1、 ETSI TS 181 014 V2.0.0 (2007-11)Technical Specification Telecommunications and Internet converged Services andProtocols for Advanced Networking (TISPAN);Requirements for network transport capabilitiesto support IPTV servicesETSI ETSI TS 181 014 V2.0.0 (2007-11) 2 Reference DTS/TISPAN-01042-NGN-R2 K
2、eywords IP, Broadcast, TV 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
3、the present document 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).
4、In case of dispute, 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 t
5、his and other ETSI 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 au
6、thorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2007. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTMand th
7、e 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 TS 181 014 V2.0.0 (2007-11) 3 Contents Intellectual Property Rights4 Foreword.4
8、 1 Scope 5 2 References 5 2.1 Normative references .5 2.2 Informative references6 3 Definitions and abbreviations.6 3.1 Definitions6 3.2 Abbreviations .7 4 Overview 7 5 IPTV Context Requirements 7 6 Network transport capabilities required .8 6.1 Admission Control .8 6.2 Multicast and Unicast Support
9、 .8 6.3 Security 9 6.4 User data.9 6.5 Accounting .9 6.6 NAT Traversal9 Annex A (informative): Admission Control for Multicast and Unicast.10 Annex B (informative): Other considerations12 Annex C (informative): Existing IPTV specifications.13 History 14 ETSI ETSI TS 181 014 V2.0.0 (2007-11) 4 Intell
10、ectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining 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 Right
11、s (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 (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR
12、 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. Foreword This Technical Specification (TS) has been p
13、roduced by ETSI Technical Committee Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN). ETSI ETSI TS 181 014 V2.0.0 (2007-11) 5 1 Scope The present document specifies the generic network transport capability requirements to support IPTV services, includ
14、ing Broadcast TV and Content on Demand services, based on the characteristics of IPTV services. The present document does not describe the IPTV service per se but the network capabilities that are needed to support these services by specifying the network requirements related to the transport layer,
15、 to support these services, taking terminal capabilities into account. Account is therefore taken of the specifications of IPTV services of other organizations as the DVB. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-s
16、pecific. For a specific reference, subsequent revisions do not apply. Non-specific reference may be made only to a complete document or a part thereof and only in the following cases: - if it is accepted that it will be possible to use all future changes of the referenced document for the purposes o
17、f the referring document; - for informative references. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. For online referenced documents, information sufficient to identify and locate the source shall be pro
18、vided. Preferably, the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the method of access to the referenced document an
19、d the full network address, with the same punctuation and use of upper case and lower case letters. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are
20、 indispensable for the application of the present document. For dated references, only the edition cited applies. For non-specific references, the latest edition of the referenced document (including any amendments) applies. 1 ETSI TS 181 016: “Telecommunications and Internet converged Services and
21、Protocols for Advanced Networking (TISPAN); Service Layer Requirements to integrate NGN services and IPTV“. 2 ETSI TS 102 034: “Digital Video Broadcasting (DVB); Transport of MPEG-2 TS Based DVB Services over IP Based Networks“. 3 ITU-T Recommendation Y.2011: “General principles and general referenc
22、e model for Next Generation Networks“. 4 ETSI TS 102 005: “Digital Video Broadcasting (DVB);Specification for the use of Video and Audio Coding in DVB services delivered directly over IP protocols“. 5 ETSI TS 187 001: “Telecommunications and Internet converged Services and Protocols for Advanced Net
23、working (TISPAN); NGN SECurity (SEC); Requirements“. ETSI ETSI TS 181 014 V2.0.0 (2007-11) 6 2.2 Informative references 6 ETSI TR 102 033: “Digital Video Broadcasting (DVB); Architectural framework for the delivery of DVB-services over IP-based networks“. 3 Definitions and abbreviations 3.1 Definiti
24、ons For the purposes of the present document, the following definitions apply: Broadcast TV: television programming transmitted and intended for reception by anyone within range of the transmitter or lawfully connected to a cable distribution system but where the consumer has no control over the con
25、tent or timing of what he receives, apart from the ability to select a particular channel NOTE: It is sometimes referred to as “Linear TV“. Consumer: domain where the IPTV services are consumed NOTE: The consumer domain may consist of a single terminal used directly for service consumption or may be
26、 a complex network of terminals and related devices, including consumer operated mobile devices. The domain itself may also be a mobile end device. In this case, the delivery system of a transport provider would be a Wireless Wide Area Network (WWAN). A single consumer domain may be connected via tw
27、o or more networks to a number of service providers obtaining content from multiple content providers. Consumer Network: network owned and operated by an end-user relying on the services of a transport provider for external connectivity; in this context, the definition includes home networks, wirele
28、ss “hot spots“, hotel networks, etc. Content on Demand (CoD): Users can select their required content with the assistance of the Electronic Programme Guide (EPG) at the user preferred time NOTE: The content is then transmitted uniquely (unicast) to that consumer who can usually use VCR-like function
29、alities (for example, fast-forward, rewind or pause) to control their viewing of the content. A special form of Content on Demand (CoD) is Video on Demand (VoD). Content Provider: entity that owns or is licensed to sell content or content assets Electronic Programme Guide (EPG): assistance tool whic
