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Enhanced FRER Mechanism in Time-Sensitive Networking for Reliable Edge Computing.

Shaoliu Hu1, Yueping Cai1, Shengkai Wang1

  • 1School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 400030, China.

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Summary

This study introduces a new method for Time-Sensitive Networking (TSN) using Frame Replication and Elimination for Reliability (FRER). The approach enhances network reliability and reduces delay jitter in industrial edge computing applications.

Keywords:
edge computingedge-disjoint path pairframe replication and elimination for the reliabilitypath reliabilitytime-sensitive networking

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Area of Science:

  • Industrial Internet of Things (IIoT)
  • Network Engineering
  • Reliability Engineering

Background:

  • Time-Sensitive Networking (TSN) and edge computing are key for the Industrial Internet.
  • Frame Replication and Elimination for Reliability (FRER) enhances TSN reliability via parallel data transmission on disjoint paths.
  • Existing FRER mechanisms face challenges with path reliability and finding fully disjoint paths.

Purpose of the Study:

  • To propose a novel method for selecting edge-disjoint path pairs that considers path reliability for FRER in TSN.
  • To address limitations in current FRER implementations regarding path dependability and path pair availability.
  • To improve the overall robustness and performance of TSN in industrial edge environments.

Main Methods:

  • Development of a path reliability model to quantify the dependability of network routes.
  • Integration of the reliability model with the Edge-Disjoint Path Pairs Selection (EDPPS) algorithm.
  • Computation of optimal working and redundant paths to enhance FRER performance.

Main Results:

  • The proposed method effectively improves path reliability within TSN networks.
  • Significant reduction in delay jitter for data frames was observed.
  • A 15.6% reduction in delay jitter was achieved at a network load of 0.9 compared to traditional FRER.

Conclusions:

  • The novel approach enhances TSN reliability and performance for edge computing.
  • Considering path reliability in FRER is crucial for robust industrial networks.
  • The method offers a practical solution for overcoming FRER limitations in demanding industrial settings.