IEEE 802 1AS CORR 1-2013 en Local and metropolitan area networks - Timing and Synchronization for Time-Sensitive Applications in Bridged Local Area Networks- Co.pdf

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1、 IEEE Standard for Local and metropolitan area networks Timing and Synchronization for Time-Sensitive Applications in Bridged Local Area Networks Corrigendum1: Technical and Editorial Corrections Sponsored by the LAN/MAN Standards Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA IEEE Compute

2、r Society IEEE Std 802.1AS-2011/Cor 1-2013 (Corrigendum to IEEE Std 802.1AS-2011) IEEE Std 802.1AS-2011/Cor 1-2013(Corrigendum toIEEE Std 802.1AS-2011)IEEE Standard for Local and metropolitan area networksTiming and Synchronization for Time-Sensitive Applications in Bridged Local Area NetworksCorrig

3、endum 1: Technical and Editorial CorrectionsLAN/MAN Standards Committeeof theIEEE Computer SocietyApproved 23 August 2013IEEE-SA Standards BoardThe Institute of Electrical and Electronics Engineers, Inc.3 Park Avenue, New York, NY 10016-5997, USACopyright 2013 by The Institute of Electrical and Elec

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17、 rights, is entirely theirown responsibility. Further information may be obtained from the IEEE Standards Association.vi Copyright 2013 IEEE. All rights reserved.ParticipantsAt the time this corrigendum was submitted to the IEEE-SA Standards Board for approval, the IEEE 802.1Working Group had the fo

18、llowing membership:Tony Jeffree, 802.1 Working Group ChairGlenn Parsons, 802.1 Vice Chair and Maintenance Task Group ChairGeoffrey Garner, EditorTing AoKenneth BoehlkeChristian BoigerPaul BottorffJeffrey CatlinXin ChangWeiying ChengDiego CrupnicoffRodney CummingsAboubacar Kader DiarraJanos FarkasDon

19、ald FedykNorman FinnAndre FredetteAnoop GhanwaniFranz GoetzMark GravelEric GrayRobert GrowYingjie GuCraig GuntherStephen HaddockHitoshi HayakawaMirko JakovljevicMarkus JochimMichael Johas TeenerGirault JonesHal KeenMarcel KiesslingPhilippe KleinOliver KleinebergJeff LynchBen Mack-CraneJohn Messenger

20、Anatoly MoldovanskyEric MultanenHenry MuyshondtDavid OlsenDonald PannellKaren RandallDan RomascanuJessy RouyerPanagiotis SaltsidisRick SchellMichael SeamanKoichiro SetoDaniel SextonJohannes SpechtKevin StantonWilfried SteinerPatricia ThalerJeremy TouveAlbert TretterMaarten VissersKarl WeberYuehua We

21、iMin XiaoCopyright 2013 IEEE. All rights reserved. viiThe following members of the individual balloting committee voted on this standard. Balloters may havevoted for approval, disapproval, or abstention. Thomas AlexanderButch AntonAlex AshleyMichael BahrHugh BarrassChristian BoigerAshley Butterworth

22、William ByrdJuan CarreonKeith ChowRodney CummingsAlessandro De FilippoWael William DiabPatrick DiamondDonald FedykYukihiro FujimotoGeoffrey GarnerAaron GelterGregory GilloolyDavid GoodallRandall GrovesMichael GundlachCraig GuntherWerner HoelzlDavid HunterNoriyuki IkeuchiAtsushi ItoRaj JainTony Jeffr

23、eeMichael Johas TeenerGirault JonesShinkyo KakuPiotr KarockiStuart KerryLior KhermoshYongbum KimGeoff LadwigShen LohWilliam LumpkinsMichael LynchElvis MaculubaWayne MangesRoger MarksArthur MarrisJeffery MastersMichael McInnisJonathon MclendonMichael S. NewmanCharles NgetheNick S.A. NikjooSatoshi Oba

