multiple network devices using SR technology, then the transmission path can be optimized for low delay, but the problem of data packet timeout processing occurs at intermediate network devices
Solution Approach 1:
The patent applies preliminary action by pre-calculating and embedding time adjustment information in data packets before transmission. Each network device along the path has pre-configured processing time thresholds, enabling proactive timeout management rather than reactive handling. This allows the system to anticipate and prevent timeout issues before they occur, maintaining both low delay and high reliability.
Solution Approach 2:
The patent implements feedback mechanisms where each network device monitors its processing time for data packets and compares it against preset thresholds. When timeout conditions are detected, the system provides feedback by adjusting time parameters and reprocessing packets. This closed-loop control ensures that delay requirements are met while reliably handling timeout situations at intermediate devices.
2Loss of time
If strict time thresholds are enforced for data packet processing, then end-to-end delay requirements are met, but network device complexity increases due to timeout processing mechanisms
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting time adjustment information embedded in data packets based on processing conditions. Instead of rigid time thresholds, the system modifies time parameters adaptively at each network device. This allows enforcement of delay requirements while simplifying device complexity through flexible parameter adjustment rather than complex structural mechanisms.
3Stability of the object's composition
If time adjustment information is processed at each network device, then deterministic forwarding is achieved, but the processing time for each data packet increases
Solution Approach 1:
The patent resolves this contradiction by performing preliminary actions - time adjustment information is calculated and embedded in data packets before they reach intermediate network devices. Each device only needs to read pre-configured thresholds and compare against arrival times, rather than performing complex real-time calculations. This maintains deterministic forwarding while minimizing additional processing time at each hop.
Data Source
AI summary
An information processing method, a network device, a network system, and a storage medium are disclosed. The information processing method may include: receiving a first data message comprising first time adjustment information; performing first processing on the first data message to obtain the first time adjustment information; acquiring a processing time for performing the first processing on the first data message; and in response to determining a presence of data message timeout processing, performing second processing on the first data message based on the first time adjustment information, the processing time and a preset processing time threshold.