1、 ETSI TR 102 469 V1.1.1 (2006-05)Technical Report Digital Video Broadcasting (DVB);IP Datacast over DVB-H: ArchitectureEuropean Broadcasting Union Union Europenne de Radio-Tlvision EBUUER ETSI ETSI TR 102 469 V1.1.1 (2006-05) 2 Reference DTR/JTC-DVB-185 Keywords broadcasting, data, digital, DVB, IP,
2、 video 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 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Individual copies of the present documen
3、t can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute,
4、 the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. 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
5、documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written
6、 permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2006. European Broadcasting Union 2006. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members.
7、 TIPHONTMand the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TR 102 469 V1.1.1 (2006-05) 3 Contents Intellectual Property Rig
8、hts4 Foreword.4 Introduction 4 1 Scope 5 2 References 5 3 Definitions and abbreviations.5 3.1 Definitions5 3.2 Abbreviations .7 4 Functional Architecture8 4.1 Architectural Model .8 4.2 Functional Entities8 4.3 Reference Points.9 4.4 Air Interface .10 5 End-to-end operations 11 5.1 Service configura
9、tion .11 5.1.1 Logical Entities and Reference Points 11 5.1.2 Message Flow .12 5.2 Electronic Service Guide14 5.2.1 Logical Entities and Reference Points 14 5.2.2 Instantiation Scenarios15 5.2.2.1 Distributed ESG Provisioning.16 5.2.2.2 Centralized ESG Provisioning 16 5.2.3 ESG bootstrapping17 5.2.3
10、.1 Operational Considerations.18 5.2.3.2 ESG Bootstrap Procedure .18 5.2.4 Message Flow .19 5.2.5 Operational Considerations.20 5.3 Content Delivery 21 5.3.1 Stream Delivery21 5.3.1.1 Logical Entities and Reference Points.21 5.3.1.2 Message Flow .22 5.3.2 File Delivery .23 5.3.2.1 Logical Entities a
11、nd Reference Points.23 5.3.2.2 Message Flow .24 5.3.2.3 Operational Considerations.26 5.4 Service Purchase and Protection 26 5.4.1 Hierarchical Service Protection Model.26 5.4.2 Logical Entities and Reference Points 27 5.4.3 Message Flow .29 6 Protocol Stack 31 7 Map of IP Datacast specifications33
12、7.1 CBMS-1 .33 7.2 CBMS-2 .33 7.3 CBMS-3 .34 7.4 CBMS-4 .35 7.5 CBMS-5 .36 7.6 CBMS-6 .36 7.7 CBMS-7 .37 History 38 ETSI ETSI TR 102 469 V1.1.1 (2006-05) 4 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information per
13、taining to these essential IPRs, if any, is 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 Secre
14、tariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, 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
15、 the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Report (TR) has been produced by Joint Technical Committee (JTC) Broadcast of the European Broadcasting Union (EBU), Comit Europen de Normalisation ELECtrotechnique (C
16、ENELEC) and the European Telecommunications Standards Institute (ETSI). NOTE: The EBU/ETSI JTC Broadcast was established in 1990 to co-ordinate the drafting of standards in the specific field of broadcasting and related fields. Since 1995 the JTC Broadcast became a tripartite body by including in th
17、e Memorandum of Understanding also CENELEC, which is responsible for the standardization of radio and television receivers. The EBU is a professional association of broadcasting organizations whose work includes the co-ordination of its members activities in the technical, legal, programme-making an
18、d programme-exchange domains. The EBU has active members in about 60 countries in the European broadcasting area; its headquarters is in Geneva. European Broadcasting Union CH-1218 GRAND SACONNEX (Geneva) Switzerland Tel: +41 22 717 21 11 Fax: +41 22 717 24 81 Founded in September 1993, the DVB Proj
19、ect is a market-led consortium of public and private sector organizations in the television industry. Its aim is to establish the framework for the introduction of MPEG-2 based digital television services. Now comprising over 200 organizations from more than 25 countries around the world, DVB foster
20、s market-led systems, which meet the real needs, and economic circumstances, of the consumer electronics and the broadcast industry. Introduction IP Datacast over DVB-H is an end-to-end broadcast system for delivery of any types of digital content and services using IP-based mechanisms optimized for