24、raDavid OlsenSatoshi OyamaMaximilian RiegelRobert RobinsonBenjamin RolfeJessy RouyerRandall SafierJohn SanthoffBartien SayogoShusaku ShimadaKevin StantonThomas StaraiWalter StrupplerPatrik SundstromWilliam TaylorDmitri VarsanofievPrabodh VarshneySrinivasa VemuruJohn VergisKarl WeberHung-Yu WeiOren Y

25、uenDaidi Zhongviii Copyright 2013 IEEE. All rights reserved.When the IEEE-SA Standards Board approved this standard on 23 August 2013, it had the followingmembership:John Kulick, ChairDavid J. Law, Vice ChairRichard H. Hulett, Past ChairKonstantinos Karachalios, Secretary*Member EmeritusAlso include

26、d are the following nonvoting IEEE-SA Standards Board liaisons:Richard DeBlasio, DOE RepresentativeMichael Janezic, NIST RepresentativeMichelle D. TurnerIEEE Standards Senior Program Manager, Document DevelopmentKathryn BennettIEEE Standards Program Manager, Technical Program DevelopmentMasayuki Ari

27、yoshiPeter BalmaFarooq BariTed BurseWael William DiabStephen DukesJean-Philippe FaureAlexander GelmanMark HalpinGary HoffmanPaul HouzJim HughesMichael JanezicJoseph L. Koepfinger*Oleg LogvinovRon PetersenGary RobinsonJon Walter RosdahlAdrian StephensPeter SutherlandYatin TrivediPhil WinstonYu YuanCo

28、pyright 2013 IEEE. All rights reserved. ixIntroductionThis standard contains state-of-the-art material. The area covered by this standard is undergoing evolution.Revisions are anticipated within the next few years to clarify existing material, to correct possible errors, andto incorporate new relate

29、d material. Information on the current revision state of this and other IEEE 802standards may be obtained fromSecretary, IEEE-SA Standards Board445 Hoes LaneP.O. Box 1331Piscataway, NJ 08855-1331USAThis introduction is not part of IEEE Std 802.1AS-2011/Cor 1-2013, IEEE Standard for Local and metropo

30、litan areanetworksTiming and Synchronization for Time-Sensitive Applications in Bridged Local Area NetworksCorrigendum 1: Technical and editorial corrections.x Copyright 2013 IEEE. All rights reserved.Copyright 2013 IEEE. All rights reserved. xiContents2. Normative references 23. Definitions 55. Con

31、formance . 75.3 Time-aware Bridge and end station requirements . 75.5 MAC-specific timing and synchronization methods for IEEE Std 802.11 76. Conventions 96.3 Data types and on-the-wire formats.97. Time synchronization model for a bridged local area network 117.3 Time synchronization 117.4 Time-awar

32、e system architecture 128. IEEE 802.1AS concepts and terminology 158.2 Timescale . 158.5 Ports . 158.6 Time-aware system characterization . 1610. Media-independent layer specification . 1710.2 Time-synchronization state machines 1710.3 Best master clock selection and announce interval setting state

33、machines . 2010.4 Message attributes 2610.5 Message formats 2711. Media-dependent layer specification for full-duplex, point-to-point links . 2911.1 Overview 2911.2 State machines for MD entity specific to full-duplex, point-to-point links. 3111.3 Message attributes 3811.4 Message formats 3812. Medi

34、a-dependent layer specification for IEEE 802.11 links 3912.1 Overview 3912.2 Messages 4012.3 Determination of asCapable. 4112.4 State machines . 4114. Timing and synchronization management 4314.1 General. 4314.7 Port Parameter Statistics 4615. Managed object definitions . 4715.5 IEEE 802.1AS MIB mod

35、ule . 47Annex A (normative) Protocol Implementation Conformance Statement (PICS) proforma . 101Annex B (normative) Performance requirements . 105xii Copyright 2013 IEEE. All rights reserved.Annex C (normative) Time-scalesTimescales and epochs . 107Annex B (informative) Bibliography 111Copyright 2013

