|
TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
LTE;
5G;
Multimedia Broadcast/Multicast Service (MBMS);
Protocols and codecs
(3GPP TS 26.346 version 17.0.0 Release 17)
---------------------- Page: 1 ----------------------
3GPP TS 26.346 version 17.0.0 Release 17 1 ETSI TS 126 346 V17.0.0 (2022-05)
Reference
RTS/TSGS-0426346vh00
Keywords
5G,LTE,UMTS
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871
Important notice
The present document can be downloaded from:
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
If you find errors in the present document, please send your comment to one of the following services:
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure Program:
https://www.etsi.org/standards/coordinated-vulnerability-disclosure
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
No representation or warranty is made that this deliverable is technically accurate or sufficient or conforms to any law
rule and/or regulation and further, no representation or warranty is made of merchantability or fitness
and/or governmental
for any particular purpose or against infringement of intellectual property rights.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.
Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2022.
All rights reserved.
ETSI
---------------------- Page: 2 ----------------------
3GPP TS 26.346 version 17.0.0 Release 17 2 ETSI TS 126 346 V17.0.0 (2022-05)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (https://ipr.etsi.org/).
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP
Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the
®
oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Legal Notice
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities. These shall be
interpreted as being references to the corresponding ETSI deliverables.
The cross reference between 3GPP and ETSI identities can be found under .
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
---------------------- Page: 3 ----------------------
3GPP TS 26.346 version 17.0.0 Release 17 3 ETSI TS 126 346 V17.0.0 (2022-05)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 13
Introduction . 13
1 Scope . 14
2 References . 14
3 Definitions and abbreviations . 20
3.1 Definitions . 20
3.2 Abbreviations . 21
4 MBMS system description . 23
4.1 MBMS functional layers . 23
4.2 MBMS User Service Entities . 23
4.3 MBMS bearer service architecture . 24
4.4 Functional Entities to support MBMS User Services . 24
4.4.1 MBMS User Service Architecture . 24
4.4.1a Content Provider / Multicast Broadcast Source . 27
4.4.1b Group Communication Service Application Server (GCS AS) . 27
4.4.2 MBMS Key Management Function . 27
4.4.3 MBMS Session and Transmission Function . 28
4.4.4 User Service Discovery / Announcement function . 28
4.4.5 Interactive Announcement Function . 28
4.4.6 MBMS UE . 28
4.5 Usage of identity of MBMS session . 29
4.6 Time Synchronization between the BM-SC and MBMS UEs . 29
5 Procedures and protocols. 30
5.1 Introduction . 30
5.2 User Service Discovery/Announcement . 30
5.2.1 Introduction. 30
5.2.2 MBMS User Service Description Metadata Fragments . 31
5.2.2.1 Introduction . 31
5.2.2.2 Session Description . 33
5.2.2.3 Associated Delivery Procedure Description . 34
5.2.2.3A Consumption Reporting Description . 34
5.2.2.4 Security Description . 34
5.2.2.5 FEC Repair Stream Description . 34
5.2.2.6 Media Presentation Description . 34
5.2.2.7 Schedule Description . 35
5.2.2.8 Filter Description . 35
5.2.2.9 Application Service Description . 36
5.2.3 User Service Announcement over a MBMS bearer . 36
5.2.3.1 General . 36
5.2.3.1.1 Service Announcement for Receive-Only-Mode Services . 37
5.2.3.1.2 Service Announcement for non Receive-Only-Mode Services . 37
5.2.3.2 Metadata Envelope Transport . 38
5.2.3.3 Metadata Envelope and Metadata Fragment Association with FLUTE . 38
5.2.4 User Service Announcement using Interactive Announcement Function . 38
5.2.5 User Service Announcement over point-to-point push bearers. 38
5.2.5.1 General . 38
5.2.5.2 Supported Metadata Syntaxes . 39
5.2.5.3 Consistency Control and Syntax Independence . 39
5.2.5.4 Metadata Envelope Definition . 39
ETSI
---------------------- Page: 4 ----------------------
3GPP TS 26.346 version 17.0.0 Release 17 4 ETSI TS 126 346 V17.0.0 (2022-05)
5.2.5.5 Delivery of the Metadata Envelope . 39
5.2.5.6 Void. 39
5.2.5.7 User service announcement over SMS bearers . 39
