ISO/IEC INTERNATIONAL STANDARD 14476-4 First edition 2010-05-01 Information technology Enhanced communications transport protocol: Specification of QoS management for duplex multicast transport Technologies de l'informationProtocole de transport de communicationsameliore:SpécificationdelagestiondeQoSpourle transport duplex en multidiffusion Reference number ISO/IEC 14476-4:2010(E) IEC ISO/IEC2010 ISO/IEC 14476-4:2010(E) PDF disclaimer shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHTPROTECTEDDOCUMENT @ISO/IEC2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either sO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56.CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland ii @ ISO/IEC 2010 - All rights reserved ISO/IEC14476-4:2010(E) CONTENTS Page 1 Scope. 2 Normative references 3 3.1 Terms defined in Rec. ITU-T X.605|ISO/IEC 13252 3.2 Terms defined in Rec. ITU-T X.606 IISO/IEC 14476-1.. 3.3 Terms defined in Rec. ITU-T X.606.1 IISO/IEC 14476-2 . 3.4 Terms defined in Rec. ITU-T X.607 IISO/IEC 14476-3... 4 Abbreviations.. 4.1 Packet types. 4.2 Miscellaneous . 5 3 6 Components for QoS management.... 5 6.1 Base header.... 6.2 QoS parameters ... 6 6.3 QoS extension element.. 6.4 Acknowledgement element... 6.5 Packets used for QoS management ..... 8 7 QoS negotiation for duplex multicast connection . 8 7.1 Negotiation procedures..... 9 7.2 QoS negotiation in the tree hierarchy ............... 10 7.3 Resource reservation........... 10 8 QoS monitoring and maintenance for the forward channel..... 10 8.1 QoS monitoring for the forward multicast channel... 11 8.2 QoSmaintenancefortheforward multicastchannel.. 13 9 QoS monitoring and maintenance for the backward channel.... 15 9.1 QoS monitoring for the backward unicast channel. 15 9.2 QoS maintenance for the backward unicast channel. 16 AnnexA-Implementation considerations 18 @ ISO/IEC 2010 - All rights reserved ili