Application Research of Priority Scheduling in Switched Industrial Ethernet

TAN Ming; WEI Zhen; HAN Jiang-hong; ZHONG Bo-cheng

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Application Research of Priority Scheduling in Switched Industrial Ethernet

更新时间：2026-09-04

- Application Research of Priority Scheduling in Switched Industrial Ethernet
- Vol. 27, Issue 5, Pages: 148-152(2010)
- 作者机构：
  
  1. 1 合肥工业大学计算机与信息学院,安徽,合肥,230009
  2. 2 合肥学院机构网络与智能信息处理重点实验室,安徽,合肥,230601
- 作者简介：
- 基金信息：
- DOI：
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- Published：2010
- 稿件说明：
移动端阅览
檀明, 魏臻, 韩江洪, 钟伯成. 优先级调度在交换式工业以太网中的应用研究[J]. 微电子学与计算机, 2010, 27(5): 148-152.

TAN Ming, WEI Zhen, HAN Jiang-hong, et al. Application Research of Priority Scheduling in Switched Industrial Ethernet[J]. 2010, 27(5): 148-152.
檀明, 魏臻, 韩江洪, 钟伯成. 优先级调度在交换式工业以太网中的应用研究[J]. 微电子学与计算机, 2010, 27(5): 148-152. DOI：

TAN Ming, WEI Zhen, HAN Jiang-hong, et al. Application Research of Priority Scheduling in Switched Industrial Ethernet[J]. 2010, 27(5): 148-152. DOI：

摘要

针对交换式以太网用于工业实时通信时不能确保数据按时送达问题

在通信站点和交换机端引入IEEE802.1p优先级服务机制

通过设置实时优先级字段来区分其不同的紧急程度的实时数据帧

并采用非抢占式固定优先级调度算法改善实时数据帧的传输时延.通过将调度分析法和网络演算法相结合

提出了一种混合的实时数据帧传输时延上界计算方法.比较研究表明该方法得到的结果比网络演算法更准确.

Abstract

To overcome the drawback that the switched Ethernet does not guarantee the timely delivery of real-time data in industrial communication

IEEE802.1p queuing feature was introduced into both Ethernet switches and communication nodes to give real-time data the priority to access network. In addition

real-time priority field was introduced into real-time data frames to differentiate their emergency degree

and non-preemptive fixed priority scheduling method was applied to improve the end-to-end delay of real-time data. By combining worst-case response time analysis method and network calculus approach

a hybrid method to optimize upper bound of end-to-end delay of real-time data was also proposed. A comparison study showed the advantage of the method.

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