Earticle

초록

한국어

It is essential to support real-time communication in networked control systems, such as automotive systems or smart factories. Several studies have been conducted to schedule real-time flows by adjusting their priorities using software-defined networking (SDN). However, because its architecture was not originally designed for realtime communication, unexpected challenges may occur if it is utilized without careful consideration. In particular, because SDN does not provide an atomic method for priority adjustment, some flows may violate their timing constraints by receiving additional interference during priority adjustment. In this paper, we propose a novel scheme to safely update the flow priorities in SDN-based real-time systems. Accordingly, we first analyze the challenge that may occur when adjusting flow priorities within a switch. We then develop a scheme that determines safe procedures for priority adjustment. By network emulations, we demonstrate that the above challenge occurs in 178 out of 300 flow sets, but our scheme can effectively prevent all of them.

목차

Abstract
I. INTRODUCTION
II. SYSTEM MODEL
III. SAFE PRIORITY-ADJUSTMENT SCHEME
A. Problem Case upon Priority Adjustment
B. Intra-switch Scheme for Priority Adjustment
IV. EVALUATION
V. CONCLUSION
REFERENCES

키워드

저자

• Sangeun Oh [ The Department of Software and Computer Engineering Ajou University ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국차세대컴퓨팅학회 학술대회

• 간기

  반년간

• 수록기간

  2021~2025

• 십진분류

  KDC 566 DDC 004