TSN Transmission Control Using Time-Aware Bandwidth Reuse
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Solution Overview
Problem
Existing transmission control policies in Time-Sensitive Networking (TSN) lead to bandwidth waste, reserved bandwidth inefficiency, guard band policies causing significant bandwidth loss, and preemption policies introducing latency jitter, which affect the deterministic transmission of time-sensitive traffic flows.
Innovation Solution
A data transmission method and apparatus that generates a transmission control policy based on current time information and message attribute information to optimize bandwidth utilization and minimize latency jitter, incorporating reserved bandwidth reuse, remaining-time-based transmission, and optimized preemption control policies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transmission control policy (such as bandwidth resource reservation policy) is used to ensure real-time and deterministic transmission of time-sensitive traffic flows, then transmission reliability is improved, but bandwidth utilization deteriorates
Solution Approach 1:
The patent implements dynamic transmission control policies that adapt to real-time network conditions and traffic characteristics. Instead of static bandwidth reservation, the system dynamically adjusts transmission parameters based on current time information and message attributes, allowing bandwidth allocation to flexibly respond to actual needs while maintaining deterministic transmission guarantees for time-sensitive flows.
Solution Approach 2:
The patent changes transmission parameters such as bandwidth allocation, latency thresholds, and scheduling priorities based on message attribute information and current time. This allows the system to optimize bandwidth utilization by adjusting parameters dynamically rather than maintaining fixed reservations, thereby improving overall efficiency while preserving real-time transmission reliability when needed.
2Reliability
If a guard band policy is used to ensure deterministic transmission, then transmission reliability is improved, but bandwidth loss increases significantly
Solution Approach 1:
Instead of applying guard band policies universally to all traffic, the patent applies partial action by selectively using deterministic transmission controls only for time-sensitive traffic flows that require it. Non-time-sensitive flows use more efficient bandwidth allocation without guard bands, reducing overall bandwidth loss while maintaining deterministic transmission where necessary.
Solution Approach 2:
The patent applies different transmission control qualities to different traffic flows based on their requirements. Time-sensitive flows receive deterministic transmission with appropriate guard bands, while non-time-sensitive flows use more aggressive bandwidth utilization. This local differentiation reduces overall bandwidth loss while preserving deterministic transmission for critical flows.
3Reliability
If a preemption policy is used to prioritize time-sensitive traffic, then transmission reliability is improved, but latency jitter increases
Solution Approach 1:
The patent uses preliminary action by pre-scheduling time-sensitive traffic flows at specific time slots before transmission occurs. This advance scheduling eliminates the need for runtime preemption, as time-sensitive flows are already allocated dedicated transmission windows. Non-time-sensitive flows fill in the remaining gaps, ensuring deterministic transmission without introducing latency jitter through dynamic preemption.
Data Source
AI summary
A data transmission method and apparatus, an electronic device, and a storage medium are disclosed. The data transmission method may include: acquiring current time information (S1100); acquiring message attribute information of a current traffic flow to be sent (S1200); generating a transmission control policy based on the current time information and the message attribute information (S1300); and controlling traffic flow transmission in time-sensitive networking based on the transmission control policy (S1400).