1、 International Telecommunication Union ITU-T J.702TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (10/2008) SERIES J: CABLE NETWORKS AND TRANSMISSION OF TELEVISION, SOUND PROGRAMME AND OTHER MULTIMEDIA SIGNALS Secondary distribution of IPTV services Enablement of current terminal devices for the sup
2、port of IPTV services Recommendation ITU-T J.702 Rec. ITU-T J.702 (10/2008) i Recommendation ITU-T J.702 Enablement of current terminal devices for the support of IPTV services Summary Recommendation ITU-T J.702 describes an IPTV terminal device (IPTV TD) that enables a migration path for the suppor
3、t of basic IPTV services, for current terminal devices used for other TV delivery services. This Recommendation identifies architectures and functions needed for the IPTV TD to support basic IPTV services, and is intended to meet immediate demands of current TV delivery services to rapidly deploy ba
4、sic IPTV services. Source Recommendation ITU-T J.702 was approved on 29 October 2008 by ITU-T Study Group 9 (2005-2008) under Recommendation ITU-T A.8 procedures. ii Rec. ITU-T J.702 (10/2008) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the fi
5、eld of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardi
6、zing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covere
7、d by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicat
8、e both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g., interoperability or applicability) and compliance with the Recommendation is achieved w
9、hen all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPE
10、RTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserte
11、d by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned tha
12、t this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2010 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec.
13、 ITU-T J.702 (10/2008) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 2 3.1 Terms defined elsewhere 2 3.2 Terms defined in this Recommendation . 3 4 Abbreviations 4 5 Conventions 6 6 Basic services . 7 6.1 Content delivery service . 7 6.2 Interactive services . 7 6.3 Public interest servi
14、ces . 8 7 Functional requirements . 8 7.1 Network attachment 8 7.2 Service discovery 9 7.3 Service navigation 9 7.4 Provisioning and management . 10 7.5 IP-based command and control 11 7.6 Security . 11 7.7 Video content 13 7.8 Audio content . 13 7.9 Codecs 14 7.10 Diagnostics . 14 8 Network archite
15、ctures for IPTV TD . 14 9 IPTV terminal device functional architecture . 15 9.1 General functional architecture block diagram 15 9.2 Interfaces 20 9.3 IPTV terminal software architecture 22 10 IPTV terminal device interfaces . 23 10.1 Logical interfaces . 23 10.2 Physical interfaces 23 11 RG (reside
16、ntial gateway) 23 12 Solution toolbox and profiles 24 Annex A Baseline and extended functionality 25 Annex B Codec selections 26 Appendix I Examples of codecs 27 Appendix II VBI data processing 28 iv Rec. ITU-T J.702 (10/2008) Page Appendix III Service flow charts of interactions between application
17、s, service platforms and terminal middleware 29 III.1 Flow of upgrade 29 III.2 Flow of boot-strap and initialization 29 III.3 Flow of service authentication 30 III.4 Flow of living broadcast service . 30 III.5 Flow of time-shift service . 31 III.6 Flow of VoD service 32 III.7 Flow of log upload 33 I
18、II.8 Flow of status report . 34 III.9 Flow of configuration . 34 Appendix IV Service information . 35 Appendix V Service discovery schemes . 36 Bibliography. 38 Rec. ITU-T J.702 (10/2008) 1 Recommendation ITU-T J.702 Enablement of current terminal devices for the support of IPTV services 1 Scope Thi
19、s Recommendation describes an IPTV terminal device (IPTV TD) that enables a migration path for the support of basic IPTV services, for current terminal devices used for other TV delivery services. This Recommendation identifies architectures and functions needed for the IPTV TD to support basic IPTV
20、 services, and is intended to meet immediate demands of current TV delivery services to rapidly deploy basic IPTV services. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At
21、 the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed b
22、elow. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T F.902 Recommendation ITU-T F.902 (1995), Interactive services design guidelines.
23、 ITU-T G.1080 Recommendation ITU-T G.1080 (2008), Quality of experience requirements for IPTV services. ITU-T H.750 Recommendation ITU-T H.750 (2008), High-level specification of metadata for IPTV services. ITU-T J.293 Recommendation ITU-T J.293 (2008), Component definition and interface specificati
24、on for the next generation set-top box. ITU-T J.700 Recommendation ITU-T J.700 (2007), IPTV service requirements and framework for secondary distribution. ITU-T J.701 Recommendation ITU-T J.701 (2008), Broadcast-centric IPTV terminal middleware. ITU-T X.1191 Recommendation ITU-T X.1191 (2009), Funct
25、ional requirements and architecture for IPTV security aspects. ITU-T Y.1901 Recommendation ITU-T Y.1901 (2009), Requirements for the support of IPTV services. ITU-T Y.1910 Recommendation ITU-T Y.1910 (2008), IPTV functional architecture. ITU-T Y.2014 Recommendation ITU-T Y.2014 (2008), Network attac
26、hment control functions in next generation networks. ITU-R BT.1361 Recommendation ITU-R BT.1361 (1998), Worldwide unified colorimetry and related characteristics of future television and imaging systems. ITU-R BT.2052 Report ITU-R BT.2052 (2005), Protection of end-users privacy in interactive broadc
27、asting systems. BBF TR 069 Broadband Forum TR-069 (2004), CPE WAN Management Protocol. BBF TR 135 Broadband Forum TR-135 (2007), Data Model for a TR-069 Enabled STB. 2 Rec. ITU-T J.702 (10/2008) ETSI TS 102 034 ETSI TS 102 034 (2005), Digital Video Broadcasting (DVB); Transport of MPEG-2 Based DVB S
28、ervices over IP Based Networks. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 access control b-ITU-T X.800: The prevention of unauthorized use of a resource, including the prevention of use of a resource in an unauthorized manner. 3.1
29、.2 accessibility feature ITU-T Y.1901: An additional content component that is intended to assist people hindered in their ability to perceive an aspect of the main content. Examples: captions for the hard of hearing, subtitles in various languages, sign-language interpretation video and descriptive