21、 devices with limitations on computational resources and battery. An inherent part of the IPDC system is that it comprises of a unidirectional DVB broadcast path that may be combined with a bi-directional mobile/cellular interactivity path. IPDC is thus a platform that can be used for enabling the c
22、onvergence of services from broadcast/media and telecommunications domains (e.g. mobile / cellular). ETSI ETSI TR 102 469 V1.1.1 (2006-05) 5 1 Scope The present document defines the reference architecture for services delivered by IP Datacast 7 over DVB-H 1. The reference architecture is provided to
23、 illustrate the way the components in IP Datacast over DVB-H work together. 2 References For the purposes of this Technical Report (TR) the following references apply: 1 ETSI EN 302 304: “Digital Video Broadcasting (DVB); Transmission System for Handheld Terminals (DVB-H)“. 2 ETSI TR 101 516: “Digit
24、al cellular telecommunications system (Phase 2+); Abbreviations and acronyms (GSM 01.04)“. NOTE: http:/www.3gpp.org 3 ITU-T Recommendation I.112: “Vocabulary of terms for ISDNs“. NOTE: http:/www.itu.org 4 IETF RFC 1208: “A Glossary of Network Terms“. 5 ETSI EN 300 468: “Digital Video Broadcasting (D
25、VB); Specification for Service Information (SI) in DVB systems“. 6 ETSI EN 301 192: “Digital Video Broadcasting (DVB); DVB specification for data broadcasting“. 7 ETSI TS 102 468: “Digital Video Broadcasting (DVB); IP Datacast over DVB-H: Set of Specifications for Phase 1“. 8 ETSI TR 102 473: “Digit
26、al Video Broadcasting (DVB); IP Datacast over DVB-H: Use Cases and Services“. 9 ETSI TS 102 471: “Digital Video Broadcasting (DVB); IP Datacast over DVB-H: Electronic Service Guide (ESG)“. 10 ETSI TS 102 472: “Digital Video Broadcasting (DVB); IP Datacast over DVB-H: Content Delivery Protocols“. 11
27、ETSI TS 102 470: “Digital Video Broadcasting (DVB); IP Datacast over DVB-H: Program Specific Information (PSI)/Service Information (SI)“. 12 ETSI TS 102 474: “Digital Video Broadcasting (DVB); IP Datacast over DVB-H: Service Purchase and Protection“. 13 ETSI TS 102 005: “Digital Video Broadcasting (
28、DVB); Specification for the use of Video and Audio Coding in DVB services delivered directly over IP protocols“. 14 IETF RFC 2326: “Real Time Streaming Protocol (RTSP)“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions give
29、n in 2, 3, 11 and the following apply: bearer: information transmission path of defined capacity, delay and bit error rate, etc. ETSI ETSI TR 102 469 V1.1.1 (2006-05) 6 bearer network: network used to carry the messages of a transport-layer protocol between physical devices broadcast: unidirectional
30、 distribution to all receivers delivery system: physical medium by which one or more multiplexes are transmitted NOTE: E.g. satellite system, wideband coaxial cable, fibre optics, terrestrial channel of one emitting point 11. DVB network: collection of MPEG-2 Transport Streams, each carrying a multi
31、plex, and transmitted on a single delivery system NOTE: DVB network is identified by network_id, TS 102 470 11. ESG fragment: fragment of ESG data delivered in the ESG stream and referred to by a fragment reference in the encapsulation structure NOTE: Namely an ESG Fragment can be according to TS 10
32、2 471 9 an ESG XML Fragment, ESG Auxiliary Data or Private Auxiliary data. ESG fragment container: a structure to group one or more ESG Fragments into one data object for transport purposes interface: common boundary between two associated systems (source: TR 101 516 2, ITU-T Recommendation I.112 3)
33、. IP datacast baseline: the minimum core protocol profile an IPDC DVB-T/H Receiver may expect to be available on IPDC DVB-T/H Bearer (data transmission baseband) and the IPDC DVB-T/H Network is expected to make available on the IPDC DVB-T/H Bearer, TS 102 470 11 IPDC DVB-T/H bearer: link and physica
34、l layers into which IP platform is encapsulated 11 IPDC DVB-T/H receiver: equipment or system that acquires IP Datacast based services provided over the IP Datacast Baseline on DVB-H 11 IPDC DVB-T/H terminal: equipment that constitutes a collection of one or more endpoints for IP Datacast services a
35、nd that has implemented the full (broadcast) downstream end functionality for one or more IP Datacast services NOTE: It includes an IPDC DVB-T/H receiver. It may include an interaction channel. IP flow: stream of IP datagrams each sharing the same IP source and destination address NOTE: An IP flow i
