1、BSI Standards Publication BS ISO/IEC/IEEE 8802-1AS:2014 Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Part 1AS: Timing and synchronization for time-sensitive applications in bridged local area networksBS ISO/IEC/IEEE 8802-1AS:
2、2014 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO/IEC/IEEE 8802-1AS:2014. The UK participation in its preparation was entrusted to Technical Committee IST/6, Data communications. A list of organizations represented on this committee can be obtained on requ
3、est to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 86409 4 ICS 35.110 Compliance with a Britis
4、h Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2014. Amendments issued since publication Date T e x t a f f e c t e d Reference number ISO/IEC/IEEE 8802-1AS:2014(E) IEEE 2011
5、INTERNATIONAL STANDARD ISO/IEC/ IEEE 8802-1AS First edition 2013-02-15 Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Part 1AS: Timing and synchronization for time- sensitive applications in bridged local area networks Technolo
6、gies de linformation Tlcommunications et change dinformation entre systmes Rseaux locaux et mtropolitains Partie 1AS BS ISO/IEC/IEEE 8802-1AS:2014 IEEE 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any mean
7、s, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without permission in writing from ISO, IEC or IEEE at the respective address below. ISO copyright office IEC Central Office Institute of Electrical and Electronics Engineers, Inc. Case postale 56 3, rue
8、de Varemb 3 Park Avenue, New York CH-1211 Geneva 20 CH-1211 Geneva 20 NY 10016-5997, USA Tel. + 41 22 749 01 11 Switzerland E-mail stds.iprieee.org Fax + 41 22 749 09 47 E-mail inmailiec.ch Web www.ieee.org E-mail copyrightiso.org Web www.iec.ch Web www.iso.org Published in Switzerland ii IEEE 2011
9、All rights reservedBS ISO/IEC/IEEE 8802-1AS:2014 ISO/IEC/IEEE 8802-1AS:2014(E) IEEE 2011 All rights reserved iiiForeword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. Nationa
10、l bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. O
11、ther international organizations, governmental and non- governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. IEEE Standards documents are developed within the IEEE Socie
12、ties and the Standards Coordinating Committees of the IEEE Standards Association (IEEE-SA) Standards Board. The IEEE develops its standards through a consensus development process, approved by the American National Standards Institute, which brings together volunteers representing varied viewpoints
13、and interests to achieve the final product. Volunteers are not necessarily members of the Institute and serve without compensation. While the IEEE administers the process and establishes rules to promote fairness in the consensus development process, the IEEE does not independently evaluate, test, o
14、r verify the accuracy of any of the information contained in its standards. The main task of ISO/IEC JTC 1 is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Stand
15、ard requires approval by at least 75 % of the national bodies casting a vote. Attention is called to the possibility that implementation of this standard may require the use of subject matter covered by patent rights. By publication of this standard, no position is taken with respect to the existenc
16、e or validity of any patent rights in connection therewith. ISO/IEEE is not responsible for identifying essential patents or patent claims for which a license may be required, for conducting inquiries into the legal validity or scope of patents or patent claims or determining whether any licensing t
17、erms or conditions provided in connection with submission of a Letter of Assurance or a Patent Statement and Licensing Declaration Form, if any, or in any licensing agreements are reasonable or non-discriminatory. Users of this standard are expressly advised that determination of the validity of any
18、 patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Further information may be obtained from ISO or the IEEE Standards Association. ISO/IEC/IEEE 8802-1AS was prepared by the LAN/MAN Standards Committee of the IEEE Computer Society (as IEEE Std 802.1AS-2
19、011). It was adopted by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 6, Telecommunications and information exchange between systems, in parallel with its approval by the ISO/IEC national bodies, under the “fast-track procedure” defined in the Partner Standards Dev