30、 audio. 3.1.3 application b-ITU-T Y.101: A structured set of capabilities, which provide value-added functionality supported by one or more services. 3.1.4 authentication b-ITU-T X.800: See data origin authentication and peer-entity authentication. 3.1.5 authorization b-ITU-T X.800: The granting of
31、rights, which includes the granting of access based on access rights. 3.1.6 broadcast b-ITU-T M.60: One-way transmission from one point to two or more other points. 3.1.7 data origin authentication b-ITU-T X.800: The corroboration that the source of data received is as claimed. 3.1.8 delivery networ
32、k gateway (DNG) b-ATIS-0800002: A device implementing the DNGF. NOTE DNG also is commonly referred to as the residential gateway (RG). 3.1.9 end-user (adapted from b-ITU-T M.3050.1): The actual user of the products or services. NOTE The end-user consumes the product or service. Further, an end-user
33、may or may not be responsible for concluding contracts for the services subscribed to and for paying for these services (i.e., an end-user may or may not be a subscriber). 3.1.10 functional architecture b-ITU-T Y.2012: A set of functional entities and the reference points between them used to descri
34、be the structure of an NGN. These functional entities are separated by reference points, and thus, they define the distribution of functions. NOTE 1 The functional entities can be used to describe a set of reference configurations. These reference configurations identify which reference points are v
35、isible at the boundaries of equipment implementations and between administrative domains. NOTE 2 This definition is taken from b-ITU-T Y.2012 and therefore relates to NGN. However, it is also valid for other networks, e.g., networks supporting IPTV. 3.1.11 functional entity b-ITU-T Y.2012: An entity
36、 that comprises an indivisible set of specific functions. Functional entities are logical concepts, while groupings of functional entities are used to describe practical, physical implementations. 3.1.12 key b-ITU-T X.800: A sequence of symbols that controls the operations of encipherment and deciph
37、erment. 3.1.13 key management b-ITU-T X.800: The generation, storage, distribution, deletion, archiving and application of keys in accordance with a Security Policy. Rec. ITU-T J.702 (10/2008) 3 3.1.14 peer-entity authentication b-ITU-T X.800: The corroboration that a peer entity in an association i
38、s the one claimed. 3.1.15 privacy b-ITU-T X.800: The right of individuals to control or influence what information related to them may be collected and stored and by whom and to whom that information may be disclosed. 3.1.16 provisioning b-ITU-T M.2301: The installation, assignment and commissioning
39、 (including bringing-into-service testing) of network resources. 3.1.17 security policy b-ITU-T X.800: The set of criteria for the provision of security services. 3.1.18 service provider b-ITU-T M.1400: A general reference to an operator that provides telecommunication services to customers and othe
40、r users either on a tariff or contract basis. A service provider may or may not operate a network. A service provider may or may not be a customer of another service provider. 3.1.19 subscriber b-ITU-T M.3050.1: The subscriber is responsible for concluding contracts for the services subscribed to an
41、d for paying for these services. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 content protection: Ensuring that end-users can only use the content they have already acquired in accordance with the rights that they have been granted by the rights hol
42、der. Content protection includes protecting contents from illegal copying and distribution, interception, tampering, unauthorized use, etc. 3.2.2 content provider: The entity that owns or is licensed to sell content or content assets. 3.2.3 content tracing: A process to enable the identification of
43、the (arbitrary) origin of content, and/or the responsible party (e.g., the end-user), to facilitate subsequent investigation in the event of unauthorized use of content, for example, content copying or redistribution. NOTE Content tracing information may be attached to content either as metadata, or
44、 as a forensic watermark. 3.2.4 delivery network gateway functions (DNGF): Set of functions that mediate between the network and service provider domains and the IPTV terminal function (ITF). NOTE A device implementing the DNGF is commonly referred to as the residential gateway (RG) or delivery netw
45、ork gateway (DNG). 3.2.5 entitlements: Refer to authorization level(s) including conditional access information that a subscriber can use to access certain IPTV services in his/her IPTV TD. 3.2.6 IPTV TD: A terminal device which has ITF functionality, e.g., a set-top box (STB). 3.2.7 IPTV terminal f
46、unction (ITF): The client-side function(s) associated with a) receiving and responding to network control channel messages regarding session set-up, maintenance, and tear-down, and b) receiving the content of an IP transport from the network and rendering. 3.2.8 linear TV: A television service in wh
47、ich a continuous stream flows in real time from the service provider to the terminal device and where the user cannot control the temporal order in which contents are viewed. 3.2.9 metadata: Structured, encoded data that describe characteristics of information-bearing entities to aid in the identifi
48、cation, discovery, assessment, and management of the described entities. NOTE EPG metadata has many applications and may vary in depth from merely identifying the content package title or information to populate an EPG to providing a complete index of different scenes in a movie or providing busines
49、s rules detailing how the content package may be displayed, copied, or sold. 4 Rec. ITU-T J.702 (10/2008) 3.2.10 rights: Refer to the ability to perform a pre-defined set of utilization functions on a content item. These utilization functions include the permissions (e.g., to view/hear, copy, modify, record, excerpt, sample, keep for a certain period, distribute), constraints (e.g., play/view/hear multiple times, play/view/hear certain number of hours) and