36、s identified within an IP platform by its source and destination addresses. IP flows on different IP platforms may have the same source/destination addresses, but are considered different IP flows. IP flow may be delivered over one or more IP streams. IP platform: set of IP flows managed by an organ
37、ization NOTE: The IP platform represents a harmonized IP address space that has no address collisions. An IP platform may span several Transport Streams within one or more DVB networks. Several IP platforms may co-exist in the same Transport Stream. IP platform is identified by platform_id, TS 102 4
38、70 11. IP stream: data stream delivering exactly one MPE encoded IP datagram stream NOTE: IP stream is identified by transport_stream_id, original_network_id, service_id, component_tag and IP source/destination addresses, TS 102 470 11. protocol: formal set of procedures that are adopted to ensure c
39、ommunication between two or more functions within the same layer of a hierarchy of functions, (source: ITU-T Recommendation I.112 3) Reference point: conceptual point at the conjunction of two non-overlapping functional groups NOTE: It consists of none or any number of interfaces of any kind, (sourc
40、e: ITU-T Recommendation I.112 3). Service Access Point (SAP): point at which the services of an OSI layer are made available to the next higher layer NOTE: The SAP is named according to the layer providing the services: e.g. Transport services are provided at a Transport SAP (TSAP) at the top of the
41、 Transport Layer, RFC 1208 4. ETSI ETSI TR 102 469 V1.1.1 (2006-05) 7 Interface, Reference Point and Protocol differentiated at a glance: A reference point is just a label between two groups of logical entities in the overall architecture. Function level architecture (like the one for ESG in the pre
42、sent document) takes a step to details and maps functional elements of a given function to the overall architecture. The relation between two functional entities is called interface and shall be specified. One or more protocols may be part of the specification. 3.2 Abbreviations For the purposes of
43、the present document, the following abbreviations apply: ALC Asynchronous Layered Coding BAT Bouquet Association Table CBMS Convergence of Broadcast and Mobile Services DVB Digital Video Broadcasting DVB-H DVB-Handheld ECM Entitlement Control Message EDGE Enhanced Data rates for Global Evolution EMM
44、 Entitlement Management Message ESG Electronic Service Guide ESGC ESG Container FEC Forward Error Correction FFS For Further Study FLUTE File DeLivery over Unidirectional Transport GPRS General Packet Radio Service GPS Global Positioning SystemGSM Global System for Mobile Communication HTTP HyperTex
45、t Transfer Protocol INT IP/MAC Notification Table IP Internet Protocol IPDC IP DataCast ISO International Standards Organisation KMM Key Management Message KMS Key Management System KMSA Key Management System Agent KSM Key Stream Message LCT Layered Coding Transport MMS Multimedia Message Service MP
46、E Multi-Protocol Encapsulation NIT Network Information Table OMA Open Mobile Association OSI Open Systems Interconnection PAT Program Association Table PEK Programme Encryption Key PMT Program Map Table PSI Program Specific Information RO Rights Object RTP Real-Time Protocol RTSP Real Time Streaming
47、 Protocol SAP Service Access Point SDP Session Description Protocol SEK Service Encryption Key SI Service Information SMS Short Message Service TCP Transmission Control Protocol TEK Traffic Encryption Key TS Transport Stream UDP User Datagram Protocol ETSI ETSI TR 102 469 V1.1.1 (2006-05) 8 UMTS Uni
48、versal Mobile Telecommunication System WAP Wireless Application Protocol XML eXtended Markup Language 4 Functional Architecture The functional architecture is a general technical framework for the system to be specified. It describes the current best understanding of the basic functional elements of
49、 the system with an assignment to key system functionalities. The architecture is intended to leave room for technical implementation alternatives. The links between the elements illustrate the possible exchange of information, operational parameters, delivered services, etc. 4.1 Architectural Model IP Datacast over DVB-H involves a number of functional entities over a set of reference points. Figure 1 shows the functional entities and their relationships. The following clauses provide additional in
