Virtual TSN Bridge Port Mapping for Seamless Wireless Streams

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Solution Overview

Problem

In time sensitive networks (TSN), wireless communication links cause frequent stream setup failures due to changing accumulated latency times, disrupting seamless communication when devices move, especially in environments where wireless communication is integrated.

Innovation Solution

The solution involves establishing a method for seamless data transmission using virtual TSN bridges that dynamically manage multiple virtual TSN ports across wireless communication technologies, calculating latency times, and mapping streams to ensure continuous communication even with device movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If wireless communication links are used in TSN, then adaptability and mobility are improved, but accumulated latency changes causing stream setup failures increase

Engineering Contradiction:
Improvewireless communication capabilityVSAvoidstream setup stability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies dynamics by making the stream setup process adaptive to changing wireless conditions. Instead of using fixed latency values, the system dynamically measures actual latency between bridges and adjusts stream reservations accordingly. This allows the TSN to adapt to mobility and channel changes while maintaining reliable communication, resolving the contradiction between wireless adaptability and stream stability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter approach by transitioning from static latency parameters to dynamic latency measurements. The system continuously monitors and updates latency values between virtual bridges, using these updated parameters to maintain stream reservations. This parameter adaptation enables reliable stream setup in wireless environments where latency naturally varies, addressing the reliability issue while preserving wireless functionality.

Inventive Principle:
Principle #35Parameter changes

2Measurement precision

If stream reservation is declared as fail when accumulated latency changes, then latency sensitivity is improved, but communication continuity deteriorates

Engineering Contradiction:
Improvelatency monitoring accuracyVSAvoidcommunication service continuity
Core Design Contradiction:
Measurement precisionVSDuration of action of stationary object

Solution Approach 1:

The patent implements feedback by continuously monitoring latency between virtual bridges and using this information to adjust stream reservations. Instead of declaring failure when latency changes, the system measures the actual latency, compares it against requirements, and adapts the reservation accordingly. This feedback mechanism maintains communication continuity while preserving accurate latency monitoring, resolving the contradiction between precision and continuity.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent applies beforehand cushioning by establishing margin-based stream reservations that can accommodate expected latency variations. The system reserves additional time margins in stream setups to cushion against natural latency fluctuations in wireless environments. This approach prevents premature stream failures while maintaining accurate latency awareness, addressing both monitoring precision and service continuity.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Adaptability or versatility

If virtual TSN bridges move in wireless network, then mobility is improved, but stream connection stability deteriorates

Engineering Contradiction:
Improvedevice mobilityVSAvoidstream connection stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent applies dynamics by enabling virtual TSN bridges to move freely in wireless networks while dynamically updating their latency measurements. The system continuously adapts stream reservations based on current bridge positions and wireless conditions, rather than requiring fixed positions. This dynamic adaptation maintains stream connection stability despite device mobility, resolving the contradiction between mobility and stability.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12537775B2Apparatus and method for transmitting data in time sensitive network
Publication Date: 2026.01.27 KOREA RAILROAD RESEARCH INSTITUTE
  • US12537775B2 patent drawing
  • US12537775B2 patent drawing
  • US12537775B2 patent drawing

AI summary

A method for transmitting data using a time sensitive network (TSN). A first communication device includes a first terminal and a first TSN bridge, and the second communication device includes a second terminal and a second virtual TSN bridge. In the method, the first terminal transmits a virtual TSN bridge connection request to the first virtual TSN bridge. The first virtual TSN bridge transmits a virtual TSN port information request to the second virtual TSN bridge according to the virtual TSN bridge connection request. The second virtual TSN bridge transmits, to the first virtual TSN bridge, information related to a virtual TSN port included in the second virtual TSN bridge. The first virtual TSN bridge determines, based on the information related to the virtual TSN port, a plurality of virtual TSN ports to be used for communication with the second virtual TSN bridge in the first virtual TSN bridge.