20、elopment Organization cooperation agreement between ISO and IEEE. IEEE is responsible for the maintenance of this document with participation and input from ISO/IEC national bodies. ISO/IEC/IEEE 8802 consists of the following parts, under the general title Information technology Telecommunications a
21、nd information exchange between systems Local and metropolitan area networks: Part 11: Wireless LAN medium access control (MAC) and physical layer (PHY) specifications Part 1X: Port-based network access control Part 1AB: Station and media access control connectivity discovery Part 1AE: Media access
22、control (MAC) security Part 1AR: Secure device identity Part 1AS: Timing and synchronization for time-sensitive applications in bridged local area networks BS ISO/IEC/IEEE 8802-1AS:2014 ISO/IEC/IEEE 8802-1AS:2014(E)iv IEEE 2011 All rights reserved Part 15-4: Wireless medium access control (MAC) and
23、physical layer (PHY) specifications for low-rate wireless personal area networks (WPANs) BS ISO/IEC/IEEE 8802-1AS:2014 ISO/IEC/IEEE 8802-1AS:2014(E)IEEE Std 802.1AS ! -2011 IEEE Standard for Local and metropolitan area networks“ Timing and Synchronization for Time-Sensitive Applications in Bridged L
24、ocal Area Networks Sponsor LAN/MAN Standards Committee of the IEEE Computer Society Approved 10 February 2011 IEEE SA-Standards Board IEEE 2011 All rights reserved v BS ISO/IEC/IEEE 8802-1AS:2014 ISO/IEC/IEEE 8802-1AS:2014(E)The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue,
25、New York, NY 10016-5997, USA Copyright 2011 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 30 March 2011. Printed in the United States of America. IEEE, 802, and POSIX are registered trademarks in the U.S. Patent +1 978 750 8400. Permission to photocopy
26、 portions of any individual standard for educational classroom use can also be obtained through the Copyright Clearance Center. IEEE 2011 All rights reserved vii BS ISO/IEC/IEEE 8802-1AS:2014 ISO/IEC/IEEE 8802-1AS:2014(E)Introduction This standard specifies the protocol and procedures used to ensure
27、 that the synchronization requirements are met for time-sensitive applications, such as audio and video, across bridged and virtual bridged local area networks consisting of LAN media where the transmission delays are fixed and symmetrical; for example, IEEE 802.3 TMfull-duplex links. This includes
28、the maintenance of synchronized time during normal operation and following addition, removal, or failure of network components and network reconfiguration. It specifies the use of IEEE 1588 TMspecifications where applicable in the context of IEEE Std 802.1D TM -2004 and IEEE Std 802.1Q TM -2005. aSy
29、nchronization to an externally provided timing signal (e.g., a recognized timing standard such as UTC or TAI) is not part of this standard but is not precluded. This is the first edition of IEEE Std 802.1AS. This standard contains state-of-the-art material. The area covered by this standard is under
30、going evolution. Revisions are anticipated within the next few years to clarify existing material, to correct possible errors, and to incorporate new related material. Information on the current state of this and other IEEE 802 standards may be obtained from: Secretary, IEEE-SA Standards Board 445 H
31、oes Lane Piscataway, NJ 08854 USA Notice to users Laws and regulations Users of these documents should consult all applicable laws and regulations. Compliance with the provisions of this standard does not imply compliance to any applicable regulatory requirements. Implementers of the standard are re
32、sponsible for observing or referring to the applicable regulatory requirements. IEEE does not, by the publication of its standards, intend to urge action that is not in compliance with applicable laws, and these documents may not be construed as doing so. Copyrights This document is copyrighted by t
33、he IEEE. It is made available for a wide variety of both public and private uses. These include both use, by reference, in laws and regulations, and use in private self-regulation, standardization, and the promotion of engineering practices and methods. By making this document available for use and
34、adoption by public authorities and private users, the IEEE does not waive any rights in copyright to this document. a Information on references can be found in Clause 2. This introduction is not part of IEEE Std 802.1AS-2011, IEEE Standard for Local and metropolitan area networks# Timing and Synchronization for Time-Sensitive Applications in Bridged Local Area Networks. viii IEEE 2011 All rights reserved BS ISO/IEC/IEEE 8802-1AS:2014 ISO/IEC/IEEE 8802-1AS:2014(E)
