Analysis and Control of Real-Time Switched Ethernet
Date Issued
2004
Date
2004
Author(s)
Tu, Yuan-Chung
DOI
en-US
Abstract
Ethernet is an internationally standardized local area network technology. More and more factory equip with communication and control interfaces based on Ethernet. However, the equipments in factory automatic system must be more firm and solid than which are used in the commercial network. One popular network product is switch. Most switches using in office are designed for commercial networks. But factory environment is different from office environment. We can not make sure that switches for commercial network are also suitable for factory automation systems. Hence, we focus on the special requirements of the control-level within factory communication systems to transmit periodic real-time data via a switched Ethernet network. Traditional switch does not offer the capability to adjust the sampling period of each nodes connected to the switch port based on the network utilization. In the thesis, we provide an AQM-like (Active Queue Management) method to adjust the sampling period to conform the stable condition.
This thesis includes six chapters including the Introduction chapter. The rest of the thesis is organized as follows: The contents of Chapter 2 are about the background of Ethernet. Chapter 3 discusses the basic architectures, queueing disciplines, and forwarding techniques of a switch. Chapter 4 describes timing analysis about Ethernet with hub and Ethernet with switch. Chapter 5 presents the performance evaluation results of switched Ethernet using AQM-like method. The thesis concludes in Chapter 6, summarizing the main contributions and indicating the future research directions.
Keywords: switched Ethernet, AQM-like (Active Queue Management) method
Subjects
交換式乙太網路
AQM-like (Avtive Queue Management) 方法
switched ethernet
AQM-like (Avtive Queue Management) method
Type
thesis
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