36、 IEEE. All rights reserved. xiiiList of figuresFigure 7-3Example delay measurement 11Figure 7-4Time-aware system model 12Figure 10-2Time-synchronization state machinesoverview and interrelationships. 17Figure 10-4PortSyncSyncReceive state machine 19Figure 10-11Best master clock selection state machi

37、nesoverview and interrelationships 21Figure 10-13PortAnnounceInformation state machine23Figure 10-16AnnounceIntervalSetting state machine 26Figure 11-2Transport of time-synchronization information 29Figure 11-6MDSyncReceiveSM state machine. 33Figure 11-8MDPdelayReq state machine 36Figure 11-10LinkDe

38、laySyncIntervalSetting state machine. 37Figure 12-1Timing measurement procedure for IEEE 802.11 links . 40xiv Copyright 2013 IEEE. All rights reserved.List of tablesTable 8-1Illustration of formation of clockIdentity from EUI-48 . 15Table 10-2Destination address for Announce and Signaling messages 2

39、7Table 10-6Values of flag bits. 28Table 11-0Value of neighborPropDelayThresh for various links 32Table 11-1Destination address for Sync, Follow_Up, Pdelay_Req, Pdelay_Resp, and Pdelay_Resp_Follow_Up messages. 38Table 11-4Values of flag bits. 38Table C.1Time-scaleTimescale parameters. 107Table C.2Tim

40、e-scaleTimescale conversions . 109Copyright 2013 IEEE. All rights reserved. 1IEEE Standard for Local and metropolitan area networksTiming and Synchronization for Time-Sensitive Applications in Bridged Local Area NetworksCorrigendum 1: Technical and Editorial CorrectionsIMPORTANT NOTICE: This standar

41、d is not intended to ensure safety, security, health, orenvironmental protection in all circumstances. Implementers of the standard are responsible fordetermining appropriate safety, security, environmental, and health practices or regulatory requirements.This IEEE document is made available for use

42、 subject to important notices and legal disclaimers. Thesenotices and disclaimers appear in all publications containing this document and may be found under theheading “Important Notice” or “Important Notices and Disclaimers Concerning IEEE Documents.”They can also be obtained on request from IEEE o

43、r viewed at http:/standards.ieee.org/IPR/disclaimers.html.(This corrigendum is based on IEEE Std 802.1AS-2011.)NOTEThe editing instructions contained in this corrigendum define how to merge the material contained therein intothe existing base standard and its amendments to form the comprehensive sta

44、ndard.1The editing instructions are shown in bold italic. Four editing instructions are used: change, delete, insert,and replace. Change is used to make corrections in existing text or tables. The editing instruction specifiesthe location of the change and describes what is being changed by using st

45、rikethrough (to remove oldmaterial) and underscore (to add new material). Delete removes existing material. Insert adds new materialwithout disturbing the existing material. Deletions and insertions may require renumbering. If so,renumbering instructions are given in the editing instruction. Replace

46、 is used to make changes in figures orequations by removing the existing figure or equation and replacing it with a new one. Editing instructions,change markings, and this NOTE will not be carried over into future editions because the changes will beincorporated into the base standard.1Notes in text

47、, tables, and figures are given for information only and do not contain requirements needed to implement the standard.IEEECORRIGENDUM TO IEEE Std 802.1AS-2011: BRIDGED LANS Std 802.1AS-2011/Cor 1-20132 Copyright 2013 IEEE. All rights reserved.2. Normative referencesChange Clause 2 as follows:The fol

48、lowing referenced documents are indispensable for the application of this standard (i.e., they must beunderstood and used, so each referenced document is cited in text and its relationship to this document isexplained). For dated references, only the edition cited applies. For undated references, th

49、e latest edition ofthe referenced document (including any amendments or corrigenda) applies.IEEE P802.11vTM(D15.0, September 2010), Draft Standard for Information technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Specific requirements, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY)Specifications-Amendment 8: IEEE 802.11TMWireless Network Management.2IEEE Std 802.1DTM-2004, IEEE Standard for Local and metropolitan area networks-Media Access Co