WO2003085921A3 - Method and apparatus for ethernet prioritized device clock synchronization - Google Patents

Method and apparatus for ethernet prioritized device clock synchronization Download PDF

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Publication number
WO2003085921A3
WO2003085921A3 PCT/US2003/009724 US0309724W WO03085921A3 WO 2003085921 A3 WO2003085921 A3 WO 2003085921A3 US 0309724 W US0309724 W US 0309724W WO 03085921 A3 WO03085921 A3 WO 03085921A3
Authority
WO
WIPO (PCT)
Prior art keywords
messages
clock synchronization
ethernet
tagged
priority identifier
Prior art date
Application number
PCT/US2003/009724
Other languages
French (fr)
Other versions
WO2003085921A2 (en
Inventor
Francois Jammes
Jacques Camerini
Julien Lagier
Original Assignee
Schneider Automation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Automation filed Critical Schneider Automation
Priority to DE60330546T priority Critical patent/DE60330546D1/en
Priority to EP03714469A priority patent/EP1491006B1/en
Publication of WO2003085921A2 publication Critical patent/WO2003085921A2/en
Publication of WO2003085921A3 publication Critical patent/WO2003085921A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40143—Bus networks involving priority mechanisms
    • H04L12/40163—Bus networks involving priority mechanisms by assigning priority to messages according to a message field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/11—Identifying congestion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/13—Flow control; Congestion control in a LAN segment, e.g. ring or bus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2425—Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
    • H04L47/2433—Allocation of priorities to traffic types
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/74—Admission control; Resource allocation measures in reaction to resource unavailability
    • H04L47/741—Holding a request until resources become available
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/801—Real time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/803—Application aware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/805—QOS or priority aware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/822—Collecting or measuring resource availability data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/823—Prediction of resource usage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/83—Admission control; Resource allocation based on usage prediction

Abstract

A method and system for transferring a plurality of messages in an Ethernet industrial control environment. The messages are tagged with identifiers of varying levels of priority. The system has a serial network bus. Clock synchronization messages generated by a master device are tagged with a higher priority identifier, while other messages types are tagged with a lesser priority identifier. Data having the highest priority identifier is placed onto the bus before placing data with a lesser priority identifier onto the bus.
PCT/US2003/009724 2002-04-02 2003-03-31 Method and apparatus for ethernet prioritized device clock synchronization WO2003085921A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE60330546T DE60330546D1 (en) 2002-04-02 2003-03-31 METHOD AND DEVICE FOR CLOCKS SYNCHRONIZATION OF PREFERRED ETHERNET DEVICES
EP03714469A EP1491006B1 (en) 2002-04-02 2003-03-31 Method and apparatus for ethernet prioritized device clock synchronization

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/063,237 2002-04-02
US10/063,237 US7028204B2 (en) 2000-09-06 2002-04-02 Method and apparatus for ethernet prioritized device clock synchronization

Publications (2)

Publication Number Publication Date
WO2003085921A2 WO2003085921A2 (en) 2003-10-16
WO2003085921A3 true WO2003085921A3 (en) 2003-12-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/009724 WO2003085921A2 (en) 2002-04-02 2003-03-31 Method and apparatus for ethernet prioritized device clock synchronization

Country Status (4)

Country Link
US (1) US7028204B2 (en)
EP (1) EP1491006B1 (en)
DE (1) DE60330546D1 (en)
WO (1) WO2003085921A2 (en)

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Also Published As

Publication number Publication date
EP1491006A2 (en) 2004-12-29
WO2003085921A2 (en) 2003-10-16
EP1491006B1 (en) 2009-12-16
DE60330546D1 (en) 2010-01-28
US20020169844A1 (en) 2002-11-14
US7028204B2 (en) 2006-04-11

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