30、h helps users to locate the content they want and to facilitate the selection of IPTV services for watching, recording, etc. IPTV Service Provider: entity that offers IPTV services to the Customers making use of the services capabilities provided by the NGN Service Provider Service Provider: entity
31、providing a service to the subscriber NOTE: Different types of service providers may be relevant for television services on IP, see IPTV Service Provider and NGN Service Provider. Transport Provider: entity connecting consumers and Service Providers NOTE: The delivery system usually is composed of a
32、ccess networks and core or backbone networks, which may use a variety of network technologies and be owned by a number of different operators. VCR functions: common functionalities of a video cassette recorder, such as select/cancel, start, stop, pause (with or without freeze frame), fast forward, r
33、everse, scan forward or reverse (both with or without image), and setting and resetting memory marks ETSI ETSI TS 181 014 V2.0.0 (2007-11) 7 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: CoD Content on Demand DVB Digital Video Broadcasting EPG Electro
34、nic Programme Guide (see also IPG) HD High Definition (TV) IP Internet Protocol IPG Interactive Programme Guide (see also EPG) IPR Intellectual Property Rights IPTV Internet Protocol Television NGN Next Generation Network QoS Quality of Service RTSP Real-Time Streaming Protocol SD Standard Definitio
35、n (TV) TV Television UE User Equipment VCR Video Cassette Recorder WWAN Wireless Wide Area Network 4 Overview The present document describes the requirements on the TISPAN NGN transport layer to support IPTV services irrespective of the service control mechanism employed. Several standards on IPTV a
36、re evolving in other standards organizations, including DVB, ATIS IIF and OMA (see annex C for more information). The ETSI TISPAN architecture shall provide the necessary transport capabilities to support the requirements of the main ongoing standards on IPTV. The present document notes the ongoing
37、developments in this area as well as existing deployments and describes the requirements for the following network transport capabilities: Admission control. Support of Multicast and Unicast. Security. User Data. Accounting. NAT traversal. Resource management. The present document is complimentary t
38、o TS 181 016 1 that contains several examples of relevant IPTV services. 5 IPTV Context Requirements Many of the following requirements are largely derived from the ATIS IIF document, as generic requirements relevant for the IPTV context. In these, the word “architecture“ has been replaced by “solut
39、ion“, since they are not so much functional requirements but rather related to the service that IPTV is to provide to the user. Other requirements specific to the present document have also been included. 5.1 The IPTV solution shall allow for two-way communications between the Service Provider and a
40、 UE within the consumer network. 5.2 The IPTV solution shall support services delivered to a consumer network from one or more service providers over an IP transport stream. ETSI ETSI TS 181 014 V2.0.0 (2007-11) 8 5.3 The IPTV solution shall allow the delivery of multiple COD content profiles e.g. H
41、D, SD and multichannel audio to the consumer. 5.4 The IPTV solution shall be capable of supporting multiple IP transport streams providing services from one or more service providers to a single consumer network. 5.5 The IPTV solution may support the delivery of multiple services over common managed
42、 IP transport with a controllable IP Quality of Service (QoS). 5.6 The IPTV solution shall support the individual addressability of devices acting as UEs within the consumer network. 5.7 The IPTV solution shall include a mechanism for user provisioning, profiling and registration. 5.8 The IPTV solut
43、ion shall provide a mechanism to protect privacy of the consumer. 5.9 The IPTV solution shall ensure that the storage and management of user related data is in accordance with the relevant national regulations. 5.10 The IPTV solution shall make efficient use of network transport capabilities. 6 Netw
44、ork transport capabilities required 6.1 Admission Control The TISPAN NGN transport stratum must offer an Admission Control solution for admission of IPTV services over the Access and Core network resources from the consumer network to the service source In particular, the Admission Control solution
45、must be: accurate (i.e. admits the right multicast or unicast sessions on the right resources); bandwidth efficient (i.e. only rejects multicast or unicast sessions which are indeed in excess of the current network capacity and accept as many multicast or unicast sessions as possible that can indeed
46、 fit in the current network capacity); reactive (i.e. adjust fast to changes in network conditions such as failure or dynamic rerouting and adjust quickly to changes in shared resource usage such as a UE switching between a multicast and unicast IPTV services); able to handle resources that can be u
47、sed by either multicast or unicast (e.g. it would not be feasible to partition the available access line bandwidth between unicast only and multicast only IPTV services); and able to handle resources shared by other non IPTV services (e.g. internet data and VoIP and other communication services). 6.
48、2 Multicast and Unicast Support The use of Multicast improves network resource utilization and QoS in large-scale IPTV deployments. . Therefore the access and core networks should have multicast transport and routing capability. The related multicast protocol, multicast management and control should
49、 be supported in access and core networks. IPTV solutions shall be able to make use of the underlying multicast facility if it is available (e.g. streaming servers and other service layer elements). Content delivery of Multicast and Unicast streams types are: Multicast contents delivery: - Streaming type. ETSI ETSI TS 181 014 V2.0.0 (2007-11) 9 Unicast contents delivery: - Streaming type. - Download type. 6.3 Security The security requirements for IPTV are described in clause 4.13 of TS 187 001 5. 6.4 User data It shall be possibl