5.2.5.8 User service announcement over HTTP push bearers . 39
5.2.6 Metadata Fragment Encapsulation to aggregate Service Announcement Documents . 39
5.2.7 Registration and Deregistration Procedure for MBMS User Service Consumption . 40
5.3 User Service Initiation/Termination . 41
5.3.1 Initiation of MBMS Bearer Service based Services . 41
5.3.2 Termination of MBMS Bearer Service based Services . 41
5.3.3 Initiation of Unicast Bearer Service based Services . 42
5.3.4 Termination of Unicast Bearer Service based Services . 42
5.3.5 Scalable Service Initiation and Termination for MBMS Services . 43
5.3.5.1 General . 43
5.3.5.2 Randomization of Service Initiation over Time . 43
5.3.5.3 Randomization of Service Termination over Time . 43
5.4 MBMS Data Transfer Procedure . 44
5.4.1 MBMS Data Transfer Procedure using MBMS Bearer Services . 44
5.4.2 MBMS Data Transfer Procedure using other UMTS Bearer Services . 45
5.4A Procedures between Content Provider and BM-SC . 45
5.5 MBMS Protocols . 45
5.6 DASH and MBMS . 45
5.7 Generic Application Service. 47
6 Introduction on Delivery Methods . 48
7 Download Delivery Method . 49
7.1 Introduction . 49
7.2 FLUTE usage for MBMS download . 49
7.2.0 General . 49
7.2.1 Fragmentation of Files . 50
7.2.2 Symbol Encoding Algorithm . 50
7.2.3 Blocking Algorithm . 50
7.2.4 Congestion Control . 50
7.2.5 Content Encoding of Files for Transport . 51
7.2.6 Transport File Grouping . 51
7.2.7 Signalling of Parameters with Basic ALC/FLUTE Headers . 51
7.2.8 Signalling of Parameters with FLUTE Extension Headers . 52
7.2.9 Signalling of Parameters with FDT Instances . 52
7.2.10 FDT Schema . 53
7.2.10.1 Extended FLUTE FDT Schema . 53
7.2.10.2 3GPP FDT Extension Type Schema . 55
7.2.10.3 IETF FDT Schema . 56
7.2.10.4 Example of FDT . 57
7.2.10.5 3GPP FDT Extensions . 58
7.2.10.6 FEC Redundancy Level Extension . 58
7.2.11 MBMS Session Identity . 58
7.2.12 FEC Scheme definition . 58
7.2.12.1 General . 58
7.2.13 Caching Directives . 58
7.2.14 Indicating a full FDT snapshot . 59
7.2.15 Decryption key indicating of protected download data . 59
7.3 SDP for Download Delivery Method . 60
7.3.1 Introduction. 60
7.3.2 SDP Parameters for MBMS download session . 60
7.3.2.1 Sender IP address . 61
7.3.2.2 Number of channels . 61
7.3.2.3 Destination IP address and port number for channels . 61
7.3.2.4 Transport Session Identifier (TSI) of the session . 61
7.3.2.5 Multiple objects transport indication . 62
7.3.2.6 Session Timing Parameters . 62
7.3.2.7 Mode of MBMS bearer per media . 62
7.3.2.8 FEC capabilities and related parameters . 62
ETSI
---------------------- Page: 5 ----------------------
3GPP TS 26.346 version 17.0.0 Release 17 5 ETSI TS 126 346 V17.0.0 (2022-05)
7.3.2.9 Service-language(s) per media . 63
7.3.2.10 Bandwidth Specification . 63
7.3.2.11 FEC Redundancy Level . 63
7.3.2.12 Alternative TMGI . 64
7.3.2.13 Transport protocol identification . 64
7.3.2.14 Media type and fmt-list . 64
7.3.3 SDP Examples for FLUTE Session . 65
7.4 OMA Push usage for MBMS Download . 65
7.4.1 Introduction. 65
7.4.2 HTTP registration and deregistration procedure . 66
7.4.3 MBMS Download Delivery Method over OMA push bearers . 66
7.5 FLUTE session setup and control with RTSP . 67
7.5.1 Introduction. 67
7.5.2 SDP handling . 67
7.5.3 RTSP SETUP Method . 67
7.5.4 RTSP PLAY Method . 67
7.5.5 RTSP PAUSE Method . 68
7.5.6 RTSP TEARDOWN Method . 68
7.6 Hybrid Service Offerings for DASH-over-MBMS User Service and Generic Application Service . 68
7.6.1 Introduction . 68
7.6.2 Extension of the deliveryMethod element . 69
7.6.2.1 Broadcast Resource Specific Metadata . 69
7.6.2.2 Redundant Unicast Resource Specific Metadata . 69
7.6.2.2A Supplementary Unicast Resource Specific Metadata . 69
7.6.2.3 Additional Points . 70
7.6.3 Extension of the userServiceDescription element . 70
7.6.3.0 General . 70
7.6.3.1 Identical Content . 70
7.6.3.2 Alternative Content . 70
7.6.3.3 Reference to Unified MPD and other Application Service Documents . 70
7.7 Keep-Updated Service . 71
7.7.1 Registration Procedure . 71
7.7.2 Client Notification about Updates . 72
7.8 Location-specific deliveryMethod . 72
7.9 Partial File handling . 72
7.9.1 General . 72
7.9.2 Partial File Handling with HTTP GET Method . 73
7.9.2.1 Partial-File-Accept Request . 73
7.9.2.2 HTTP Response Format for Partial Files . 73
7.9.2.3 Example Client and Server Implementation for DASH-over-M
...